CN110528822B - Cement floor construction method - Google Patents
Cement floor construction method Download PDFInfo
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- CN110528822B CN110528822B CN201910791011.9A CN201910791011A CN110528822B CN 110528822 B CN110528822 B CN 110528822B CN 201910791011 A CN201910791011 A CN 201910791011A CN 110528822 B CN110528822 B CN 110528822B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
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Abstract
The invention relates to the field of building construction, and provides a cement ground construction method aiming at the problem that the ground is easy to crack due to hollowing, which comprises the following steps: s1, performing base layer processing; s2, wetting the base layer; s3, brushing a plain cement paste layer; s4, paving a fine aggregate concrete cushion layer; s5, paving a cement bonding layer; s6, laying ash cakes; s7, paving a surface layer; s8, first wiping and pressing; s9, second smearing; s10, performing third-time smearing; and S11, curing and forming. Through laying plain cement layer between basic unit and bed course, and pour the cement tie coat between bed course and surface course, be favorable to strengthening the adhesion force between basic unit and the bed course, still be favorable to strengthening the adhesion force between bed course and the surface course, make basic unit and bed course and the surface course be difficult to the separation more, make ground be difficult to appear hollowing phenomenon more in the use, be favorable to strengthening the compressive strength on ground, make ground be difficult to the fracture when receiving the heavy object to pound.
Description
Technical Field
The invention relates to the field of building construction, in particular to a cement ground construction method.
Background
The ground is the pavement of the ground surface inside and around the building, and is also the pavement of the floor surface. In many factory buildings, garages and dining halls, for construction convenience, cement ground is generally adopted.
However, due to various operation problems in the construction process, the bonding force between the cushion layer and the surface layer of the ground is easy to be weak, so that the bonding interface between the cushion layer and the surface layer is easy to separate, the ground is easy to have a hollowing phenomenon due to the separation of the cushion layer and the surface layer in the use process, the compressive strength of the ground is easy to be influenced, the ground is easy to crack when being hit by a heavy object, and therefore, the improvement space is still provided. Especially, various large-scale equipment is placed in a factory building, heavy objects can be carried frequently, and the compressive strength of the ground is more important.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a cement ground construction method which has the advantage of reducing the hollowing phenomenon of the ground so that the ground is not easy to crack.
In order to achieve the purpose, the invention provides the following technical scheme:
a cement ground construction method comprises the following steps:
s1, base layer processing: cleaning a base layer;
s2, wetting the base layer: sprinkling water on the base layer for wetting and draining accumulated water on the surface of the base layer;
s3, plastering a plain cement paste layer: painting a layer of plain cement paste with the ratio of cement to water of 1:0.4-0.45 on the surface of the wetted base layer to form a plain cement paste layer;
s4, paving a fine aggregate concrete cushion layer: paving plain cement paste, and pouring a fine aggregate concrete cushion layer on the plain cement paste layer to form a fine aggregate concrete cushion layer;
s5, laying a cement bonding layer: before the fine aggregate concrete is solidified, pouring viscous cement on the fine aggregate concrete cushion layer to form a cement bonding layer;
s6, laying ash cakes: according to the marking line of a design drawing, uniformly laying gray cakes on a cement bonding layer before viscous cement is solidified, and partially embedding the gray cakes into the cement bonding layer for fixing;
s7, paving a surface layer: before the viscous cement is solidified, pouring cement mortar on the cement bonding layer to form a surface layer;
s8, first-pass wiping: before the initial setting of cement mortar, smearing the foot prints on the surface of the plane layer;
s9, second-time smearing: when cement mortar is condensed to the state that a person steps on the surface layer and has foot prints but does not sink, the surface of the surface layer is smeared and pressed to be flat and bright;
s10, third-time smearing: before the cement mortar is finally set and when no leveling mark is left in the leveling process of the leveling tool, leveling the surface layer until the second leveling line is flattened;
and S11, curing and forming.
