CN115304295B - High-doping waste marble powder-slag-based alkali-activated cementing material and preparation method thereof - Google Patents
High-doping waste marble powder-slag-based alkali-activated cementing material and preparation method thereof Download PDFInfo
- Publication number
- CN115304295B CN115304295B CN202210829282.0A CN202210829282A CN115304295B CN 115304295 B CN115304295 B CN 115304295B CN 202210829282 A CN202210829282 A CN 202210829282A CN 115304295 B CN115304295 B CN 115304295B
- Authority
- CN
- China
- Prior art keywords
- powder
- parts
- alkali
- marble powder
- waste marble
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004579 marble Substances 0.000 title claims abstract description 87
- 239000002699 waste material Substances 0.000 title claims abstract description 87
- 239000003513 alkali Substances 0.000 title claims abstract description 62
- 239000000463 material Substances 0.000 title claims abstract description 56
- 239000002893 slag Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 112
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 72
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 43
- 239000011707 mineral Substances 0.000 claims abstract description 43
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 37
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 37
- 239000007864 aqueous solution Substances 0.000 claims abstract description 36
- 238000003756 stirring Methods 0.000 claims abstract description 31
- 239000002245 particle Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 239000002585 base Substances 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 6
- 239000011812 mixed powder Substances 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000002994 raw material Substances 0.000 abstract description 14
- 239000002243 precursor Substances 0.000 abstract description 12
- 239000004568 cement Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 9
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 239000002910 solid waste Substances 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 4
- 239000004566 building material Substances 0.000 abstract description 2
- 239000004575 stone Substances 0.000 abstract description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- 239000004570 mortar (masonry) Substances 0.000 description 5
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000011398 Portland cement Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000012190 activator Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000010438 granite Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000003469 silicate cement Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Classifications
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
- C04B7/1535—Mixtures thereof with other inorganic cementitious materials or other activators with alkali metal containing activators, e.g. sodium hydroxide or waterglass
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A high-doping amount waste marble powder-slag base alkali-activated cementing material and a preparation method thereof relate to the technical field of low-carbon building materials, and the cementing material comprises the following components in parts by weight: 220-320 parts of waste marble powder, 120-220 parts of S95 mineral powder, 150-250 parts of alkali excitant and 80-130 parts of water; the alkali-activated agent consists of sodium silicate aqueous solution and sodium hydroxide particles; the method is to weigh the raw materials respectively according to the weight, and mix and stir evenly to obtain the cementing material. The waste marble powder adopted by the invention is derived from solid waste of stone processing factories, and binary cementing materials are prepared by mixing the waste marble powder with mineral powder, so that the problem of insufficient activity of the waste marble powder as a precursor can be solved, and the problem of short setting time of the unitary slag cement can be solved; and the mixing amount of the waste marble powder is greatly improved, so that the aim of maximizing the utilization of resources in the field of alkali-activated precursor materials is fulfilled.
Description
Technical Field
The invention relates to the technical field of low-carbon building materials, in particular to a high-doping amount waste marble powder-slag-based alkali-activated cementing material and a preparation method thereof.
Background
Along with the rapid development of social economy, the building industry presents a rising trend like bamboo shoots after rain, and cement is used as an indispensable cementing material in the building engineering, which is characterized in thatThe yield is continuously increased. However, cement production requires a process of 'two grinding and one firing', consumes a large amount of energy and emits a large amount of CO 2 Is one of the important causes of greenhouse effect. The alkali-activated cement can utilize solid waste rich in aluminum silicate as a precursor material, is activated in an alkaline medium to form strength, is hopeful to become a novel low-carbon gelling material for replacing cement, achieves the purposes of recycling solid waste and reducing carbon emission, and becomes a research hot spot in recent years.
The granulated blast furnace slag is waste slag produced in the steel industry, has extremely strong volcanic ash characteristics after being ground, and can form high-strength cementing materials under the alkali excitation condition. However, the setting time of the monobasic slag cement is too short, even the phenomenon of flash setting occurs, and the application in engineering cannot be satisfied.
