CN103121814A - Lightweight concrete and preparation method and applications thereof - Google Patents
Lightweight concrete and preparation method and applications thereof Download PDFInfo
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- CN103121814A CN103121814A CN2013100571018A CN201310057101A CN103121814A CN 103121814 A CN103121814 A CN 103121814A CN 2013100571018 A CN2013100571018 A CN 2013100571018A CN 201310057101 A CN201310057101 A CN 201310057101A CN 103121814 A CN103121814 A CN 103121814A
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Abstract
The invention discloses a lightweight concrete and a preparation method and applications thereof. The lightweight concrete is composed of raw materials such as cement, industrial waste residues, lightweight aggregates, a water reducing agent, water, an exciting agent and a polymer emulsion. The preparation method comprises the steps of carrying out surface treatment, mixing and stirring and the like on the raw materials. The lightweight concrete prepared by using the method disclosed by the invention can be used for being prepared into lightweight concrete blocks, because lightweight aggregates subjected to surface treatment and industrial waste residues subjected to activation are adopted in the production process of the lightweight concrete disclosed by the invention, and a specific polymer emulsion composed of a curing agent and resins is added, lightweight concrete blocks have the advantages of high strength and high toughness, and the weights of the lightweight concrete blocks are also reduced. In addition, the lightweight concrete disclosed by the invention also has the advantages of simple preparation method, convenience for operation, easiness for promotion and application.
Description
Technical field
The present invention relates to a kind of light weight concrete and preparation method thereof and use.
Background technology
The normal concrete that uses on construction market at present and concrete segment ubiquity are from the defective such as great, that folding strength is low, poor toughness, heat insulation effect are poor; Some lightweight concrete building blocks, exist ultimate compression strength as air-entrained concrete building block low, folding strength is lower, " materials for wall the use unified technical specifications " requirement (GB50574-2010) that all can not be up to state standards than (or splitting pressure ratio) of the defectives such as poor toughness, their crimping.
in the concrete and concrete segment of selling on market now, there are no the product that has added polymer emulsion, and in existing disclosed patent, there are the polyvinyl acetate of employing and polyacrylic ester to make the report of concrete segment as polymer emulsion, it is destroyed that but polyvinyl acetate is easy under strong alkali environment, unstable, and cement based is the very strong material of alkalescence, so should not adopt polyvinyl acetate as cement-based material, although another kind of polymer emulsion polyacrylic ester can form good luster and water-fast film, have bonding firm, incrust, at room temperature pliable and tough and flexible, the advantage of good weatherability, but its tensile strength is not high, still can not satisfy the user to the high-tensile requirement of concrete segment.
The application is mainly by changing the proportioning of concrete material, aglite is carried out surface modification, particularly added the polymer emulsion of new composition, reduced concrete gravity, improve by a relatively large margin anti-folding and the ultimate compression strength of concrete and concrete segment, make concrete segment satisfy the requirement of doubling pressure ratio in standard (GB50574-2010).
Summary of the invention
The technical problem to be solved in the present invention is: provide that a kind of intensity is higher, toughness is better, lightweight light weight concrete and preparation method thereof and using.
The technical scheme that solves the problems of the technologies described above is: a kind of light weight concrete, it is comprised of following raw material, be by ratio of weight and the number of copies: 50～70 parts of cement, 30～50 parts of industrial residues, 2～5 parts of water reducers, 0.9～4 part of exciting agent, 40～50 parts, water, 0.8～37 part of aglite, 0.3～0.8 part of polymer emulsion.
Described industrial residue is flyash and slag powders; Described water reducer is naphthalene water reducer; Described exciting agent is water glass or sodium sulfate; Described aglite is granular polystyrene or haydite, and by weight for 1:4 takes and mixes, described solidifying agent is T-31 solidifying agent to described polymer emulsion by solidifying agent and resin, and described resin is epoxy resin.
Further technical scheme of the present invention is: a kind of light weight concrete, it is comprised of following raw material, be by ratio of weight and the number of copies: 50～70 parts of cement, 30～50 parts of industrial residues, 2～5 parts of water reducers, 0.9～4 part of exciting agent, 40～50 parts, water, 0.8～3 part of granular polystyrene, 0.3～0.8 part of polymer emulsion.