By adopting the technical scheme, the plain cement layer is laid between the base layer and the cushion layer, and the cement bonding layer is poured between the cushion layer and the surface layer, so that the bonding force between the base layer and the cushion layer is favorably enhanced, and the bonding force between the cushion layer and the surface layer is favorably enhanced, so that the base layer and the cushion layer as well as the cushion layer and the surface layer are more difficult to separate, the ground is further less prone to hollowing in the use process, the compressive strength of the ground is favorably enhanced, and the ground is more difficult to crack when being hit by a heavy object;
the base layer is cleaned up, so that the plain cement paste can be favorably adhered to the base layer better, the adhesion force between the plain cement paste and the base layer is not easily influenced by the floating soil and the dust on the surface of the base layer, the adhesion strength between the base layer and the plain cement paste can be favorably enhanced, the base layer and the plain cement paste layer can be more difficultly separated, the ground is further less prone to hollowing, the compressive strength of the ground can be favorably enhanced, and the ground is less prone to cracking when being hit by a heavy object;
the base layer is wetted firstly, and then the plain cement layer is painted on the wetted base layer, so that the bonding strength of the plain cement paste and the base layer is enhanced, the plain cement paste is more difficult to separate from the base layer, the floor is less prone to hollowing, the compressive strength of the floor is further enhanced, and the floor is less prone to cracking when being hit by a heavy object; meanwhile, the condition of ground cracking caused by shrinkage of the base layer is reduced;
the cement bonding layer and the surface layer are uniformly paved with the ash cakes, so that the compressive strength of the ground is enhanced, and the ground is less prone to cracking when being hit by a heavy object;
through wiping the surface course many times, be favorable to improving the roughness on surface course surface, simultaneously, still be favorable to improving the closely knit degree of surface course for the compressive strength reinforcing of surface course, thereby make ground be difficult to the fracture when receiving the heavy object to pound.
The invention is further configured to: in the step S6, the distance between the adjacent ash cakes is 1.5m-2 m.
By adopting the technical scheme, the distance between the adjacent ash cakes is controlled to be 1.5-2 m, so that the ash cakes can better provide supporting force for the surface layer, the compressive strength of the ground can be enhanced, and the ground is less prone to cracking when being hit by a heavy object.
The invention is further configured to: the thickness of the fine stone concrete layer is 4-5cm, the thickness of the cement bonding layer is 5-10cm, and the thickness of the surface layer is 30-35 cm.
By adopting the technical scheme, the bearing capacity of each layer of the ground is favorably enhanced by controlling the thickness of the fine stone concrete layer, the cement bonding layer and the surface layer, so that the compressive capacity of the ground is enhanced, and the ground is less prone to cracking when being hit by a heavy object.
The invention is further configured to: in the step S11, after the third time of smearing for 10-12h, covering the surface layer by using a covering material, and sprinkling water for 3-4 times per day to keep the surface layer moist, wherein the curing temperature is controlled to be 25-30 ℃, and the curing time is controlled to be 28-30 days.
By adopting the technical scheme, the curing temperature and the curing time are controlled, so that cement mortar for forming the surface layer is better solidified and formed, the cement mortar is not easy to crack in the solidification process, and the ground is not easy to crack in the forming process.
The invention is further configured to: the viscous cement comprises the following components in parts by mass:
20-25 parts of Portland cement;
15-18 parts of water;
75-80 parts of sand;
95-100 parts of stone;
5-10 parts of ethylene-vinyl acetate copolymer;
3-5 parts of a Hylocereus undulatus extract;
1-2 parts of moringa seed extract.
By adopting the technical scheme, the ethylene-vinyl acetate copolymer is added, so that the viscosity of the viscous cement is favorably enhanced, and the viscous cement is more easily and firmly bonded with the cushion layer and the surface layer, so that the bonding interface of the cement bonding layer, the cushion layer and the surface layer is more difficult to separate, the ground is further less prone to hollowing, the compressive strength of the ground is more difficult to influence, and the ground is further less prone to cracking when being hit by a heavy object;
meanwhile, the ethylene-vinyl acetate copolymer is also beneficial to enhancing the compatibility of each component in the viscous cement, so that each component in the viscous cement is easier to mix and disperse uniformly, and the stability of the viscous cement is improved;
through adopting fruit extract and the cooperation of peppery wood seed extract and ethylene-vinyl acetate copolymer of flowing through the wind, still be favorable to strengthening the cohesive strength and the permeability of stickness cement, make stickness cement more easily permeate to in bed course and the surface course, thereby make the cement tie coat bond firmly with bed course and surface course more easily, make cement tie coat and bed course and surface course be difficult to separate more, and then make ground be difficult to appear the hollowing phenomenon in the use more, make the compressive strength on ground be difficult to receive the influence more, make ground be difficult to the fracture when receiving to pound the heavy object.
The invention is further configured to: the viscous cement also comprises the following components in parts by mass:
0.5-1 part of mulberry leaf powder;
1.5-2 parts of silica fume.