In addition, marble slabs are used as decorative materials commonly used in the construction industry, and the yield tends to be increased. However, waste powder is inevitably generated in the plate processing process, and if the waste powder is not properly treated, the waste marble powder accumulated everywhere occupies a great deal of land resources, and meanwhile, the influence on the local ecological environment is likely to be caused. Since the main component of the waste marble powder is calcium carbonate and is inert, the waste marble powder is mainly used as a filler in concrete at present, however, the utilization rate is still low, and a better way needs to be searched for further improving the recycling rate of the waste marble powder. The invention patent application with publication number of CN 110981234A discloses a cementing material and a preparation method thereof, wherein the cementing material comprises the following raw material components in parts by weight: 40-60 parts of slag, 10-30 parts of marble powder, 10-30 parts of granite powder and 3-8 parts of alkali activator. Although the patent can effectively utilize marble powder and granite powder, the amount of waste marble powder is still small, and meanwhile, the defect of too short coagulation time exists.
Disclosure of Invention
The invention aims to solve the technical problems that: the high-doping amount waste marble powder-slag-based alkali-activated cementing material and the preparation method thereof are provided, so that the slag consumption is reduced on the basis of obtaining the cementing material with excellent mechanical properties, the doping amount of the waste marble powder is greatly increased, the aim of maximally utilizing resources of the waste marble powder in the field of alkali-activated precursor materials is fulfilled, and meanwhile, the problem of over-short coagulation time of monobasic slag cement in the prior art is solved.
The technical scheme for solving the technical problems is as follows: the high-doping amount waste marble powder-slag base alkali-activated cementing material comprises the following raw materials in parts by weight: 220-320 parts of waste marble powder, 120-220 parts of mineral powder, 150-250 parts of alkali-exciting agent and 80-130 parts of water.
The invention further adopts the technical scheme that: the basic parameters of the waste marble powder are as follows: caO is more than or equal to 50wt%, loss on ignition is more than or equal to 38wt%, and specific surface area is more than or equal to 1m 2 /g。
The invention further adopts the technical scheme that: the mineral powder is S95 mineral powder, and the basic parameters of the S95 mineral powder are as follows: caO is more than or equal to 50wt percent, siO 2 ≥20wt%，Al 2 O 3 More than or equal to 10wt%, loss on ignition more than or equal to 0.6wt%, and specific surface area more than or equal to 0.4m 2 /g。
The invention further adopts the technical scheme that: the alkali-activated agent is a mixed solution of sodium silicate aqueous solution and sodium hydroxide particles, and the chemical composition and the content of the sodium silicate aqueous solution are as follows: siO (SiO) 2 ≥25wt%，Na 2 O is more than or equal to 6wt percent, and the modulus of the sodium silicate aqueous solution is 3.0 to 3.8; the mass ratio of the sodium silicate aqueous solution to the sodium hydroxide particles is (4-6): 1.
The other technical scheme of the invention is as follows: the preparation method of the high-doping amount waste marble powder-slag base alkali-activated cementing material comprises the following steps:
(1) weighing the following materials in parts by weight: 220-320 parts of waste marble powder, 120-220 parts of mineral powder, 150-250 parts of alkali excitant and 80-130 parts of water;
(2) adding waste marble powder and mineral powder into a stirring pot, and stirring at a low speed for 1-3 min to prepare mixed powder;
(3) uniformly mixing an alkali excitant and water to prepare mixed alkali liquor;
(4) adding mixed alkali liquor into a stirring pot, and stirring at a low speed for 1-3 min to obtain the high-doping waste marble powder-slag-based alkali-activated cementing material.
The invention further adopts the technical scheme that: the basic parameters of the waste marble powder are as follows: caO is more than or equal to 50wt%, loss on ignition is more than or equal to 38wt%, and specific surface area is more than or equal to 1m 2 /g。
The invention further adopts the technical scheme that: the mineral powder is S95 mineral powder, and the basic parameters of the S95 mineral powder are as follows: caO is more than or equal to 50wt percent, siO 2 ≥20wt%，Al 2 O 3 More than or equal to 10wt%, loss on ignition more than or equal to 0.6wt%, and specific surface area more than or equal to 0.4m 2 /g。
The invention further adopts the technical scheme that: the alkali-activated agent is a mixed solution of sodium silicate aqueous solution and sodium hydroxide particles, and the chemical composition and the content of the sodium silicate aqueous solution are as follows: siO (SiO) 2 ≥25wt%，Na 2 O is more than or equal to 6wt percent, and the modulus of the sodium silicate aqueous solution is 3.0 to 3.8; the mass ratio of the sodium silicate aqueous solution to the sodium hydroxide particles is (4-6): 1.