Further technical scheme of the present invention is: a kind of light weight concrete, and it is comprised of following raw material, is by ratio of weight and the number of copies: 50～70 parts of cement, 30～50 parts of industrial residues, 2～5 parts of water reducers, 0.9～4 part of exciting agent, 40～50 parts, water, 10～37 parts of haydites, 0.3～0.8 part of polymer emulsion.
Another technical scheme of the present invention is: a kind of preparation method of light weight concrete comprises the steps:
A. take by ratio of weight and the number of copies 50～70 parts of cement, 30～50 parts of industrial residues, 2～5 parts of water reducers, 0.9～4 part of exciting agent, 40～50 parts, water, 0.8～37 part of aglite, 0.3～0.8 part of polymer emulsion;
B. the aglite that takes in steps A is carried out surface treatment;
C. polymer emulsion, exciting agent, the water reducer dispersing and dissolving that takes in steps A obtained the mixture I in water, pour surface-treated aglite in cement, industrial residue and the step B that takes in steps A in the mixture I, stirring obtains a kind of light weight concrete;
Wherein, described industrial residue is flyash and slag powders; Described water reducer is naphthalene water reducer; Described exciting agent is water glass or sodium sulfate; Described aglite is granular polystyrene or haydite, and by weight for 1:4 takes and mixes, described solidifying agent is T-31 solidifying agent to described polymer emulsion by solidifying agent and resin, and described resin is epoxy resin.
Described aglite is granular polystyrene, the concrete operation step of step B is: with the trolamine of the granular polystyrene quality 6% trolamine aqueous solution that obtains soluble in water, the trolamine aqueous solution is sprayed at the granular polystyrene surface uniformly, add again and granular polystyrene can be wrapped up cement completely, stir, complete and make shell; Wherein, the consumption of the required water of the preparation trolamine aqueous solution is can the granular polystyrene surface is fully moistening.
Described aglite is haydite, and the concrete operation step of step B is: be that 0.4 cement paste stirs with haydite and water cement ratio, complete and make shell, the consumption of described cement paste is for wrapping up haydite fully.
In described steps A, take by ratio of weight and the number of copies 50～70 parts of cement, 30～50 parts of industrial residues, 2～5 parts of water reducers, 0.9～4 part of exciting agent, 40～50 parts, water, 0.8～3 part of granular polystyrene, 0.3～0.8 part of polymer emulsion.
In described steps A, take by ratio of weight and the number of copies 50～70 parts of cement, 30～50 parts of industrial residues, 2～5 parts of water reducers, 0.9～4 part of exciting agent, 40～50 parts, water, 10～37 parts of haydites, 0.3～0.8 part of polymer emulsion.
Another technical scheme of the present invention is: a kind of application of light weight concrete, this concrete is for the preparation of lightweight concrete building block.
Owing to adopting technique scheme, a kind of light weight concrete of the present invention and preparation method thereof and application have following beneficial effect:
1. intensity is high, toughness is high:
Aglite and polymer emulsion have been added in the concrete that the present invention is prepared into and concrete segment, in preparation method of the present invention, aglite is carried out surface modification, to improve the interfacial adhesion between itself and cement, the concrete that is prepared into the present invention is prepared into concrete segment, and intensity is high; And the exciting agent that adds in the present invention has the effect of stimulating activity to industrial residue, has also improved the intensity of concrete segment; Added polymer emulsion in the stirring moulding process of concrete segment, be used for improving folding strength and the ultimate compression strength of concrete segment, improved the crimping ratio of concrete segment, improved the toughness of concrete segment, thereby be conducive to improve structural seismic performance.
The experiment proved that: aglite is compared with check sample after surface modification, and concrete and concrete segment ultimate compression strength improve can reach 20～60%, and folding strength improves can reach 20～40%; After adding polymer emulsion, concrete segment folding strength raising 50～60%, ultimate compression strength can improve 20～40%.
2. lightweight:
The present invention is on the basis of normal concrete and concrete segment, with the stone (coarse aggregate) in surface treated aglite replacement concrete, has alleviated the weight of concrete and concrete segment, and its dry apparent density is at 1000 ~ 1300 kg/m
3The left and right, thus the especially deadweight of Highrise buildings of buildings reduced, reduce building cost.
3. good heat insulating:
Concrete of the present invention and concrete segment are owing to adding surface treated aglite, and its heat-insulating property is significantly improved than normal concrete and concrete segment, thereby is conducive to building energy conservation.