By adopting the technical scheme, the mulberry leaf powder and the micro silicon powder are added for compounding, so that the filling of the pores of the viscous cement is facilitated, the compactness of the viscous cement is enhanced, the compactness of the cement bonding layer is enhanced, the compressive strength of the cement bonding layer is enhanced, the cement bonding layer is facilitated to better provide better supporting force for the surface layer, and the ground is less prone to cracking when being hit by a heavy object;
simultaneously, through the compound use of mulberry leaf powder and little silica flour, still be favorable to filling the hole of the interface of cement tie coat and bed course and the hole of the interface of cement tie coat and surface course, thereby be favorable to strengthening the bond strength of cement tie coat and bed course and surface course, make cement tie coat and bed course and surface course be difficult to separate more, and then make the hollowing phenomenon of being difficult to appear in ground, make the compressive strength on ground be difficult to receive the influence, make ground be difficult to the fracture when receiving the heavy object to pound.
The invention is further configured to: the particle size of the micro silicon powder is 800-1000 meshes.
Adopt above-mentioned technical scheme, be 800 types of sand 1000 meshes through the particle diameter of control silica fume, be favorable to silica fume to pack the hole in the cement tie coat better, be favorable to silica fume to pack the hole at the bonding interface of cement tie coat and bed course and surface course better simultaneously, make the separation more difficult between cement tie coat and bed course and surface course, thereby make the hollowing phenomenon more difficult to appear in ground, make the compressive strength on ground more difficult to receive the influence, and then make ground be difficult to the fracture when receiving the heavy object to pound.
The invention is further configured to: the viscous cement also comprises the following components in parts by mass:
4-5 parts of fatty alcohol-polyoxyethylene ether.
Adopt above-mentioned technical scheme, through adding fatty alcohol polyoxyethylene ether, be favorable to strengthening the permeability of stickness cement, make stickness cement more easily permeate to bed course or surface course, thereby make cement tie coat and bed course and surface course be difficult to exist interface more, be favorable to strengthening the fusibility each other of cement tie coat and bed course and surface course, make the bond strength of cement tie coat and bed course and surface course stronger, and then make the separation of cement tie coat and bed course and surface course be difficult to more, make ground be difficult to appear hollowing phenomenon more, and then make the compressive strength on ground be difficult to receive the influence more, make ground be difficult to the fracture when receiving the heavy object to pound.
The invention is further configured to: the viscous cement also comprises the following components in parts by mass:
0.5-1 part of expanding agent.
By adopting the technical scheme, the expansion agent is added, so that the viscous cement can be favorably expanded in the solidification process, and the viscous cement can be favorably permeated into the cushion layer or the surface layer better, so that interfaces among the cement bonding layer, the cushion layer and the surface layer are more difficultly formed, the cement bonding layer, the cushion layer and the surface layer are further more difficultly separated, the ground is more difficultly subjected to hollowing, the compressive strength of the ground is further less influenced, and the ground is more difficultly cracked when being hit by a heavy object;
meanwhile, the expanding agent is added, so that the viscous cement expands in the solidification process, and the condition that the viscous cement is easy to crack due to contraction in the solidification process is reduced.
The invention is further configured to: the viscous cement also comprises the following components in parts by mass:
2.5-3 parts of hollow glass beads.
By adopting the technical scheme, the hollow glass beads are added, so that the compressive strength of the viscous cement is favorably enhanced, and a cement bonding layer is favorably used for better providing supporting force for a surface layer;
simultaneously, hollow glass bead still is favorable to filling the hole in the cement tie coat and the hole of the interface of cement tie coat and bed course and surface course for make the cement tie coat be difficult to more separate with bed course and surface course when closely knit degree and compressive strength of cement tie coat improve, thereby make ground be difficult to appear hollowing phenomenon more, and then make the compressive strength on ground be difficult to receive the influence more, make ground be difficult to the fracture when receiving the heavy object to pound and hit.