The invention further adopts the technical scheme that: in the steps (2) and (4), the low-speed stirring means that the stirring speed is 140+/-5 revolutions per minute.
By adopting the structure, the high-doping amount waste marble powder-slag-based alkali-activated cementing material and the preparation method thereof have the following beneficial effects compared with the prior art:
1. can obtain the cementing material with excellent mechanical properties
The cementing material comprises the following raw materials in parts by weight: 220-320 parts of waste marble powder, 120-220 parts of mineral powder, 150-250 parts of alkali-exciting agent and 80-130 parts of water. Wherein the waste marble powder is waste powder generated by cutting and polishing in a marble processing factory, and the main component of the marble powder is calcium carbonate; calcium carbonate is a viable solution as an alkali-activated precursor material, however, it is low in activity and requires the re-incorporation of a highly active alkali-activated precursor material to meet the basic mechanical properties. Therefore, the invention greatly improves the consumption of waste marble powder, and simultaneously adds a small amount of S95 mineral powder with higher activity, and the cementing material with excellent output mechanical property can be prepared through reasonable proportioning. Experiments prove that the cementing material prepared by the invention has good fluidity, the initial setting time meets the specification that silicate cement in the current specification is more than or equal to 45 minutes, and the construction requirement can be met. In addition, the invention selects the alkali activator with proper proportion, and when the mixing amount of the waste marble powder is up to 72.7%, the compressive strength of the waste marble powder in 28d age reaches more than 42.5MPa, thereby meeting the requirements of the Portland cement with the mark P.II of 42.5R.
2. Can make the waste marble powder be maximally utilized
The cementing material raw materials are optimized in reasonable mixing proportion, so that the slag usage amount which can be obtained by high-temperature calcination is reduced, and a large amount of waste marble powder is doped, wherein the waste marble powder doping amount is 50-72.7%, and is the proportion of waste marble powder in the sum of the two powder masses of waste marble powder and mineral powder. Therefore, the invention greatly improves the utilization rate of solid waste resources of the waste marble powder, changes waste into valuable, and realizes the maximum utilization of resources in the field of alkali-activated precursor materials.
3. Can solve the problem of insufficient activity of waste marble powder as a precursor and the problem of short setting time of unitary slag cement
On the one hand, if only waste marble powder is used as a precursor material, the activity thereof is insufficient; on the other hand, the reactivity of the ore powder is so high that the setting time of the monolithic system with only ore powder as a precursor is too short. The binary cementing material is prepared by adopting the technical means of re-doping a large amount of waste marble powder and a small amount of mineral powder, and can play a complementary role, so that the problem of insufficient activity of the waste marble powder as a precursor is solved, the activity of a single-element system of only mineral powder as the precursor is reduced, and the coagulation speed is slowed down.
4. Low production cost, energy conservation and environmental protection
Compared with slag and other high-volcanic ash active raw materials, the invention adopts waste marble powder as a natural industrial solid waste which can be used after simple treatment, thereby greatly reducing the production cost and simultaneously conforming to the low-carbon energy-saving concept.
In addition, the coagulation time can be greatly adjusted by only adjusting the mixing amount of the waste marble powder, and compared with the method for adjusting the alkali excitant, the method is more environment-friendly and easier to realize. Compared with cement production, the cement has the functions of energy conservation and emission reduction, and has important significance in reducing greenhouse effect and protecting ecological environment.
The technical features of the high-doped waste marble powder-slag-based alkali-activated cementitious material and the preparation method thereof according to the present invention are further described below with reference to examples.
Detailed Description
Example 1
The high-doping amount waste marble powder-slag base alkali-activated cementing material comprises the following raw materials in parts by weight: 320 parts of waste marble powder, 120 parts of mineral powder, 180 parts of alkali-exciting agent and 100 parts of water; wherein:
the basic parameters of the waste marble powder are as follows: caO content 54.1wt%, loss on ignition 42.5wt%, specific surface area 1.1m 2 /g；
The mineral powder is S95 mineral powder, the S95 mineral powder is ground and granulated blast furnace slag powder, and the basic parameters of the S95 mineral powder are as follows: caO content 56.9wt%, siO 2 The content of Al is 25.6wt% 2 O 3 Content 12.1wt%, loss on ignition 0.72wt%, specific surface area 0.43m 2 /g；
The alkali-activated agent is a mixed solution of sodium silicate aqueous solution and sodium hydroxide particles, and the chemical composition and the content of the sodium silicate aqueous solution are as follows: siO (SiO) 2 Content 27.7wt%, na 2 O content 8.4wt%, sodium silicate aqueous solution modulus 3.4; the mass fraction ratio of the sodium silicate aqueous solution to the sodium hydroxide particles is 5:1, namely 150 parts of sodium silicate aqueous solution and 30 parts of sodium hydroxide particles, wherein the purity of the sodium hydroxide particles is more than or equal to 96 percent.