4. preparation method of the present invention is simple, and is easy to operate, is convenient to promote the use of.
Description of drawings
Fig. 1: the preparation method's of a kind of light weight concrete of the embodiment of the present invention one process flow sheet.
Fig. 2: the preparation method's of a kind of light weight concrete of the embodiment of the present invention seven process flow sheet.
Embodiment:
Embodiment one:
A kind of light weight concrete, it is comprised of following raw material, be by ratio of weight and the number of copies: 50 parts of cement, 25 parts, flyash, 25 parts of slag powders, 2 parts of naphthalene water reducers, 4 parts, sodium sulfate, 40 parts, water, 0.8 part of granular polystyrene, 0.3 part of polymer emulsion, described polymer emulsion is taken and mixes for 1:4 by weight by T-31 solidifying agent and epoxy resin; This concrete preparation method comprises the following steps:
A. take cement by proportioning, flyash, slag powders, naphthalene water reducer, sodium sulfate, water, granular polystyrene, polymer emulsion;
B. the granular polystyrene that takes in steps A is carried out surface treatment: with the trolamine of the granular polystyrene quality 6% trolamine aqueous solution that obtains soluble in water, with watering can, the trolamine aqueous solution is sprayed at the granular polystyrene surface uniformly, add again and granular polystyrene can be wrapped up cement completely, stir, complete and make shell; Wherein, the consumption of the required water of the preparation trolamine aqueous solution is can the granular polystyrene surface is fully moistening;
C. polymer emulsion, water glass, the naphthalene water reducer dispersing and dissolving that takes in steps A obtained the mixture I in water, pour surface-treated granular polystyrene in cement, flyash, slag powders and the step B that takes in steps A in the mixture I, stirring obtains a kind of light weight concrete.
Embodiment two～embodiment six: a kind of light weight concrete, raw material and the parts by weight of this light weight concrete see also table one, and its preparation method is identical with embodiment one.
Table one:
Embodiment seven:
A kind of light weight concrete, it is comprised of following raw material, be by ratio of weight and the number of copies: 50 parts of cement, 25 parts of slag powders, 25 parts, flyash, 40 parts, water, 2 parts of naphthalene water reducers, 4 parts of water glass, 10 parts of haydites, 0.3 part of polymer emulsion, described polymer emulsion is taken and mixes for 1:4 by weight by T-31 solidifying agent and epoxy resin; This concrete preparation method comprises the following steps:
A. take cement by proportioning, slag powders, flyash, water, naphthalene water reducer, water glass, haydite, polymer emulsion;
B. the haydite that takes in steps A is carried out surface treatment: be that 0.4 cement paste stirs with haydite and water cement ratio, complete and make shell, the consumption of described cement paste is for wrapping up haydite fully;
C. polymer emulsion, water glass, the naphthalene water reducer dispersing and dissolving that takes in steps A obtained the mixture I in water, pour surface-treated haydite in cement, slag powders, flyash and the step B that takes in steps A in the mixture I, stirring obtains a kind of light weight concrete.
Embodiment eight～embodiment 12: a kind of light weight concrete, raw material and the parts by weight of this light weight concrete see also table two, and its preparation method is identical with embodiment seven.
Table two:
Embodiment 13: the application of a kind of light weight concrete of the present invention, namely be prepared into lightweight concrete building block with the light weight concrete that the present invention is prepared into, and the preparation method of this lightweight concrete building block comprises the steps:
D. the light weight concrete that the present invention is prepared is poured mould into and (is of a size of in 240 * 115 * 53mm) vibratory compaction;
E.24 hour after, step D is carried out the demoulding;
F. the lightweight concrete building block after the demoulding that obtains in step e being positioned over temperature is 20 ± 2 ℃, and humidity is to carry out maintenance in standard curing room more than 95%, and maintenance 28 days obtains the concrete segment of high-strength light high tenacity.
The ultimate compression strength of the lightweight concrete building block that the present invention makes is that 3.5～10MPa, folding strength are about about 0. 5 ~ 2.0 MPa.
As a kind of conversion of embodiment 13, light weight concrete of the present invention can also be for the preparation of the lightweight insulating concrete plate.
Claims (10)
1. light weight concrete, it is characterized in that: it is comprised of following raw material, is by ratio of weight and the number of copies: 50～70 parts of cement, 30～50 parts of industrial residues, 2～5 parts of water reducers, 0.9～4 part of exciting agent, 40～50 parts, water, 0.8～37 part of aglite, 0.3～0.8 part of polymer emulsion.