In conclusion, the invention has the following beneficial effects:
1. the plain cement layer is paved between the base layer and the cushion layer, and the cement bonding layer is poured between the cushion layer and the surface layer, so that the bonding force between the base layer and the cushion layer is favorably enhanced, the bonding force between the cushion layer and the surface layer is favorably enhanced, the base layer and the cushion layer as well as the cushion layer and the surface layer are more difficultly separated, the hollowing phenomenon is more difficultly generated in the use process of the ground, the compressive strength of the ground is favorably enhanced, and the ground is more difficultly cracked when being hit by a heavy object;
2. the base layer is cleaned up, so that the bonding strength between the base layer and the plain cement paste is enhanced, the base layer and the plain cement paste layer are more difficult to separate, the hollowing phenomenon is less prone to occurring on the ground, the compressive strength of the ground is enhanced, and the ground is less prone to cracking when being hit by a heavy object;
3. the base layer is wetted firstly, and then the plain cement layer is painted on the wetted base layer, so that the bonding strength of the plain cement paste and the base layer is favorably enhanced, the plain cement paste is more difficult to separate from the base layer, the floor is more difficult to have a hollowing phenomenon, the floor is more difficult to crack when being hit by a heavy object, and the condition that the floor cracks due to the shrinkage of the cement paste is favorably reduced;
4. the cement bonding layer and the surface layer are uniformly paved with the ash cakes, so that the compressive strength of the ground is enhanced, and the ground is less prone to cracking when being hit by a heavy object;
5. the surface layer is smeared and pressed for multiple times, so that the flatness of the surface of the ground is improved, the compactness of the surface layer is improved, the compressive strength of the surface layer is enhanced, and the ground is less prone to cracking when being hit by a heavy object;
6. through adopting fruit extract and the cooperation of moringa seed extract and ethylene-vinyl acetate copolymer of flowing through the wind, be favorable to strengthening the cohesive strength and the permeability of stickness cement, make stickness cement more easily permeate to bed course and surface course in, make the cement tie coat more difficult to separate with bed course and surface course, make ground be difficult to appear hollowing phenomenon in the use more, make the compressive strength on ground be difficult to receive the influence more, make ground be difficult to the fracture when receiving the heavy object to pound.
Drawings
FIG. 1 is a process flow diagram of the cement floor construction method of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
In the following examples, fine stone concrete for forming the fine stone concrete layer was manufactured from 190720, which is a product number of new building materials ltd in hinan.
In the following examples, cement mortar with a stock number of 191002 was used as cement mortar for forming a surface layer.
In the following examples, Portland cement is Portland cement P.O42.5, a Wawa stone produced by cement works in Wuhanyang dynasty.
In the following examples, fine sand from a manufacturer of mine products of thunder from Linshou county was used as the sand.
In the following examples, basalt from Zhangpu county Hongshen Stone Co., Ltd was used as the stone.
In the following examples, an ethylene-vinyl acetate copolymer of 250 brand manufactured by plastic chemical Co., Ltd, Dongguan was used as the ethylene-vinyl acetate copolymer.
In the following examples, the extract of Hydrangeae Strigosae was obtained from Sience Olympic Biotechnology Ltd.
In the following examples, the moringa seed extract is prepared from the moringa seed extract with the product number of YBB-1065 of Shaanxi Yuan Beibei Biotech limited.
In the following examples, mulberry leaf powder of suohui food ltd, showa city, was used.
In the following examples, the silica fume was 455124 available from the Tengteng composite Limited company, Changzhou.
In the following examples, the fatty alcohol-polyoxyethylene ether used was the fatty alcohol-polyoxyethylene ether of AEO-3 type from Haian petrochemical plant of Jiangsu province.
In the following examples, concrete expansive agent available from hui (shanghai) new materials science and technology limited, as a 60F product, was used as the expansive agent.
In the following examples, the hollow glass beads used were GS25 hollow glass beads available from Middling Steel group Maanshan institute of New Material science and technology, Inc.
Example 1
A cement ground construction method comprises the following steps:
s1, performing base layer processing, specifically as follows:
the dust, the laitance, the oil stain and the sundries on the base layer are cleaned, and the obvious concave position on the base layer is filled with cement mortar or fine aggregate concrete, so that the surface of the base layer is flush.
S2, wetting the base layer, which is specifically as follows:
the water is sprayed on the base layer for wetting one day before construction, and accumulated water on the surface of the base layer is timely drained.
S3, brushing a plain cement paste layer, which comprises the following specific steps:
mixing silicate cement and water in a ratio of 1:0.4 to prepare a plain cement slurry, and brushing a layer of the plain cement slurry on the surface of the wetted base layer in time to form a plain cement slurry layer.
S4, paving the fine aggregate concrete cushion layer, specifically as follows:
and pouring fine stone concrete on the plain cement paste layer while brushing plain cement paste to form a fine stone concrete cushion layer, trowelling the upper surface of the fine stone concrete layer, and controlling the laying thickness of the fine stone concrete cushion layer to be 4 cm.
S5, paving a cement bonding layer, specifically as follows:
preparing viscous cement, pouring the viscous cement on the fine aggregate concrete cushion layer to form a cement bonding layer before the fine aggregate concrete is solidified, trowelling the upper surface of the cement bonding layer, and controlling the laying thickness of the cement bonding layer to be 5 cm.
S6, laying the ash cakes, specifically as follows:
the method comprises the steps of marking placement of ash cakes according to the marked lines of a design drawing, then uniformly laying the ash cakes on a cement bonding layer before viscous cement is solidified, controlling the distance between the adjacent ash cakes to be 1.5m, and partially embedding the ash cakes into the cement bonding layer to be fixed.