The preparation method of the high-doping amount waste marble powder-slag-based alkali-activated cementing material in the first embodiment comprises the following steps:
(1) weighing the following materials in parts by weight: 320 parts of waste marble powder, 120 parts of mineral powder, 150 parts of sodium silicate aqueous solution, 30 parts of sodium hydroxide particles and 100 parts of water;
(2) adding waste marble powder and mineral powder into a stirring pot, and stirring at a low speed for 2min to prepare mixed powder;
(3) uniformly mixing water, a sodium silicate aqueous solution and sodium hydroxide particles to prepare mixed alkali liquor;
(4) adding mixed alkali liquor into a stirring pot, and stirring at a low speed for 2min to obtain the high-dosage waste marble powder-slag-based alkali-activated cementing material.
In the steps (2) and (4), the low-speed stirring means that the stirring speed is 140+/-5 revolutions per minute.
Example two
The high-doping amount waste marble powder-slag base alkali-activated cementing material comprises the following raw materials in parts by weight: 270 parts of waste marble powder, 170 parts of mineral powder, 180 parts of alkali-exciting agent and 100 parts of water;
the basic parameters of the waste marble powder are as follows: caO content 54.1wt%, loss on ignition 42.5wt%, specific surface area 1.1m 2 /g；
The mineral powder is S95 mineral powder, the S95 mineral powder is ground and granulated blast furnace slag powder, and the basic parameters of the S95 mineral powder are as follows: caO content 56.9wt%, siO 2 The content of Al is 25.6wt% 2 O 3 Content 12.1wt%, loss on ignition 0.72wt%, specific surface area 0.43m 2 /g；
The alkali-activated agent is a mixed solution of sodium silicate aqueous solution and sodium hydroxide particles, and the chemical composition and the content of the sodium silicate aqueous solution are as follows: siO (SiO) 2 Content 27.7wt%, na 2 O content 8.4wt%, sodium silicate aqueous solution modulus 3.4; the mass fraction ratio of the sodium silicate aqueous solution to the sodium silicate aqueous solution is 5:1, namely 150 parts of sodium silicate aqueous solution and 30 parts of sodium hydroxide particles, wherein the purity of the sodium hydroxide particles is more than or equal to 96%.
The preparation method of the high-doping amount waste marble powder-slag-based alkali-activated cementing material in the second embodiment comprises the following steps:
(1) weighing the following materials in parts by weight: 270 parts of waste marble powder, 170 parts of S95 mineral powder, 150 parts of sodium silicate aqueous solution, 30 parts of sodium hydroxide particles and 100 parts of water;
(2) adding waste marble powder and mineral powder into a stirring pot, and stirring at a low speed for 2min to prepare mixed powder;
(3) uniformly mixing water, a sodium silicate aqueous solution and sodium hydroxide particles to prepare mixed alkali liquor;
(4) adding mixed alkali liquor into a stirring pot, and stirring at a low speed for 2min to obtain the high-dosage waste marble powder-slag-based alkali-activated cementing material.
In the steps (2) and (4), the low-speed stirring means that the stirring speed is 140+/-5 revolutions per minute.
Example III
The high-doping amount waste marble powder-slag base alkali-activated cementing material comprises the following raw materials in parts by weight: 220 parts of waste marble powder, 220 parts of mineral powder, 180 parts of alkali-exciting agent and 100 parts of water;
the basic parameters of the waste marble powder are as follows: caO content 54.1wt%, loss on ignition 42.5wt%, specific surface area 1.1m 2 /g；
The mineral powder is S95 mineral powder, the S95 mineral powder is ground and granulated blast furnace slag powder, and the basic parameters of the S95 mineral powder are as follows: caO content 56.9wt%, siO 2 The content of Al is 25.6wt% 2 O 3 Content 12.1wt%, loss on ignition 0.72wt%, specific surface area 0.43m 2 /g；
The alkali-activated agent is a mixed solution of sodium silicate aqueous solution and sodium hydroxide particles, and the chemical composition and the content of the sodium silicate aqueous solution are as follows: siO (SiO) 2 Content 27.7wt%, na 2 O content 8.4wt%, sodium silicate aqueous solution modulus 3.4; the mass fraction ratio of the sodium silicate aqueous solution to the sodium hydroxide particles is 5:1, namely 150 parts of the sodium silicate aqueous solution and 30 parts of the sodium hydroxide particles, wherein the purity of the sodium hydroxide particles is more than or equal to 96%.