2. a kind of light weight concrete according to claim 1, it is characterized in that: described industrial residue is flyash and slag powders; Described water reducer is naphthalene water reducer; Described exciting agent is water glass or sodium sulfate; Described aglite is granular polystyrene or haydite, and by weight for 1:4 takes and mixes, described solidifying agent is T-31 solidifying agent to described polymer emulsion by solidifying agent and resin, and described resin is epoxy resin.
3. a kind of light weight concrete according to claim 2, it is characterized in that: it is comprised of following raw material, be by ratio of weight and the number of copies: 50～70 parts of cement, 30～50 parts of industrial residues, 2～5 parts of water reducers, 0.9～4 part of exciting agent, 40～50 parts, water, 0.8～3 part of granular polystyrene, 0.3～0.8 part of polymer emulsion.
4. a kind of light weight concrete according to claim 2, it is characterized in that: it is comprised of following raw material, be by ratio of weight and the number of copies: 50～70 parts of cement, 30～50 parts of industrial residues, 2～5 parts of water reducers, 0.9～4 part of exciting agent, 40～50 parts, water, 10～37 parts of haydites, 0.3～0.8 part of polymer emulsion.
5. the preparation method of a light weight concrete, is characterized in that: comprise the steps:
A. take by ratio of weight and the number of copies 50～70 parts of cement, 30～50 parts of industrial residues, 2～5 parts of water reducers, 0.9～4 part of exciting agent, 40～50 parts, water, 0.8～37 part of aglite, 0.3～0.8 part of polymer emulsion;
B. the aglite that takes in steps A is carried out surface treatment;
C. polymer emulsion, exciting agent, the water reducer dispersing and dissolving that takes in steps A obtained the mixture I in water, pour surface-treated aglite in cement, industrial residue and the step B that takes in steps A in the mixture I, stirring obtains a kind of light weight concrete;
Wherein, described industrial residue is flyash and slag powders; Described water reducer is naphthalene water reducer; Described exciting agent is water glass or sodium sulfate; Described aglite is granular polystyrene or haydite, and by weight for 1:4 takes and mixes, described solidifying agent is T-31 solidifying agent to described polymer emulsion by solidifying agent and resin, and described resin is epoxy resin.
6. the preparation method of a kind of light weight concrete according to claim 5, it is characterized in that: described aglite is granular polystyrene, the concrete operation step of step B is: with the trolamine of the granular polystyrene quality 6% trolamine aqueous solution that obtains soluble in water, the trolamine aqueous solution is sprayed at the granular polystyrene surface uniformly, add again and granular polystyrene can be wrapped up cement completely, stir, complete and make shell; Wherein, the consumption of the required water of the preparation trolamine aqueous solution is can the granular polystyrene surface is fully moistening.
7. the preparation method of a kind of light weight concrete according to claim 5, it is characterized in that: described aglite is haydite, the concrete operation step of step B is: be that 0.4 cement paste stirs with haydite and water cement ratio, complete and make shell, the consumption of described cement paste is for wrapping up haydite fully.
8. the preparation method of a kind of light weight concrete according to claim 6, it is characterized in that: in described steps A, take by ratio of weight and the number of copies 50～70 parts of cement, 30～50 parts of industrial residues, 2～5 parts of water reducers, 0.9～4 part of exciting agent, 40～50 parts, water, 0.8～3 part of granular polystyrene, 0.3～0.8 part of polymer emulsion.
9. the preparation method of a kind of light weight concrete according to claim 7, it is characterized in that: in described steps A, take by ratio of weight and the number of copies 50～70 parts of cement, 30～50 parts of industrial residues, 2～5 parts of water reducers, 0.9～4 part of exciting agent, 40～50 parts, water, 10～37 parts of haydites, 0.3～0.8 part of polymer emulsion.
10. application as the described light weight concrete of claim 1-4 any one, it is characterized in that: this concrete is for the preparation of lightweight concrete building block.