S7, paving a surface layer, specifically as follows:
before the viscous cement is solidified, cement mortar is poured on the cement bonding layer to form a surface layer, and the paving thickness of the surface layer is controlled to be 30 cm.
S8, first-time wiping, which is specifically as follows:
before the initial setting of cement mortar, the foot print on the surface of the plane layer is smeared by an iron trowel.
S9, performing second-pass floating pressing, specifically as follows:
when the cement mortar is set to a state that a person steps on the surface layer and has foot prints but does not sink, the surface of the surface layer is smeared by an iron trowel until the surface is flat and bright.
S10, performing third-pass floating pressing, specifically as follows:
before the cement mortar is finally set and when no leveling mark is left in the leveling process of the leveling tool, an iron trowel is used for leveling the surface layer until the second leveling mark is flattened, and the surface layer is compacted and polished.
S11, curing and forming, specifically comprising the following steps:
after the third time of smearing for 10 hours, covering the white surface of the surface layer by using a plastic film, and sprinkling water for 3-4 times every day to keep the surface layer moist, wherein the curing temperature is controlled to be 25-30 ℃, and the curing time is controlled to be 28 days.
The viscous cement comprises the following components in parts by mass:
23kg of Portland cement; 17kg of water; 76kg of sand; 98kg of stones; 9kg of ethylene-vinyl acetate copolymer; 4.5kg of the anemone fruit extract; moringa seed extract 1.8 kg.
The preparation method of the viscous cement comprises the following steps:
23kg of Portland cement, 17kg of water, 76kg of sand and 98kg of stone are added into a 250L stirring kettle, stirring is carried out at the rotating speed of 200r/min, 9kg of ethylene-vinyl acetate copolymer, 4.5kg of tuber fleeceflower root extract and 1.8kg of moringa seed extract are added while stirring, and after uniform stirring and mixing, the viscous cement is formed.
Example 2
The difference from example 1 is that:
the elemental cement slurry in step S3 was mixed with portland cement and water at a ratio of 1:0.43 to prepare an elemental cement slurry.
The paving thickness of the fine aggregate concrete mat layer in step S4 was 4.5 cm.
The thickness of the cement bond layer laid in step S5 was 7.5 cm.
The spacing between adjacent ash cakes in step S6 was 1.8 m.
The thickness of the surface layer laid in step S7 was 32.5 cm.
The curing and molding in the step S11 are specifically as follows:
after the third time of smearing for 11h, covering the surface layer by using a covering material, and sprinkling water for 3-4 times every day to keep the surface layer moist, wherein the curing temperature is controlled to be 25-30 ℃, and the curing time is controlled to be 29 days.
Example 3
The difference from example 1 is that:
the elemental cement slurry in step S3 is prepared by mixing portland cement and water at a ratio of 1: 0.45.
The paving thickness of the fine aggregate concrete mat layer in step S4 was 5 cm.
The thickness of the cement bond layer laid in step S5 was 10 cm.
The spacing between adjacent ash cakes in step S6 is 2 m.
The thickness of the surface layer laid in step S7 was 35 cm.
The curing and molding in the step S11 are specifically as follows:
and after 12h of third-time smearing, covering the surface layer by using a covering material, and sprinkling 3-4 times a day to keep the surface layer moist, wherein the curing temperature is controlled to be 25-30 ℃, and the curing time is controlled to be 30 days.
Example 4
The difference from example 1 is that:
the elemental cement slurry in step S3 is prepared by mixing portland cement and water at a ratio of 1: 0.4.
The paving thickness of the fine aggregate concrete mat layer in step S4 was 4.8 cm.
The thickness of the cement bond layer laid in step S5 was 8 cm.
The spacing between adjacent ash cakes in step S6 was 1.9 m.
The paving thickness of the surface layer in the step S7 is 31 cm.
The curing and molding in the step S11 are specifically as follows:
after the third time of smearing for 11.5h, covering the surface layer by using a covering material, and sprinkling water for 3-4 times every day to keep the surface layer moist, wherein the curing temperature is controlled to be 25-30 ℃, and the curing time is controlled to be 28 days.
Example 5
The difference from example 4 is that:
the viscous cement comprises the following components in parts by weight:
20kg of Portland cement; 18kg of water; 77.5kg of sand; 95kg of stones; 10kg of ethylene-vinyl acetate copolymer; 5kg of the anemone fruit extract; moringa seed extract 1 kg.
The preparation method of the viscous cement comprises the following steps:
20kg of Portland cement, 18kg of water, 77.5kg of sand and 95kg of stone are added into a 250L stirring kettle, stirring is carried out at the rotating speed of 200r/min, 10kg of ethylene-vinyl acetate copolymer, 5kg of Tuber Flomium japonicum extract and 1kg of moringa seed extract are added while stirring, and after uniform stirring and mixing, viscous cement is formed.
