CN102951876A - Vibration-free self-compacting concrete composition - Google Patents
Vibration-free self-compacting concrete composition Download PDFInfo
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- CN102951876A CN102951876A CN2011102355669A CN201110235566A CN102951876A CN 102951876 A CN102951876 A CN 102951876A CN 2011102355669 A CN2011102355669 A CN 2011102355669A CN 201110235566 A CN201110235566 A CN 201110235566A CN 102951876 A CN102951876 A CN 102951876A
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Abstract
The invention relates to infrastructure construction materials, particularly to a concrete composition. A vibration-free self-compacting concrete composition is formed by mixing of the following components by weight: 100 parts of cement, 10-30 parts of fly ash, 20-50 parts of limestone powder, 0.8-2 parts of a polycarboxylic acid water reducer, 250-350 parts of machine-made sand obtained by crushing gravel, and 250-350 parts of gravel. The limestone powder is made by processing the waste material generated in the gravel and machine-made sand production process. The invention realizes complete utilization of limestone resources, not only reduces the project cost, but also realizes the energy saving and environmental protection, thus being in line with the development requirements of green concrete.
Description
Technical field
The present invention relates to the capital construction material, relate in particular to a kind of concrete composition.
Background technology
Self-compacting concrete refers to that mix has very high flowability, in traditional slump consistancy test, the slump reaches more than the 250mm, the slump divergence reaches more than the 600mm, and in casting process, do not emanate, bleeding not, can be full of without vibrating the concrete of template and parcel reinforcing bar, belong to the high end parts of high-flowing concrete.Be specially adapted to the intensive construction that is unfavorable for the complicated abnormal shape structures of vibration compacting of engineering reinforcement and reinforcing bar, now become the study hotspot of new concrete.
Self-compacting concrete is had relatively high expectations to starting material, the general high-quality river sand that adopts, mineral admixture adopts two mix high-quality fly ash and breeze technology, expansion along with domestic construction market, these conventional high-quality raw materials are more and more deficienter, for guaranteeing sustainable development and the construction quality of construction project, need to continually develop starting material with the needs of supply engineering construction, thereby carry out research and development and the use of Machine-made Sand.But, produced a large amount of waste materials in the production process of rubble and Machine-made Sand, both caused wasting of resources environmental pollution, taken again a large amount of soils.
Summary of the invention
The present invention is intended to address the aforementioned drawbacks, and a kind of self-dense concrete composition of without vibration is provided.The present invention has realized the fully utilization of limestone resource, has not only reduced construction costs, and has realized energy-conserving and environment-protective, meets the green concrete demand for development.
For addressing the above problem, a kind of self-dense concrete composition of without vibration, it comprises the following component according to the weight fraction meter, and 100 parts of cement, flyash 10-30 part, limestone powder 20-50 part, polycarboxylate water-reducer 0.8-2 part, the Machine-made Sand 250-350 part that forms take rubble as raw material crushing, the mixing of rubble 250-350 part form; Described limestone powder processes for the waste material of producing in rubble and the Machine-made Sand process.
The self-dense concrete composition of described a kind of without vibration, described rubble are the 5-20mm continuous grading, and elongated particles is less than 5% of the rubble total amount, and silt content is less than 0.5% after washing.
The self-dense concrete composition of described a kind of without vibration, described Machine-made Sand fineness modulus is 2.5-3.0, and grating is the medium sand requirement of II district, and content of stone powder is 5%-10%, and silt content is less than 0.5%.
The self-dense concrete composition of described a kind of without vibration, described limestone powder fineness is for being not more than 100 orders.
The self-dense concrete composition of described a kind of without vibration, described flyash are I or II level flyash, need water ratio≤100%.
The self-dense concrete composition of described a kind of without vibration, described cement are silicate cement or ordinary Portland cement, and intensity is not less than 42.5 strength grades.
The self-dense concrete composition of described a kind of without vibration, described polycarboxylate water-reducer is the polycarboxylate water-reducer with high diminishing and water conservation, solid content is greater than 20%.
