CN105036667A - Preparation method for antifreezing dry-mixed mortar - Google Patents
Preparation method for antifreezing dry-mixed mortar Download PDFInfo
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- CN105036667A CN105036667A CN201510407571.1A CN201510407571A CN105036667A CN 105036667 A CN105036667 A CN 105036667A CN 201510407571 A CN201510407571 A CN 201510407571A CN 105036667 A CN105036667 A CN 105036667A
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- cement
- swelling agent
- natural sand
- mine tailing
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention relates to a comprehensive utilization technology in the field of building materials, specifically to a preparation method for antifreezing dry-mixed mortar. The antifreezing dry-mixed mortar comprises the following components: 15 to 20 parts of cement, 50 to 70 parts of mine tailing aggregate, 10 to 15 parts of natural sand, 5 to 10 parts of zinc sulfate, 1 to 2 parts of a water reducer, 1 to 1.5 part of an organic bentonite thickening rheological additive, 1 to 1.5 part of an expansion agent, 1 to 2 parts of cellulose ether, 1 to 2 parts of latex powder and 1.05 to 1.4 part of an antifreezing agent. Compared with prior art, the invention has the following beneficial effects: the mortar is prepared by using mine tailing to replace the natural sand and adding additives like the antifreezing agent, so the natural sand is reduced to use, and mine tailing discharge is decreased; thus, waste utilization is achieved, and energy conservation and environment protection are realized; meanwhile, the problems like poor workability in construction usage in winter and poor antifreezing property of the mortar are solved, and construction operation time in winter is prolonged.
Description
Technical field
The present invention relates to a kind of comprehensive utilization technique of building material field, particularly relate to a kind of preparation method of antifreeze dry-mixed mortar.
Background technology
At the realm of building construction, mortar is a kind of material of construction that usage quantity is very large, and preparing mortar needs to consume a large amount of natural sand.China is big steel country, and iron ore, based on lean ore, therefore produces the waste of smart iron powder---mine tailing is very abundant, and its discharge generally adopts tailing dam (storehouse) to concentrate stacking, not only land occupation, and contaminate environment.Utilizing mine tailing to substitute natural sand, to prepare mortar technology be a kind of not only utilization of waste material but also the comprehensive utilization technique of energy-conserving and environment-protective.Building operation optimum temps is more than 5 DEG C, and in the northern area of China, winter time is long, and cold snap requires that mortar must have the early multiple performance such as strong, antifreeze, freeze proof, erosion resistance, to adapt to the construction of mortar under low temperature, subzero temperature.
Summary of the invention
For overcoming prior art defect, the technical problem that the present invention solves is to provide a kind of preparation method of antifreeze dry-mixed mortar, utilize mine tailing to substitute the admixture such as natural sand, interpolation frostproofer and prepare mortar, reduce natural sand to use, reduce tailings discharging, not only accomplish utilization of waste material but also achieved energy-conserving and environment-protective, also solved mortar winter construction simultaneously and use that workability is poor, the poor problem of anti-freezing property, extend the winter construction activity duration.
In order to achieve the above object, the present invention realizes by the following technical solutions:
A kind of antifreeze dry-mixed mortar, it is characterized in that, comprise the component of following weight: cement 15-20, mine tailing aggregate 50-70, natural sand 10-15, zinc sulfate 5-10, water reducer 1-2, organobentonite thickening auxiliary rheological agents 1-1.5, swelling agent 1-1.5, ether of cellulose 1-2, latex powder 1-2, frostproofer 1.05-1.4;
Described cement is ordinary Portland cement, silicate cement, Portland blast furnace slag cement, Portland fly ash cement, and strength grade is 32.5 or 42.5;
Described mine tailing aggregate is for forming by producing mine tailing stone in ore extraction and ore dressing process through broken classification, and its fineness modulus is 1.6-2.3, and wherein below 0.2mm particle is less than 15%;
Described natural sand fineness modulus is 1.6-2.3, and apparent density is greater than 2200Kg/m
3, silt content is less than 1.0%;
Wherein, water reducer is the mixture of one or more of poly-hydroxy acid pulvis water reducer, naphthalene system pulvis water reducer and aliphatics pulvis water reducer; Swelling agent is the mixture of one or more of UEA swelling agent, alum swelling agent, calcium oxide swelling agent and iron filings swelling agent; Ether of cellulose is one or both mixtures of methyl cellulose ether and hydroxypropyl methyl cellulose ether; Described frostproofer is the mixture of one or more of Sodium Nitrite, carbonate, calcium chloride, calcium nitrite, ethylene glycol.