Example 6
The difference from example 4 is that:
the viscous cement comprises the following components in parts by weight:
22.5kg of Portland cement; 16.5kg of water; 80kg of sand; 97.5kg of stones; 5kg of ethylene-vinyl acetate copolymer; 4kg of the anemone fruit extract; moringa seed extract 1.5 kg.
The preparation method of the viscous cement comprises the following steps:
22.5kg of Portland cement, 16.5kg of water, 80kg of sand and 97.5kg of stone are added into a 250L stirring kettle, stirring is carried out at the rotating speed of 200r/min, 5kg of ethylene-vinyl acetate copolymer, 4kg of Tubera fruits extract and 1.5kg of moringa seed extract are added while stirring, and after uniform stirring and mixing, viscous cement is formed.
Example 7
The difference from example 4 is that:
the viscous cement comprises the following components in parts by weight:
25kg of Portland cement; 15kg of water; 75kg of sand; 100kg of stones; 7.5kg of ethylene-vinyl acetate copolymer; 3kg of the anemone fruit extract; moringa seed extract 2 kg.
The preparation method of the viscous cement comprises the following steps:
25kg of Portland cement, 15kg of water, 75kg of sand and 100kg of stone are added into a 250L stirring kettle, stirring is carried out at the rotating speed of 200r/min, 7.5kg of ethylene-vinyl acetate copolymer, 3kg of Tubera fruits extract and 2kg of moringa seed extract are added while stirring, and after uniform stirring and mixing, the viscous cement is formed.
Example 8
The difference from example 4 is that:
the viscous cement also comprises the following components:
0.5kg of mulberry leaf powder; 2kg of silica fume.
In this example, the particle size of the fine silicon powder was 850 mesh.
The preparation method of the viscous cement comprises the following steps:
23kg of Portland cement, 17kg of water, 76kg of sand and 98kg of stone are added into a 250L stirring kettle, stirring is carried out at the rotating speed of 200r/min, 9kg of ethylene-vinyl acetate copolymer, 4.5kg of tuber fleeceflower fruit extract, 1.8kg of moringa seed extract, 0.5kg of mulberry leaf powder and 2kg of micro silicon powder are added while stirring, and after uniform stirring and mixing, the viscous cement is formed.
Example 9
The difference from example 4 is that:
the viscous cement also comprises the following components:
1kg of mulberry leaf powder; 1.5kg of silica fume.
In this example, the particle size of the fine silicon powder was 850 mesh.
The preparation method of the viscous cement comprises the following steps:
23kg of Portland cement, 17kg of water, 76kg of sand and 98kg of stone are added into a 250L stirring kettle, stirring is carried out at the rotating speed of 200r/min, 9kg of ethylene-vinyl acetate copolymer, 4.5kg of tuber fleeceflower fruit extract, 1.8kg of moringa seed extract, 1kg of mulberry leaf powder and 1.5kg of micro silicon powder are added while stirring, and after uniform stirring and mixing, the viscous cement is formed.
Example 10
The difference from example 4 is that:
the viscous cement also comprises the following components:
1.5kg of silica fume.
In this example, the particle size of the fine silicon powder was 850 mesh.
The preparation method of the viscous cement comprises the following steps:
23kg of Portland cement, 17kg of water, 76kg of sand and 98kg of stone are added into a 250L stirring kettle, stirring is carried out at the rotating speed of 200r/min, 9kg of ethylene-vinyl acetate copolymer, 4.5kg of tuber fleeceflower fruit extract, 1.8kg of moringa seed extract and 1.5kg of silica fume are added while stirring, and after stirring and mixing are carried out uniformly, the viscous cement is formed.
Example 11
The difference from example 4 is that:
the viscous cement also comprises the following components:
1kg of mulberry leaf powder.
The preparation method of the viscous cement comprises the following steps:
23kg of portland cement, 17kg of water, 76kg of sand and 98kg of stone are added into a 250L stirring kettle, stirring is carried out at the rotating speed of 200r/min, 9kg of ethylene-vinyl acetate copolymer, 4.5kg of tuber fleeceflower fruit extract, 1.8kg of moringa seed extract and 1kg of mulberry leaf powder are added while stirring, and after uniform stirring and mixing, the viscous cement is formed.
Example 12
The difference from example 4 is that:
the viscous cement also comprises the following components:
0.5kg of mulberry leaf powder; 2kg of micro silicon powder; 4.5kg of fatty alcohol-polyoxyethylene ether; 0.5kg of expanding agent; 3kg of hollow glass beads.