The preparation method of the high-doping amount waste marble powder-slag-based alkali-activated cementing material comprises the following steps:
(1) weighing the following materials in parts by weight: 220 parts of waste marble powder, 220 parts of mineral powder, 150 parts of sodium silicate aqueous solution, 30 parts of sodium hydroxide particles and 100 parts of water;
(2) adding waste marble powder and mineral powder into a stirring pot, and stirring at a low speed for 2min to prepare mixed powder;
(3) uniformly mixing water and an alkali excitant to prepare mixed alkali liquor;
(4) adding mixed alkali liquor into a stirring pot, and stirring at a low speed for 2min to obtain the high-dosage waste marble powder-slag-based alkali-activated cementing material.
In the steps (2) and (4), the low-speed stirring means that the stirring speed is 140+/-5 revolutions per minute.
In the above embodiments one to three, all the raw materials except the waste marble powder are sourced from the stone processing factories, and the raw materials can be purchased commercially.
In order to detect the strength of the high-doped waste marble powder-slag based alkali-activated cementing material, according to the national standard GB/T17671-2021 cement mortar strength detection method (ISO method), the high-doped waste marble powder-slag based alkali-activated cementing material prepared in the first to third embodiments is uniformly stirred with 1550 parts of Chinese ISO standard sand by weight respectively to obtain alkali-activated mortar, the mortar is poured into a mold and vibrated to be compact, a layer of plastic film is covered on the mold, the mold is placed in the room and removed after 24 hours to obtain a mortar test piece, then the mortar test piece is placed in a curing box for curing, and the temperature in the curing box is 20+/-2 ℃ and the relative humidity is more than or equal to 95%. The flexural strength and compressive strength of the mortar test pieces 3d, 7d, 28d were measured, and the measurement results are shown in Table I.
Attach table 1
As can be seen from the attached table, the high-doping amount waste marble powder-slag-based alkali-activated cementing material prepared in the embodiment one to the embodiment three has good fluidity, the initial setting time meets the specification that the Portland cement in the current specification is more than or equal to 45min, and the construction requirement can be met. In the embodiment of the invention, which selects a proper alkali-exciting agent and has the waste marble powder content of 72.7 percent, the compressive strength at the 28d age reaches over 42.5MPa, meets the requirements of the Portland cement with the mark P.II of 42.5R, and greatly improves the recycling utilization rate of the waste marble powder.
Examples four to eight
The raw materials used in the method are the same as those in the first to third embodiments, except that the specific content, namely the weight portion, is changed, and the specific details are shown in the second attached table.
And the following table II: the raw material contents in examples IV to eight are listed (in parts by weight)
As a variation of examples one to eight, the raw materials of the high-doped waste marble powder-slag-based alkali-activated gelling material are generally as follows in parts by weight: 220-320 parts of waste marble powder, 120-220 parts of mineral powder, 150-250 parts of alkali-exciting agent and 80-130 parts of water.
As a further variation of embodiment one to embodiment eight, the basic parameters of the waste marble powder are generally: caO is more than or equal to 50wt%, loss on ignition is more than or equal to 38wt%, and specific surface area is more than or equal to 1m 2 /g。
As a further variation of embodiment one to embodiment eight, the basic parameters of the S95 ore powder are generally: caO is more than or equal to 50wt percent, siO 2 ≥20wt%，Al 2 O 3 More than or equal to 10wt%, loss on ignition more than or equal to 0.6wt%, and specific surface area more than or equal to 0.4m2/g.
As a further variation of the first to eighth embodiments, the chemical composition and the content of the aqueous sodium silicate solution are as follows: the SiO2 is more than or equal to 25wt percent, the Na2O is more than or equal to 6wt percent, and the modulus of the sodium silicate aqueous solution is 3.0 to 3.8; the mass ratio of the sodium silicate aqueous solution to the sodium hydroxide particles is (3-5): 1.