The preparation method of described a kind of antifreeze dry-mixed mortar, comprises the following steps:
1) by tail ore reduction, be dried to water ratio below 0.5%, sieve, the particle of >=4.75mm sends into crusher, and remaining is sent into sieve apparatus classification and to weigh feeding stirrer, and the following particle of control 0.2mm is less than 15%;
2) mine tailing of crusher >=4.75mm is admitted to through again broken, repeating step 1);
3) natural sand is dried to water ratio below 0.5%, sieves, the particle of >=4.75mm sends into crusher, and remaining sends into stirrer;
4) natural sand of crusher >=4.75mm is admitted to through again broken, repeating step 3);
5) by zinc sulfate, water reducer, organobentonite thickening auxiliary rheological agents, swelling agent, ether of cellulose, latex powder in predetermined weight ratio premix evenly, stirrer is sent into;
6) cement to be weighed feeding stirrer;
7) frostproofer to be weighed feeding stirrer, after stirring, namely obtain antifreeze dry-mixed mortar.
Compared with prior art, the invention has the beneficial effects as follows: utilize mine tailing to substitute the admixture such as natural sand, interpolation frostproofer and prepare mortar, reduce natural sand to use, reduce tailings discharging, not only accomplish utilization of waste material but also achieve energy-conserving and environment-protective, also solve mortar winter construction simultaneously and use that workability is poor, the poor problem of anti-freezing property, extend the winter construction activity duration.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, but protection domain not thereby limiting the invention.
In following examples, if no special instructions, component ratio all refers to weight ratio.
[embodiment 1]
Dry-mixed plastering mortar, adaptive temperature: 5 DEG C ~-5 DEG C, component formula part by weight: cement 17, mine tailing aggregate 70, natural sand 9, zinc sulfate 5, naphthalene system pulvis water reducer 1, organobentonite thickening auxiliary rheological agents 1 (production of Zhejiang Qing Hong novel material company limited), swelling agent 1.5 (mixing of 1:1 part by weight pressed by calcium oxide swelling agent and iron filings swelling agent), ether of cellulose 2, latex powder 2, frostproofer 1.05 (calcium nitrite, ethylene glycol are by the mixing of 1:1 part by weight).Preparation method is as follows:
1) by tail ore reduction, be dried to water ratio below 0.5%, sieve, the particle of >=4.75mm sends into crusher, and remaining is sent into sieve apparatus classification and to weigh feeding stirrer, and the following particle of control 0.2mm is less than 15%;
2) mine tailing of crusher >=4.75mm is admitted to through again broken, repeating step 1);
3) natural sand is dried to water ratio below 0.5%, sieves, the particle of >=4.75mm sends into crusher, and remaining sends into stirrer;
4) natural sand of crusher >=4.75mm is admitted to through again broken, repeating step 3);
5) by zinc sulfate, water reducer, organobentonite thickening auxiliary rheological agents, swelling agent, ether of cellulose, latex powder in predetermined weight ratio premix evenly, stirrer is sent into;
6) cement to be weighed feeding stirrer;
7) frostproofer to be weighed feeding stirrer, after stirring, namely obtain antifreeze dry-mixed mortar.Denseness 90-100, amount of water 16-19%.
[embodiment 2]
Dry-mixed masonry mortar, adaptive temperature :-5 DEG C ~-10 DEG C, component formula comprises the component of following weight: cement 20, mine tailing aggregate 70, natural sand 10, zinc sulfate 6, naphthalene system pulvis water reducer 2, organobentonite thickening auxiliary rheological agents 1.5, alum swelling agent 1.5, ether of cellulose 1, latex powder 2, Sodium Nitrite frostproofer 1.4; Preparation method is as follows:
1) by tail ore reduction, be dried to water ratio below 0.5%, sieve, the particle of >=4.75mm sends into crusher, and remaining is sent into sieve apparatus classification and to weigh feeding stirrer, and the following particle of control 0.2mm is less than 15%;
2) mine tailing of crusher >=4.75mm is admitted to through again broken, repeating step 1);
3) natural sand is dried to water ratio below 0.5%, sieves, the particle of >=4.75mm sends into crusher, and remaining sends into stirrer;
4) natural sand of crusher >=4.75mm is admitted to through again broken, repeating step 3);
5) by zinc sulfate, water reducer, organobentonite thickening auxiliary rheological agents, swelling agent, ether of cellulose, latex powder in predetermined weight ratio premix evenly, stirrer is sent into;
6) cement to be weighed feeding stirrer;
7) frostproofer to be weighed feeding stirrer, namely obtain antifreeze dry-mixed masonry mortar after stirring, denseness 70-80, amount of water 14-16%.
