CN105036667B - A kind of preparation method of antifreeze dry-mixed mortar - Google Patents

A kind of preparation method of antifreeze dry-mixed mortar Download PDF

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Publication number
CN105036667B
CN105036667B CN201510407571.1A CN201510407571A CN105036667B CN 105036667 B CN105036667 B CN 105036667B CN 201510407571 A CN201510407571 A CN 201510407571A CN 105036667 B CN105036667 B CN 105036667B
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sent
mixer
cement
mortar
natural sand
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CN105036667A (en
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张来壮
李泽杰
冯永德
谷晓峰
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ANSHAN SANYE CONSTRUCTION ENGINEERING Co Ltd
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ANSHAN SANYE CONSTRUCTION ENGINEERING Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The present invention relates to a kind of comprehensive utilization technique of building material field, more particularly to a kind of preparation method of antifreeze dry-mixed mortar, include the component of following weight:Cement 15 20, mine tailing aggregate 50 70, natural sand 10 15, zinc sulfate 5 10, water reducer 12, organobentonite thickening auxiliary rheological agents 1 1.5, swelling agent 1 1.5, cellulose ether 12, latex powder 12, antifreezing agent 1.05 1.4;Compared with prior art, the beneficial effects of the invention are as follows:The additives such as natural sand, addition antifreezing agent, which are substituted, using mine tailing prepares mortar, natural sand is reduced to use, reduce tailings discharging, not only accomplish twice laid but also realize energy-conserving and environment-protective, mortar winter construction is also solved the problems, such as simultaneously using workability is poor, anti-freezing property difference, extends the winter construction activity duration.