Claims (4)
1. A preparation method of a high-doping amount waste marble powder-slag base alkali-activated cementing material is characterized by comprising the following steps: the method comprises the following steps:
(1) weighing the following materials in parts by weight: 220-320 parts of waste marble powder, 120-220 parts of mineral powder, 150-250 parts of alkali excitant and 80-130 parts of water;
(2) adding waste marble powder and mineral powder into a stirring pot, and stirring at a low speed for 1-3 min to prepare mixed powder;
(3) uniformly mixing an alkali excitant and water to prepare mixed alkali liquor;
(4) adding mixed alkali liquor into a stirring pot, and stirring at a low speed for 1-3 min to obtain a high-doping amount waste marble powder-slag-based alkali-activated cementing material;
the alkali-activated agent is a mixed solution of sodium silicate aqueous solution and sodium hydroxide particles, and the chemical composition and the content of the sodium silicate aqueous solution are as follows: siO (SiO) 2 ≥25wt%，Na 2 O is more than or equal to 6wt percent, and the modulus of the sodium silicate aqueous solution is 3.0 to 3.8; the mass ratio of the sodium silicate aqueous solution to the sodium hydroxide particles is (4-6): 1.
2. The method for preparing the high-doping amount waste marble powder-slag-based alkali-activated gelling material according to claim 1, which is characterized in that: the basic parameters of the waste marble powder are as follows: caO is more than or equal to 50wt%, loss on ignition is more than or equal to 38wt%, and specific surface area is more than or equal to 1m 2 /g。
3. The method for preparing the high-doping amount waste marble powder-slag-based alkali-activated gelling material according to claim 1, which is characterized in that: the mineral powder is S95 mineral powder, and the basic parameters of the S95 mineral powder are as follows: caO is more than or equal to 50wt percent, siO 2 ≥20wt%，Al 2 O 3 More than or equal to 10wt%, loss on ignition more than or equal to 0.6wt%, and specific surface area more than or equal to 0.4m 2 /g。
4. The method for preparing the high-doping amount waste marble powder-slag-based alkali-activated gelling material according to claim 1, which is characterized in that: in the steps (2) and (4), the low-speed stirring means that the stirring speed is 140+/-5 revolutions per minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210829282.0A CN115304295B (en) | 2022-07-15 | 2022-07-15 | High-doping waste marble powder-slag-based alkali-activated cementing material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210829282.0A CN115304295B (en) | 2022-07-15 | 2022-07-15 | High-doping waste marble powder-slag-based alkali-activated cementing material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115304295A CN115304295A (en) | 2022-11-08 |
| CN115304295B true CN115304295B (en) | 2023-08-15 |
Family
ID=83856256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210829282.0A Active CN115304295B (en) | 2022-07-15 | 2022-07-15 | High-doping waste marble powder-slag-based alkali-activated cementing material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115304295B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116462484A (en) * | 2023-05-11 | 2023-07-21 | 桂林理工大学 | Slag-waste marble powder-based alkali-activated high-strength concrete and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086103A (en) * | 2014-06-30 | 2014-10-08 | 凤阳中都水泥有限公司 | Cement preparation method |
| CN105481467A (en) * | 2015-11-19 | 2016-04-13 | 重庆千向建材有限公司 | Full-slag foam light soil and preparation method thereof |
| TWI640491B (en) * | 2017-10-17 | 2018-11-11 | 國立成功大學 | Binder material and manufacturing method thereof and cured mortar and manufacturing method thereof |
| CN110981234A (en) * | 2019-12-10 | 2020-04-10 | 华南理工大学 | Cementing material and preparation method thereof |
| CN111574166A (en) * | 2020-05-22 | 2020-08-25 | 大连交通大学 | Alkali-activated cementing material and preparation method thereof |
| CN111592287A (en) * | 2020-05-21 | 2020-08-28 | 南昌航空大学 | Preparation method of calcium carbonate type waste residue geopolymer |
| CN112851187A (en) * | 2021-01-28 | 2021-05-28 | 科之杰新材料集团有限公司 | Enhanced concrete admixture and preparation method thereof |
| WO2021137787A2 (en) * | 2019-12-30 | 2021-07-08 | Gaziantep Universitesi Rektorlugu | A binding construction material composition and production method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10131575B2 (en) * | 2017-01-10 | 2018-11-20 | Roman Cement, Llc | Use of quarry fines and/or limestone powder to reduce clinker content of cementitious compositions |