[embodiment 3]
Dry-mixed masonry mortar, adaptive temperature :-10 DEG C ~-15 DEG C, comprises the component of following weight: cement 18, mine tailing aggregate 60, natural sand 15, zinc sulfate 10, poly-hydroxy acid pulvis water reducer 1.5, organobentonite thickening auxiliary rheological agents 1.5, swelling agent 1 (calcium oxide swelling agent and iron filings swelling agent by weight proportion 1:1 are mixed), ether of cellulose 1.5, latex powder 2, Sodium Nitrite frostproofer 1.2; Preparation method is as follows:
1) by tail ore reduction, be dried to water ratio below 0.5%, sieve, the particle of >=4.75mm sends into crusher, and remaining is sent into sieve apparatus classification and to weigh feeding stirrer, and the following particle of control 0.2mm is less than 15%;
2) mine tailing of crusher >=4.75mm is admitted to through again broken, repeating step 1);
3) natural sand is dried to water ratio below 0.5%, sieves, the particle of >=4.75mm sends into crusher, and remaining sends into stirrer;
4) natural sand of crusher >=4.75mm is admitted to through again broken, repeating step 3);
5) by zinc sulfate, water reducer, organobentonite thickening auxiliary rheological agents, swelling agent, ether of cellulose, latex powder in predetermined weight ratio premix evenly, stirrer is sent into;
6) cement to be weighed feeding stirrer;
7) frostproofer to be weighed feeding stirrer, namely obtain antifreeze dry-mixed masonry mortar after stirring, denseness 70-80, amount of water 14-16%.
[embodiment 4]
Dry-mixed plastering mortar, adaptive temperature :-15 DEG C ~-20 DEG C, component formula: cement 17, mine tailing aggregate 65, natural sand 14, zinc sulfate 8, poly-hydroxy acid pulvis water reducer 1, organobentonite thickening auxiliary rheological agents 1, swelling agent 1.5 (calcium oxide swelling agent and iron filings swelling agent by weight proportion 1:1 are mixed), ether of cellulose 2, latex powder 2, frostproofer 1.4 (Sodium Nitrite frostproofer and calcium nitrite frostproofer 1:1 part by weight).
Preparation method is as follows:
1) by tail ore reduction, be dried to water ratio below 0.5%, sieve, the particle of >=4.75mm sends into crusher, and remaining is sent into sieve apparatus classification and to weigh feeding stirrer, and the following particle of control 0.2mm is less than 15%;
2) mine tailing of crusher >=4.75mm is admitted to through again broken, repeating step 1);
3) natural sand is dried to water ratio below 0.5%, sieves, the particle of >=4.75mm sends into crusher, and remaining sends into stirrer;
4) natural sand of crusher >=4.75mm is admitted to through again broken, repeating step 3);
5) by zinc sulfate, water reducer, organobentonite thickening auxiliary rheological agents, swelling agent, ether of cellulose, latex powder in predetermined weight ratio premix evenly, stirrer is sent into;
6) cement to be weighed feeding stirrer;
7) frostproofer to be weighed feeding stirrer, namely obtain antifreeze dry-mixed plastering mortar after stirring, denseness 90-100, amount of water 17-19%.
Measure the performance perameter of antifreeze dry-mixed mortar described in embodiment 1-4: the measuring method of cohesive strength, shrinking percentage, 28d ultimate compression strength adopts this area ordinary method to measure, and measurement result is in table 1.
Table 1, the performance perameter of antifreeze dry-mixed mortar described in embodiment 1-4
Claims (2)
1. an antifreeze dry-mixed mortar, it is characterized in that, comprise the component of following weight: cement 15-20, mine tailing aggregate 50-70, natural sand 10-15, zinc sulfate 5-10, water reducer 1-2, organobentonite thickening auxiliary rheological agents 1-1.5, swelling agent 1-1.5, ether of cellulose 1-2, latex powder 1-2, frostproofer 1.05-1.4;
Described cement is ordinary Portland cement, silicate cement, Portland blast furnace slag cement, Portland fly ash cement, and strength grade is 32.5 or 42.5;
Described mine tailing aggregate is for forming by producing mine tailing stone in ore extraction and ore dressing process through broken classification, and its fineness modulus is 1.6-2.3, and wherein below 0.2mm particle is less than 15%;
Described natural sand fineness modulus is 1.6-2.3, and apparent density is greater than 2200Kg/m
3, silt content is less than 1.0%;
Wherein, water reducer is the mixture of one or more of poly-hydroxy acid pulvis water reducer, naphthalene system pulvis water reducer and aliphatics pulvis water reducer; Swelling agent is the mixture of one or more of UEA swelling agent, alum swelling agent, calcium oxide swelling agent and iron filings swelling agent; Ether of cellulose is one or both mixtures of methyl cellulose ether and hydroxypropyl methyl cellulose ether; Described frostproofer is the mixture of one or more of Sodium Nitrite, carbonate, calcium chloride, calcium nitrite, ethylene glycol.