Description

A kind of preparation method of antifreeze dry-mixed mortar
Technical field
The present invention relates to a kind of comprehensive utilization technique of building material field, more particularly to a kind of antifreeze dry-mixed mortar Preparation method.
Background technology
In the realm of building construction, mortar is a kind of very big construction material of usage amount, and preparing mortar needs to consume largely Natural sand.China is big steel country, and iron ore produces discarded object --- the mine tailing very abundant of smart iron powder based on lean ore, It, which discharges typically to concentrate using tailing dam (storehouse), stacks, not only land occupation, and pollute environment.Natural sand is substituted using mine tailing It is a kind of not only twice laid but also the comprehensive utilization technique of energy-conserving and environment-protective to prepare mortar technology.Construction optimum temperature 5 DEG C with On, and require that mortar must be with early strong, antifreeze, freeze proof, anticorrosive in the northern area of China, winter time length, cold snap The multiple performances such as property, to adapt to construction of the mortar under low temperature, subzero temperature.
The content of the invention
To overcome prior art defect, present invention solves the technical problem that being to provide a kind of preparation side of antifreeze dry-mixed mortar Method, substitute the additives such as natural sand, addition antifreezing agent using mine tailing and prepare mortar, reduce natural sand and use, reduce tailings discharging, Not only accomplish twice laid but also realized energy-conserving and environment-protective, while also solve mortar winter construction using workability is poor, frost resistance The poor problem of energy, extends the winter construction activity duration.
In order to achieve the above object, the present invention is realized using following technical scheme:
A kind of antifreeze dry-mixed mortar, it is characterised in that include the component of following weight:Cement 15-20, mine tailing aggregate 50- 70th, 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, Cellulose ether 1-2, latex powder 1-2, antifreezing agent 1.05-1.4;
The cement is Portland cement, portland cement, portland slag cement, Portland fly ash cement, Strength grade is 32.5 or 42.5;
The mine tailing aggregate is to be formed by producing tailings stone in ore extraction and ore dressing process through broken classification, its fineness mould Number is 1.6-2.3, and wherein below 0.2mm particles are less than 15%;
The natural grain fineness number modulus is 1.6-2.3, and apparent density is more than 2200Kg/m3, clay content is less than 1.0%;
Wherein, water reducer is one kind of poly- hydroxy acid pulvis water reducer, naphthalene system pulvis water reducer and aliphatic pulvis water reducer Or several mixture;Swelling agent be UEA swelling agents, alum swelling agent, calcium oxide swelling agent and iron filings swelling agent one kind or Several mixtures;Cellulose ether is one or two kinds of mixtures of methyl cellulose ether and hydroxypropyl methyl cellulose ether;Institute Antifreezing agent is stated as natrium nitrosum, carbonate, calcium chloride, calcium nitrite, one or more of mixtures of ethylene glycol.
A kind of preparation method of described antifreeze dry-mixed mortar, comprises the following steps:
1) tailings stone being crushed, dried to moisture content below 0.5%, sieving, >=4.75mm particle is sent into disintegrating machine, Remaining is sent into screening machine and is classified feeding mixer of weighing, and control below 0.2mm particles are less than 15%;
2) disintegrating machine >=4.75mm mine tailing is admitted to through crushing again, repeat step 1);
3) by natural sand drying to moisture content below 0.5%, sieving, >=4.75mm particle is sent into disintegrating machine, remaining Feeding mixer;
4) disintegrating machine >=4.75mm natural sand is admitted to through crushing again, repeat step 3);
5) zinc sulfate, water reducer, organobentonite are thickened into auxiliary rheological agents, swelling agent, cellulose ether, latex powder by regulation Part by weight premix is uniform, is sent into mixer;
6) cement is weighed and is sent into mixer;
7) antifreezing agent is weighed and is sent into mixer, antifreeze dry-mixed mortar is produced after stirring.
Compared with prior art, the beneficial effects of the invention are as follows:It is additional that natural sand, addition antifreezing agent etc. are substituted using mine tailing Agent prepares mortar, reduces natural sand and uses, reduces tailings discharging, not only accomplished twice laid but also realized energy-conserving and environment-protective, simultaneously Also solve the problems, such as mortar winter construction using workability is poor, anti-freezing property difference, extend the winter construction activity duration.
Embodiment
With reference to specific embodiment, the invention will be further described, but protection model not thereby limiting the invention Enclose.
In following examples, unless otherwise specified, component ratio refers both 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, day Right sand 9, zinc sulfate 5, naphthalene system pulvis water reducer 1, organobentonite thickening auxiliary rheological agents 1 (Zhejiang Qing Hong new materials Co., Ltd Production), (calcium oxide swelling agent and iron filings swelling agent press 1 to swelling agent 1.5:1 part by weight mix), cellulose ether 2, latex powder 2, (calcium nitrite, ethylene glycol press 1 to antifreezing agent 1.05:1 part by weight mixes).Preparation method is as follows:
1) tailings stone being crushed, dried to moisture content below 0.5%, sieving, >=4.75mm particle is sent into disintegrating machine, Remaining is sent into screening machine and is classified feeding mixer of weighing, and control below 0.2mm particles are less than 15%;
2) disintegrating machine >=4.75mm mine tailing is admitted to through crushing again, repeat step 1);
3) by natural sand drying to moisture content below 0.5%, sieving, >=4.75mm particle is sent into disintegrating machine, remaining Feeding mixer;
4) disintegrating machine >=4.75mm natural sand is admitted to through crushing again, repeat step 3);
5) zinc sulfate, water reducer, organobentonite are thickened into auxiliary rheological agents, swelling agent, cellulose ether, latex powder by regulation Part by weight premix is uniform, is sent into mixer;
6) cement is weighed and is sent into mixer;
7) antifreezing agent is weighed and is sent into mixer, antifreeze dry-mixed mortar is produced after stirring.Denseness 90-100, amount of water 16- 19%.
【Embodiment 2】
Dry-mixed masonry mortar, adaptive temperature:- 5 DEG C~-10 DEG C, component formula includes 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 are swollen Swollen dose 1.5, cellulose ether 1, latex powder 2, natrium nitrosum antifreezing agent 1.4;Preparation method is as follows:
1) tailings stone being crushed, dried to moisture content below 0.5%, sieving, >=4.75mm particle is sent into disintegrating machine, Remaining is sent into screening machine and is classified feeding mixer of weighing, and control below 0.2mm particles are less than 15%;
2) disintegrating machine >=4.75mm mine tailing is admitted to through crushing again, repeat step 1);
3) by natural sand drying to moisture content below 0.5%, sieving, >=4.75mm particle is sent into disintegrating machine, remaining Feeding mixer;
4) disintegrating machine >=4.75mm natural sand is admitted to through crushing again, repeat step 3);
5) zinc sulfate, water reducer, organobentonite are thickened into auxiliary rheological agents, swelling agent, cellulose ether, latex powder by regulation Part by weight premix is uniform, is sent into mixer;
6) cement is weighed and is sent into mixer;
7) antifreezing agent is weighed and is sent into mixer, antifreeze dry-mixed masonry mortar, denseness 70-80, amount of water are produced after stirring 14-16%.
【Embodiment 3】
Dry-mixed masonry mortar, adaptive temperature:- 10 DEG C~-15 DEG C, include the component of following weight:Cement 18, mine tailing aggregate 60th, natural sand 15, zinc sulfate 10, poly- hydroxy acid pulvis water reducer 1.5, organobentonite thickening the auxiliary rheological agents 1.5, (oxygen of swelling agent 1 Change calcium swelling agent and iron filings swelling agent by weight proportion 1:1 is mixed), cellulose ether 1.5, latex powder 2, natrium nitrosum it is antifreeze Agent 1.2;Preparation method is as follows:
1) tailings stone being crushed, dried to moisture content below 0.5%, sieving, >=4.75mm particle is sent into disintegrating machine, Remaining is sent into screening machine and is classified feeding mixer of weighing, and control below 0.2mm particles are less than 15%;
2) disintegrating machine >=4.75mm mine tailing is admitted to through crushing again, repeat step 1);
3) by natural sand drying to moisture content below 0.5%, sieving, >=4.75mm particle is sent into disintegrating machine, remaining Feeding mixer;
4) disintegrating machine >=4.75mm natural sand is admitted to through crushing again, repeat step 3);
5) zinc sulfate, water reducer, organobentonite are thickened into auxiliary rheological agents, swelling agent, cellulose ether, latex powder by regulation Part by weight premix is uniform, is sent into mixer;
6) cement is weighed and is sent into mixer;
7) antifreezing agent is weighed and is sent into mixer, antifreeze dry-mixed masonry mortar, denseness 70-80, amount of water are produced after stirring 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 14th, 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 is mixed), cellulose ether 2, latex powder 2, antifreezing agent 1.4 (natrium nitrosum antifreezing agent and Calcium nitrite antifreezing agent 1:1 part by weight).
Preparation method is as follows:
1) tailings stone being crushed, dried to moisture content below 0.5%, sieving, >=4.75mm particle is sent into disintegrating machine, Remaining is sent into screening machine and is classified feeding mixer of weighing, and control below 0.2mm particles are less than 15%;
2) disintegrating machine >=4.75mm mine tailing is admitted to through crushing again, repeat step 1);
3) by natural sand drying to moisture content below 0.5%, sieving, >=4.75mm particle is sent into disintegrating machine, remaining Feeding mixer;
4) disintegrating machine >=4.75mm natural sand is admitted to through crushing again, repeat step 3);
5) zinc sulfate, water reducer, organobentonite are thickened into auxiliary rheological agents, swelling agent, cellulose ether, latex powder by regulation Part by weight premix is uniform, is sent into mixer;
6) cement is weighed and is sent into mixer;
7) antifreezing agent is weighed and is sent into mixer, antifreeze dry-mixed plastering mortar, denseness 90-100, amount of water are produced after stirring 17-19%.
Determine the performance parameter of antifreeze dry-mixed mortar described in embodiment 1-4:Adhesion strength, shrinkage factor, 28d compression strength Assay method is determined using this area conventional method, and measurement result is shown in Table 1.
Table 1, the performance parameter of antifreeze dry-mixed mortar described in embodiment 1-4

