CN102875077A - Sanded self-heat-preservation foamed concrete - Google Patents
Sanded self-heat-preservation foamed concrete Download PDFInfo
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- CN102875077A CN102875077A CN2012103886640A CN201210388664A CN102875077A CN 102875077 A CN102875077 A CN 102875077A CN 2012103886640 A CN2012103886640 A CN 2012103886640A CN 201210388664 A CN201210388664 A CN 201210388664A CN 102875077 A CN102875077 A CN 102875077A
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Abstract
The invention relates to sanded self-heat-preservation foamed concrete for a heat preservation integrated inner and outer wall non-bearing structure of a building structure. The sanded self-heat-preservation foamed concrete consists of quartz sand, cement, silica fume, fibers, additives, hydrogen peroxide, water and glue. In a process of manufacturing the quartz sand, recycled waste micro powder or quartz sand are ground; according to a certain proportion, the cement, the silica fume and the hydrogen peroxide are uniformly mixed to prepare slurry; and a foamed concrete product is prepared by forming, foaming and performing wet and heated maintenance in an agitating pouring die. According to the sanded self-heat-preservation foamed concrete, the waste quartz sand material is fully used, so that the quartz sand is turned into treasure; furthermore, the prepared foamed concrete is high in intensity and low in heat conduction coefficient; and therefore, an energy-saving requirement on self heat preservation of a building is met.
Description
Technical field
The present invention relates to a kind of sand self-heat conserving foamed concrete that adds, belong to a kind of high-strength self-heat conserving construction material field, can be used for the internal partition wall of skeleton construction and the non-load bearing wall of all kinds of buildingss.
Background technology
Along with the fast development of China's economy and the continuous increase of population, the resources and environment constraint becomes increasingly conspicuous, and alleviates inadequate resource, improves the ecological environment, realizes that Sustainable development is a very urgent task.But the building of China also is in the developmental stage of absolute " high-carbon building " at present, show according to National Development and Reform Committee's energy project centre data, the energy consumption of China unit's floor area of building, exterior wall is 4-5 times of developed country substantially, the roof is 2.5 times, and the heating of unit floor area of building and air conditioner load are 2-3 times of developed country.Firmly build section's statistic data and show, nearly 2,000,000,000 square metres of China's annual town and country newly constructed house floor area of building wherein is the highly energy-consuming building more than 80%.Firmly the section of building cooperates national departments concerned at present, is formulating " the green building action plan " of country, and by 2015, the cities and towns new building was carried out and is not less than 65% building energy-saving standard.Encourage 4 municipalities directly under the Central Government such as Beijing and area with good conditionsi to take the lead in implementing energy-conservation 75% standard.Cities and towns new building 95% reaches the requirement of building energy conservation compulsory standard.In new building, only have the use Self-heat-insulating building material, just can avoid the original old road that building highly energy-consuming-reducing energy consumption-manpower and materials consume.
The self-heat conserving building block can not need to carry out the external wall energy-saving transformation, only just can reach the wall heat insulation material of building energy-saving standard requirement by wall structure itself.System compares with external wall outer insulation (or interior insulation), and wall self-insulation system has the characteristics such as low cost, maintenance cost, the variation of outer decoration, long service life.Therefore, take skeleton construction in main various Industrial buildings, covil construction and public building, the heat insulation building block materials for wall certainly will become with its energy-conserving and environment-protective, high-strength light, the comprehensive cost cost is low and overall performance is good advantage the trend of External Walls Heating Insulation future development.
Heat insulation block material has autoclave aerated concrete building block, composite heat insulation block, haydite concrete small-sized hollow building block and foamed concrete heat insulation building block etc. at present.And the foamed concrete heat insulation building block is the environment protecting thermal insulating material that integrates the various performances such as insulation, heat insulation, fire prevention, water resistant, lightweight, sound insulation, is mainly used in the non-bearing heat-preserving body of wall.But the poor stability of present existing foamed concrete, when reducing thermal conductivity, intensity is decrease also after unit weight reduced.