2. the preparation method of a kind of antifreeze dry-mixed mortar according to claim 1, is characterized in that, comprise the following steps:
1) by tail ore reduction, be dried to water ratio below 0.5%, sieve, the particle of >=4.75mm sends into crusher, and remaining is sent into sieve apparatus classification and to weigh feeding stirrer, and the following particle of control 0.2mm is less than 15%;
2) mine tailing of crusher >=4.75mm is admitted to through again broken, repeating step 1);
3) natural sand is dried to water ratio below 0.5%, sieves, the particle of >=4.75mm sends into crusher, and remaining sends into stirrer;
4) natural sand of crusher >=4.75mm is admitted to through again broken, repeating step 3);
5) by zinc sulfate, water reducer, organobentonite thickening auxiliary rheological agents, swelling agent, ether of cellulose, latex powder in predetermined weight ratio premix evenly, stirrer is sent into;
6) cement to be weighed feeding stirrer;
7) frostproofer to be weighed feeding stirrer, after stirring, namely obtain antifreeze dry-mixed mortar.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105384405A (en) * | 2015-11-16 | 2016-03-09 | 中国三冶集团有限公司 | Method for preparing anti-freezing concrete |
| CN107986660A (en) * | 2017-12-25 | 2018-05-04 | 辽宁好利置业有限公司 | Environment-friendly novel antifreezing agent |
| CN109020456A (en) * | 2018-08-25 | 2018-12-18 | 北京建工新型建材有限责任公司 | A kind of Machine-made Sand dry-mixed mortar and preparation method thereof |
| CN109336505A (en) * | 2018-10-31 | 2019-02-15 | 广西驰胜农业科技有限公司 | One kind is freeze proof to split mortar and preparation method thereof |
| CN110418830A (en) * | 2017-03-20 | 2019-11-05 | 通用电气(Ge)贝克休斯有限责任公司 | Viscosity modifier and its application method |
| CN116924826A (en) * | 2023-07-26 | 2023-10-24 | 江苏坤泽科技股份有限公司 | High-strength antifreezing silt solidified light soil and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603248A (en) * | 2012-03-23 | 2012-07-25 | 北京建筑工程学院 | Tailing sand mortar dry blend and mortar preparation method thereby |
| CN104072004A (en) * | 2014-07-11 | 2014-10-01 | 北京博润佳科技有限公司 | Antifreeze agent for mortar |
| CN104529337A (en) * | 2015-01-12 | 2015-04-22 | 杭州绿怡新型建材有限公司 | Post-tensioned prestressed concrete beam duct grouting material of highway bridge and preparation method thereof |
-
2015
- 2015-07-13 CN CN201510407571.1A patent/CN105036667B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603248A (en) * | 2012-03-23 | 2012-07-25 | 北京建筑工程学院 | Tailing sand mortar dry blend and mortar preparation method thereby |
| CN104072004A (en) * | 2014-07-11 | 2014-10-01 | 北京博润佳科技有限公司 | Antifreeze agent for mortar |
| CN104529337A (en) * | 2015-01-12 | 2015-04-22 | 杭州绿怡新型建材有限公司 | Post-tensioned prestressed concrete beam duct grouting material of highway bridge and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105384405A (en) * | 2015-11-16 | 2016-03-09 | 中国三冶集团有限公司 | Method for preparing anti-freezing concrete |
| CN110418830A (en) * | 2017-03-20 | 2019-11-05 | 通用电气(Ge)贝克休斯有限责任公司 | Viscosity modifier and its application method |
| CN107986660A (en) * | 2017-12-25 | 2018-05-04 | 辽宁好利置业有限公司 | Environment-friendly novel antifreezing agent |
| CN109020456A (en) * | 2018-08-25 | 2018-12-18 | 北京建工新型建材有限责任公司 | A kind of Machine-made Sand dry-mixed mortar and preparation method thereof |
| CN109336505A (en) * | 2018-10-31 | 2019-02-15 | 广西驰胜农业科技有限公司 | One kind is freeze proof to split mortar and preparation method thereof |
| CN116924826A (en) * | 2023-07-26 | 2023-10-24 | 江苏坤泽科技股份有限公司 | High-strength antifreezing silt solidified light soil and preparation method thereof |
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| CN105036667B (en) | 2017-12-26 |
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