-
2022
- 2022-07-15 CN CN202210829282.0A patent/CN115304295B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086103A (en) * | 2014-06-30 | 2014-10-08 | 凤阳中都水泥有限公司 | Cement preparation method |
| CN105481467A (en) * | 2015-11-19 | 2016-04-13 | 重庆千向建材有限公司 | Full-slag foam light soil and preparation method thereof |
| TWI640491B (en) * | 2017-10-17 | 2018-11-11 | 國立成功大學 | Binder material and manufacturing method thereof and cured mortar and manufacturing method thereof |
| CN110981234A (en) * | 2019-12-10 | 2020-04-10 | 华南理工大学 | Cementing material and preparation method thereof |
| WO2021137787A2 (en) * | 2019-12-30 | 2021-07-08 | Gaziantep Universitesi Rektorlugu | A binding construction material composition and production method thereof |
| CN111592287A (en) * | 2020-05-21 | 2020-08-28 | 南昌航空大学 | Preparation method of calcium carbonate type waste residue geopolymer |
| CN111574166A (en) * | 2020-05-22 | 2020-08-25 | 大连交通大学 | Alkali-activated cementing material and preparation method thereof |
| CN112851187A (en) * | 2021-01-28 | 2021-05-28 | 科之杰新材料集团有限公司 | Enhanced concrete admixture and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115304295A (en) | 2022-11-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111606612B (en) | Alkali-activated cementitious materials and methods of use thereof | |
| CN111574166B (en) | Alkali-activated cementing material and preparation method thereof | |
| CN111732395B (en) | Waste concrete-based regenerated dry powder masonry mortar and preparation method thereof | |
| CN112573884A (en) | High-toughness alkali slag granite powder aerated concrete block and preparation method thereof | |
| CN109776003A (en) | A kind of calcium based geopolymer cementitious material of multiple elements design powder and preparation method thereof | |
| CN112159176A (en) | Wear-resistant self-leveling cement mortar doped with waste glass and preparation method thereof | |
| CN115321857A (en) | Retarding geopolymer concrete and preparation method thereof | |
| CN112408829A (en) | Solid waste reclaimed sand and preparation method and application thereof | |
| CN115925306B (en) | Dicalcium silicate activator and preparation method and application thereof | |
| CN115304295B (en) | High-doping waste marble powder-slag-based alkali-activated cementing material and preparation method thereof | |
| CN114804773A (en) | Composite solid waste pavement base course binder and preparation method thereof | |
| CN114180897A (en) | Premixed mortar for green building and construction method | |
| CN113372052A (en) | Concrete prepared from glassy state coal slag and preparation method thereof | |
| CN110963766A (en) | High-performance concrete for inhibiting granite alkali activity and preparation method thereof | |
| CN115010455B (en) | High-performance full-solid waste concrete and preparation method thereof | |
| CN113773001A (en) | Geopolymer material containing iron ore tailings powder and granite stone powder and preparation method thereof | |
| CN109265114A (en) | A kind of high-strength bricks for road surface and preparation method thereof | |
| CN111825356A (en) | High-activity regeneration auxiliary cementing material based on physical ball milling and chemical modification synergistic reinforcement of brick-concrete powder and preparation method thereof | |
| CN115893880B (en) | Low-carbon gel material and preparation method and application thereof | |
| CN117430390B (en) | Method for preparing water permeable brick by using granite stone waste | |
| CN115849940B (en) | Aerated concrete and preparation method thereof | |
| CN116835926B (en) | Low-carbon tailing concrete and preparation method thereof | |
| CN108793782B (en) | White cement produced by using industrial waste residue and alkaline residue and preparation method thereof | |
| CN115745555A (en) | Quick-hardening type alkali-activated gypsum-slag-based high-flow concrete and preparation method thereof | |
| CN100368332C (en) | Mixed material in use for producing cement and preparaton method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240830 Address after: 427000, Unit 2, Building 1, Shanshui Impression, Yongding District, Zhangjiajie City, Hunan Province, China, G103 Patentee after: Zhangjiajie Haoshi Stone Co.,Ltd. Country or region after: China Address before: 541004 the Guangxi Zhuang Autonomous Region Guilin City Seven Star District Building Road No. 12 Patentee before: GUILIN University OF TECHNOLOGY Country or region before: China |