Summary of the invention
The objective of the invention is in order to overcome above-mentioned deficiency, and a kind of sand self-heat conserving foamed concrete that adds that provides, this adds sand self-heat conserving foamed concrete under the prerequisite that guarantees low thermal conductivity, greatly improves the intensity of material, simultaneously also utilize the quartz sand waste material, turn waste into wealth.
A kind of weight percent proportioning that adds sand self-heat conserving foamed concrete composition is respectively: quartz sand 30%-50%, PO42.5 cement 45%-70%, silicon ash 5-10%, 3-12mm polypropylene fibre 0.1-0.4%, admixture 3.0-7.2%, hydrogen peroxide 2.0-10.0%, water-cement ratio 0.45-0.55.
A kind of sand self-heat conserving foamed concrete making method that adds comprises the steps:
A. will discard the quartz sand micro mist, or the natural siliceous sand grinding, 400 mesh sieves crossed;
B. by proportion of composing batching described above, slurrying;
C. the quartz sand after will grinding adds in the slurry of step (b) preparation, stirs 5-10min;
D. add hydrogen peroxide, after stirring, the processing of pouring into a mould and get angry, the rear cutting of resting;
E.45-60 ℃ hydrothermal curing 8h, then room temperature maintenance 3d makes the foamed concrete goods;
The present invention is with the water washing and precipitating micro mist and the recovery dust that produce in the quartz mine course of processing, add in the foamed concrete, the quartz sand mine tailing is turned waste into wealth, silica content is higher in the quartz sand simultaneously, can effectively reduce the calcium silicon ratio of foamed concrete component, be conducive to the formation of hard Calucium Silicate powder, prevent that the Calucium Silicate powder hydrated product is converted into C
2SH, the intensity of raising foamed concrete can under the condition that reduces unit weight and thermal conductivity, not reduce the intensity of material like this.
Embodiment
Embodiment 1
A kind of weight percent proportioning that adds sand self-heat conserving foamed concrete composition is respectively: quartz sand 30%, PO425 cement 65.0%, silicon ash 5.0%, 3-12mm polypropylene fibre 0.4%, water reducer 1.2%, suds-stabilizing agent 0.5%, organosilicon moisture repellent 0.5% and setting accelerator 5.0%, hydrogen peroxide 12.0%, water-cement ratio 0.55.A kind of sand self-heat conserving foamed concrete making method that adds comprises the steps: the quartz sand mine tailing is crossed 400 mesh sieves, by above-mentioned proportion of composing batching, after the slurrying, the quartz sand after grinding is added in the slurry of preparation, stirs 5-10min; Add hydrogen peroxide, after stirring, the processing of pouring into a mould and get angry, the rear cutting of resting; At 45-60 ℃ of hydrothermal curing 8h, then room temperature maintenance 3d makes the foamed concrete goods.The foamed concrete goods ultimate compression strength that makes is 1.0MPa, and thermal conductivity is 0.065W/ (mK), density 300kg/m
3
Embodiment 2
A kind of weight percent proportioning that adds sand self-heat conserving foamed concrete composition is respectively: quartz sand 40%, PO425 cement 52.5%, silicon ash 7.5%, 3-12mm polypropylene fibre 0.2%, water reducer 1.0%, suds-stabilizing agent 0.2%, organosilicon moisture repellent 0.2% and setting accelerator 3.0%, hydrogen peroxide 6.0%, water-cement ratio 0.50.A kind of sand self-heat conserving foamed concrete making method that adds comprises the steps: the quartz sand mine tailing is crossed 400 mesh sieves, by above-mentioned proportion of composing batching, after the slurrying, the quartz sand after grinding is added in the slurry of preparation, stirs 5-10min; Add hydrogen peroxide, after stirring, the processing of pouring into a mould and get angry, the rear cutting of resting; At 45-60 ℃ of hydrothermal curing 8h, then room temperature maintenance 3d makes the foamed concrete goods.The foamed concrete goods ultimate compression strength that makes is 2.5MPa, and thermal conductivity is 0.08W/ (mK), density 400kg/m