In this example, the particle size of the fine silicon powder is 800 mesh.
The preparation method of the viscous cement comprises the following steps:
23kg of Portland cement, 17kg of water, 76kg of sand and 98kg of stone are added into a 250L stirring kettle, stirring is carried out at the rotating speed of 200r/min, 9kg of ethylene-vinyl acetate copolymer, 4.5kg of tuber fleeceflower fruit extract, 1.8kg of moringa seed extract, 0.5kg of mulberry leaf powder, 2kg of micro silicon powder, 4.5kg of fatty alcohol-polyoxyethylene ether, 0.5kg of expanding agent and 3kg of hollow glass beads are added while stirring, and after uniform stirring and mixing, viscous cement is formed.
Example 13
The difference from example 4 is that:
the viscous cement also comprises the following components:
0.8kg of mulberry leaf powder; 1.5kg of micro silicon powder; 5kg of fatty alcohol-polyoxyethylene ether; 0.7kg of expanding agent; 2.5kg of hollow glass beads.
In this example, the particle size of the fine silicon powder was 900 mesh.
The preparation method of the viscous cement comprises the following steps:
23kg of Portland cement, 17kg of water, 76kg of sand and 98kg of stone are added into a 250L stirring kettle, stirring is carried out at the rotating speed of 200r/min, 9kg of ethylene-vinyl acetate copolymer, 4.5kg of tuber fleeceflower fruit extract, 1.8kg of moringa seed extract, 0.8kg of mulberry leaf powder, 1.5kg of micro silicon powder, 5kg of fatty alcohol-polyoxyethylene ether, 0.7kg of expanding agent and 2.5kg of hollow glass beads are added while stirring, and after uniform stirring and mixing, the viscous cement is formed.
Example 14
The difference from example 4 is that:
the viscous cement also comprises the following components:
1kg of mulberry leaf powder; 1.8kg of micro silicon powder; 4kg of fatty alcohol-polyoxyethylene ether; 1kg of expanding agent; 2.8kg of hollow glass beads.
In this example, the particle size of the fine silicon powder was 1000 mesh.
The preparation method of the viscous cement comprises the following steps:
23kg of Portland cement, 17kg of water, 76kg of sand and 98kg of stone are added into a 250L stirring kettle, stirring is carried out at the rotating speed of 200r/min, 9kg of ethylene-vinyl acetate copolymer, 4.5kg of tuber fleeceflower fruit extract, 1.8kg of moringa seed extract, 1kg of mulberry leaf powder, 1.8kg of micro silicon powder, 4kg of fatty alcohol-polyoxyethylene ether, 1kg of expanding agent and 2.8kg of hollow glass beads are added while stirring, and after uniform stirring and mixing, the viscous cement is formed.
Comparative example 1
The difference from example 14 is that: the viscous cement lacks the component ethylene-vinyl acetate copolymer.
Comparative example 2
The difference from example 14 is that: viscous cements lack the component extracts of ficus tikoua.
Comparative example 3
The difference from example 14 is that: the viscous cement lacks the constituent moringa seed extract.
Experiment 1
Tapping the ground by using an hollowing hammer, judging the hollowing condition of the ground according to the tapping sound, and grading according to the hollowing degree, wherein the score is 0-5, and the grading standard is as follows: the 0 point indicates no empty drum phenomenon, and the 5 point indicates that the empty drum phenomenon is obvious.
Experiment 2
And (3) smashing the ground by adopting the weights with sequentially increased weights in a free falling body at a height of 1.5m from the ground, and recording the weight (kg) of the weight adopted when the ground is cracked.
The data from the above experiments are shown in Table 1.
TABLE 1
According to the data comparison of the embodiment 1-4 in the table 1, the bonding strength among all layers of the ground is favorably enhanced by controlling the component proportion of the plain concrete in the construction process, controlling the laying thickness of all layers of the ground and controlling the maintenance conditions, so that the ground is less prone to hollowing, the compressive strength of the ground is favorably enhanced, and the ground is less prone to cracking when being hit by a heavy object.
According to the data contrast of table 1 embodiment 4-8 can obtain, through the quantity ratio of each component in the control stickness cement, be favorable to the cement tie coat to bond firmly with bed course and surface course better for each layer in the ground is difficult to separate, thereby makes the hollowing phenomenon appear more difficult to on ground, and then makes ground be difficult to the fracture when pounding by the heavy object.
According to the data comparison between examples 8-9 and examples 10-11 in table 1, the compressive strength of the floor can be better enhanced only when the mulberry leaf powder and the micro silicon powder are synergistically matched with each other, so that the floor is not easy to crack when being hit by a heavy object, and the compressive strength of the floor is easily affected by the lack of any component.