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| CN103755253A (en) * | 2013-12-25 | 2014-04-30 | 广西科技大学 | Novel concrete |
| CN103755252A (en) * | 2013-12-25 | 2014-04-30 | 广西科技大学 | Novel concrete and preparation method thereof |
| CN103787621A (en) * | 2013-12-17 | 2014-05-14 | 陕西理工学院 | Geopolymer-polymer composite board and preparation method thereof |
| CN103787633A (en) * | 2013-12-25 | 2014-05-14 | 广西科技大学 | Organic polymer modified concrete building block and preparation method thereof |
| CN103803874A (en) * | 2013-12-25 | 2014-05-21 | 广西科技大学 | Novel concrete and preparation method thereof |
| CN103819157A (en) * | 2013-12-25 | 2014-05-28 | 广西科技大学 | Novel concrete |
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| CN104478340A (en) * | 2014-12-23 | 2015-04-01 | 苏州万盛混凝土有限公司 | Low-cost concrete preparation method |
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| CN105712672A (en) * | 2016-02-03 | 2016-06-29 | 陈翔 | Lightweight concrete |
| CN107235681A (en) * | 2017-06-14 | 2017-10-10 | 宁波普利凯建筑科技有限公司 | Self heat insulation wall haydite concrete and preparation method thereof |
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| US10882791B2 (en) | 2018-09-28 | 2021-01-05 | King Fahd University Of Petroleum And Minerals | High performance concretes and methods of making thereof |
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| CN103787621B (en) * | 2013-12-17 | 2015-10-28 | 陕西理工学院 | A kind of ground polymers-polymkeric substance composite sheet and preparation method thereof |
| CN103787633A (en) * | 2013-12-25 | 2014-05-14 | 广西科技大学 | Organic polymer modified concrete building block and preparation method thereof |
| CN103803874A (en) * | 2013-12-25 | 2014-05-21 | 广西科技大学 | Novel concrete and preparation method thereof |
| CN103819157A (en) * | 2013-12-25 | 2014-05-28 | 广西科技大学 | Novel concrete |
| CN103755252A (en) * | 2013-12-25 | 2014-04-30 | 广西科技大学 | Novel concrete and preparation method thereof |
| CN103755253A (en) * | 2013-12-25 | 2014-04-30 | 广西科技大学 | Novel concrete |
| CN104496306A (en) * | 2014-12-08 | 2015-04-08 | 青阳县天工预拌商品砂浆有限公司 | Anti-crack concrete and preparation method thereof |
| CN104446229A (en) * | 2014-12-23 | 2015-03-25 | 苏州万盛混凝土有限公司 | Low-cost concrete |
| CN104478340A (en) * | 2014-12-23 | 2015-04-01 | 苏州万盛混凝土有限公司 | Low-cost concrete preparation method |
| CN105712672A (en) * | 2016-02-03 | 2016-06-29 | 陈翔 | Lightweight concrete |
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| CN109553369A (en) * | 2017-09-27 | 2019-04-02 | 张良 | A kind of silicon substrate heat preservation decoration integrative brick and its production method |
| CN108437189A (en) * | 2018-04-11 | 2018-08-24 | 武汉理工大学 | A kind of former and technique of interface enhancing lightweight concrete |
| US10882791B2 (en) | 2018-09-28 | 2021-01-05 | King Fahd University Of Petroleum And Minerals | High performance concretes and methods of making thereof |
| CN109608100A (en) * | 2018-12-04 | 2019-04-12 | 陈群 | A kind of concrete self-insulating composite lightweight block and its production technology |
| CN109704673A (en) * | 2019-01-03 | 2019-05-03 | 温州市艺都装潢有限公司 | A kind of exterior wall environment-friendly insulating material |
| CN109704673B (en) * | 2019-01-03 | 2021-08-24 | 温州市艺都装潢有限公司 | Environment-friendly heat-insulating material for external wall |
| CN113149553A (en) * | 2020-08-10 | 2021-07-23 | 河海大学 | Light heat-preservation high-strength concrete and preparation method thereof |
| CN111960782A (en) * | 2020-08-24 | 2020-11-20 | 杭州五友建材有限公司 | Environment-friendly lightweight concrete prepared from waste sintered bricks and tiles and preparation method thereof |
| CN113173722A (en) * | 2021-03-31 | 2021-07-27 | 恒尊集团有限公司 | Sintering-free lightweight aggregate, preparation method thereof and lightweight concrete |
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| CN113603381A (en) * | 2021-09-17 | 2021-11-05 | 哈尔滨工业大学（深圳） | Cement shell-making sludge ceramsite and preparation method and application thereof |
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