3
Embodiment 3
A kind of weight percent proportioning that adds sand self-heat conserving foamed concrete composition is respectively: quartz sand 50%, PO425 cement 40.0%, silicon ash 10.0%, 3-12mm polypropylene fibre 0.4%, water reducer 1.2%, suds-stabilizing agent 0.1%, organosilicon moisture repellent 0.1% and setting accelerator 2.0%, hydrogen peroxide 2.0%, water-cement ratio 0.45.A kind of sand self-heat conserving foamed concrete making method that adds comprises the steps: quartzite sand grind to 400 mesh screen residue is not more than 5%, by above-mentioned proportion of composing batching, after the slurrying, the quartz sand after grinding is added in the slurry of preparation, stirs 5-10min; Add hydrogen peroxide, after stirring, the processing of pouring into a mould and get angry, the rear cutting of resting; At 45-60 ℃ of hydrothermal curing 8h, then room temperature maintenance 3d makes the foamed concrete goods.The foamed concrete goods ultimate compression strength that makes is 5.0MPa, and thermal conductivity is 0.10W/ (mK), density 500kg/m
3
Claims (2)
1. a weight percent proportioning that adds sand self-heat conserving foamed concrete composition is respectively: quartz sand 30%-50%, cement 45%-70%, silicon ash 5%-10%, fiber 0.1%-0.4%, admixture 3.0%-7.2%, hydrogen peroxide 2.0%-10.0%, water-cement ratio 0.45-0.55.
2. a kind of sand self-heat conserving foamed concrete that adds according to claim 1 is characterized in that: quartz sand is the water washing and precipitating micro mist that produces in the quartz mine course of processing and reclaims dust or levigate quartz sand, crosses 400 mesh sieves.Cement is P042.5 cement, and fiber is polypropylene fibre (3-12mm); Admixture comprises the 0.8-1.2% water reducer, 0.1-0.5% suds-stabilizing agent, 0.1-0.5% organosilicon moisture repellent and 2.0-5.0% setting accelerator; Hydrogen peroxide is that content is 35% technical grade hydrogen peroxide; Water is tap water.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103886640A CN102875077A (en) | 2012-10-15 | 2012-10-15 | Sanded self-heat-preservation foamed concrete |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103886640A CN102875077A (en) | 2012-10-15 | 2012-10-15 | Sanded self-heat-preservation foamed concrete |
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| CN102875077A true CN102875077A (en) | 2013-01-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104108895A (en) * | 2014-06-19 | 2014-10-22 | 广东省建筑科学研究院 | Low-density foaming cement and preparation method thereof |
| CN106854902A (en) * | 2016-12-15 | 2017-06-16 | 贵州省建筑材料科学研究设计院有限责任公司 | A kind of quartzy tailings fireproof heated board and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1887781A (en) * | 2006-07-13 | 2007-01-03 | 内蒙古科技大学 | No-shrinkage grouting filler with adjustable performance |
-
2012
- 2012-10-15 CN CN2012103886640A patent/CN102875077A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1887781A (en) * | 2006-07-13 | 2007-01-03 | 内蒙古科技大学 | No-shrinkage grouting filler with adjustable performance |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104108895A (en) * | 2014-06-19 | 2014-10-22 | 广东省建筑科学研究院 | Low-density foaming cement and preparation method thereof |
| CN104108895B (en) * | 2014-06-19 | 2016-05-18 | 广东省建筑科学研究院集团股份有限公司 | A kind of low-density foamed cement and preparation method thereof |
| CN106854902A (en) * | 2016-12-15 | 2017-06-16 | 贵州省建筑材料科学研究设计院有限责任公司 | A kind of quartzy tailings fireproof heated board and preparation method thereof |
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Application publication date: 20130116 |