According to the data comparison between the embodiments 8-9 and the embodiments 12-14 in the table 1, the fatty alcohol-polyoxyethylene ether, the expanding agent and the hollow glass beads are added, so that the bonding strength between the cement bonding layer and the surface layer and the bonding strength between the cement bonding layer and the cushion layer are enhanced to a certain extent, and the layers on the ground are less prone to being separated, so that the hollowing phenomenon is less prone to occurring on the ground, the compressive strength of the ground is further enhanced, and the ground is less prone to cracking when being hit by a heavy object.
According to the data comparison between the embodiment 14 and the comparative examples 1 to 3 in the table 1, only when the ethylene-vinyl acetate copolymer, the ficus tikoua extract and the moringa seed extract are cooperatively matched with each other, the viscosity and the permeability of the viscous cement can be better enhanced, so that the bonding interfaces of the cement bonding layer, the cushion layer and the surface layer are less prone to separation, the ground is less prone to hollowing, the compressive strength of the ground is further enhanced, and the ground is less prone to cracking when being hit by a heavy object.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (9)
1. A cement ground construction method is characterized in that: the method comprises the following steps:
s1, base layer processing: cleaning a base layer;
s2, wetting the base layer: sprinkling water on the base layer for wetting and draining accumulated water on the surface of the base layer;
s3, plastering a plain cement paste layer: painting a layer of plain cement paste with the ratio of cement to water of 1:0.4-0.45 on the surface of the wetted base layer to form a plain cement paste layer;
s4, paving a fine aggregate concrete cushion layer: paving plain cement paste, and pouring a fine aggregate concrete cushion layer on the plain cement paste layer to form a fine aggregate concrete cushion layer;
s5, laying a cement bonding layer: before the fine aggregate concrete is solidified, pouring viscous cement on the fine aggregate concrete cushion layer to form a cement bonding layer;
s6, laying ash cakes: according to the marking line of a design drawing, uniformly laying gray cakes on a cement bonding layer before viscous cement is solidified, and partially embedding the gray cakes into the cement bonding layer for fixing;
s7, paving a surface layer: before the viscous cement is solidified, pouring cement mortar on the cement bonding layer to form a surface layer;
s8, first-pass wiping: before the initial setting of cement mortar, smearing the foot prints on the surface of the plane layer;
s9, second-time smearing: when cement mortar is condensed to the state that a person steps on the surface layer and has foot prints but does not sink, the surface of the surface layer is smeared and pressed to be flat and bright;
s10, third-time smearing: before the cement mortar is finally set and when no leveling mark is left in the leveling process of the leveling tool, leveling the surface layer until the second leveling line is flattened;
s11, curing and forming;
the viscous cement comprises the following components in parts by mass:
20-25 parts of Portland cement;
15-18 parts of water;
75-80 parts of sand;
95-100 parts of stone;
5-10 parts of ethylene-vinyl acetate copolymer;
3-5 parts of a Hylocereus undulatus extract;
1-2 parts of moringa seed extract.
2. The cement floor construction method as claimed in claim 1, wherein: in the step S6, the distance between the adjacent ash cakes is 1.5m-2 m.
3. The cement floor construction method as claimed in claim 1, wherein: the thickness of the fine stone concrete layer is 4-5cm, the thickness of the cement bonding layer is 5-10cm, and the thickness of the surface layer is 30-35 cm.
4. The cement floor construction method as claimed in claim 1, wherein: in the step S11, after the third time of smearing for 10-12h, covering the surface layer by using a covering material, and sprinkling water for 3-4 times per day to keep the surface layer moist, wherein the curing temperature is controlled to be 25-30 ℃, and the curing time is controlled to be 28-30 days.
5. The cement floor construction method as claimed in claim 1, wherein: the viscous cement also comprises the following components in parts by mass:
0.5-1 part of mulberry leaf powder;
1.5-2 parts of silica fume.
6. The cement floor construction method as claimed in claim 5, wherein: the particle size of the micro silicon powder is 800-1000 meshes.
7. The cement floor construction method as claimed in claim 1, wherein: the viscous cement also comprises the following components in parts by mass:
4-5 parts of fatty alcohol-polyoxyethylene ether.
8. The cement floor construction method as claimed in claim 1, wherein: the viscous cement also comprises the following components in parts by mass:
0.5-1 part of expanding agent.
9. The cement floor construction method as claimed in claim 1, wherein: the viscous cement also comprises the following components in parts by mass:
2.5-3 parts of hollow glass beads.
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