Claims (1)

  1. A kind of 1. antifreeze dry-mixed plastering mortar, it is characterised in that adaptive temperature:5 DEG C~-5 DEG C, component formula part by weight:Water Mud 17, mine tailing aggregate 70, natural sand 9, zinc sulfate 5, naphthalene system pulvis water reducer 1, organobentonite thickening auxiliary rheological agents 1, expansion Agent 1.5, cellulose ether 2, latex powder 2, antifreezing agent 1.05, described swelling agent press 1 by calcium oxide swelling agent and iron filings swelling agent: 1 part by weight mixes, and the antifreezing agent presses 1 by calcium nitrite, ethylene glycol:1 part by weight mixes;
    The cement is Portland cement, portland cement, portland slag cement, Portland fly ash cement, intensity Grade is 32.5 or 42.5;
    The mine tailing aggregate is to be formed by producing tailings stone in ore extraction and ore dressing process through broken classification, and its modulus of fineness is 1.6-2.3, wherein below 0.2mm particles are less than 15%;
    The natural grain fineness number modulus is 1.6-2.3, and apparent density is more than 2200Kg/m3, clay content is less than 1.0%;
    Wherein, cellulose ether is one or two kinds of mixtures of methyl cellulose ether and hydroxypropyl methyl cellulose ether;
    The preparation method of the antifreeze dry-mixed plastering mortar is as follows:
    1)Tailings stone is crushed, dried to moisture content below 0.5%, sieving, >=4.75mm particle is sent into disintegrating machine, remaining The classification of feeding screening machine weigh and be sent into mixer, control below 0.2mm particles are less than 15%;
    2)Disintegrating machine >=4.75mm mine tailing is admitted to through crushing again, repeat step 1);
    3)By natural sand drying to moisture content below 0.5%, sieving, >=4.75mm particle is sent into disintegrating machine, remaining feeding Mixer;
    4)Disintegrating machine >=4.75mm natural sand is admitted to through crushing again, repeat step 3);
    5)Zinc sulfate, naphthalene system pulvis water reducer, organobentonite thickening auxiliary rheological agents, swelling agent, cellulose ether, latex powder are pressed Predetermined weight ratio premix is uniform, is sent into mixer;
    6)Cement is weighed and is sent into mixer;
    7)Antifreezing agent is weighed and is sent into mixer, antifreeze dry-mixed mortar is produced after stirring.Denseness 90-100, amount of water 16-19%.
CN201510407571.1A 2015-07-13 2015-07-13 A kind of preparation method of antifreeze dry-mixed mortar Active CN105036667B (en)

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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

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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

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