The present invention adopts rubble, Machine-made Sand and limestone powder to add other material formulation self-compacting concrete, has realized the fully utilization of limestone resource in being processed into the concrete raw material process, has alleviated the deficient predicament of concrete raw material of growing tension.The use that waste material in rubble and the Machine-made Sand production process is processed into limestone powder efficiently solves the easily shortcoming such as segregation, bleeding and coherency and poor water retention property of simple machine-made sand self-compacting concrete, when guaranteeing construction quality, has realized energy-conserving and environment-protective.Than the self-compacting concrete with texts, Wingdale complete utilization environmental protection self-compacting concrete of the present invention, with low cost, meet the strategy of sustainable development, have important pushing effect to improving urban ecological environment and improving the concrete construction technology level.
Embodiment
A kind of self-dense concrete composition of without vibration, it comprises the following component according to the weight fraction meter, and 100 parts of cement, flyash 10-30 part, limestone powder 20-50 part, polycarboxylate water-reducer 0.8-2 part, the Machine-made Sand 250-350 part that forms take rubble as raw material crushing, the mixing of rubble 250-350 part form; Described limestone powder processes for the waste material of producing in rubble and the Machine-made Sand process.
The self-dense concrete composition of described a kind of without vibration, described rubble are the 5-20mm continuous grading, and elongated particles is less than 5% of the rubble total amount, and silt content is less than 0.5% after washing.
The self-dense concrete composition of described a kind of without vibration, described Machine-made Sand fineness modulus is 2.5-3.0, and grating is the medium sand requirement of II district, and content of stone powder is 5%-10%, and silt content is less than 0.5%.
A kind of self-dense concrete composition of without vibration, described limestone powder fineness is for being not more than 100 orders.
The self-dense concrete composition of described a kind of without vibration, described flyash are I or II level flyash, need water ratio≤100%.
The self-dense concrete composition of described a kind of without vibration, described cement are silicate cement or ordinary Portland cement, and intensity is not less than 42.5 strength grades.
The self-dense concrete composition of described a kind of without vibration, described polycarboxylate water-reducer is the polycarboxylate water-reducer with high diminishing and water conservation, solid content is greater than 20%.
Embodiment
According to following each assembly side's concrete batching composition:
| ? | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Cement | 100 | 100 | 100 | 100 |
| Flyash | 10 | 25 | 30 | 30 |
| Limestone powder | 20 | 25 | 30 | 50 |
| Polycarboxylate water-reducer | 0.8 | 1.3 | 1.7 | 2.0 |
| Machine-made Sand | 250 | 253 | 258 | 300 |
| Rubble | 250 | 261 | 269 | 300 |
Each example composition is added entry with the weight ratio 0.4:1 of water and cement, stirred 2 minutes, after 12 hours, reach curing.Carry out respectively the experiment of workability of concrete and ultimate compression strength:
| ? | The slump/mm | Slump divergence/mm | 7d intensity/MPa | 28d intensity/MPa |
| Embodiment 1 | 270 | 615 | 44.5 | 61.5 |
| Embodiment 2 | 265 | 605 | 40.3 | 54.4 |
| Embodiment 3 | 270 | 615 | 44.5 | 61.5 |
| Embodiment 4 | 285 | 620 | 36.2 | 38.2 |
Claims (7)
1. the self-dense concrete composition of a without vibration, it is characterized in that: it comprises the following component according to the weight fraction meter, and 100 parts of cement, flyash 10-30 part, limestone powder 20-50 part, polycarboxylate water-reducer 0.8-2 part, the Machine-made Sand 250-350 part that forms take rubble as raw material crushing, the mixing of rubble 250-350 part form; Described limestone powder processes for the waste material of producing in rubble and the Machine-made Sand process.
2. the self-dense concrete composition of a kind of without vibration as claimed in claim 1, it is characterized in that: described rubble is the 5-20mm continuous grading, and elongated particles is less than 5% of the rubble total amount, and silt content is less than 0.5% after washing.
3. the self-dense concrete composition of a kind of without vibration as claimed in claim 1, it is characterized in that: described Machine-made Sand fineness modulus is 2.5-3.0, and grating is the medium sand requirement of II district, and content of stone powder is 5%-10%, and silt content is less than 0.5%.
4. the self-dense concrete composition of a kind of without vibration as claimed in claim 1, it is characterized in that: described limestone powder fineness is for being not more than 100 orders.
5. the self-dense concrete composition of a kind of without vibration as claimed in claim 1, it is characterized in that: described flyash is I or II level flyash, needs water ratio≤100%.
6. the self-dense concrete composition of a kind of without vibration as claimed in claim 1, it is characterized in that: described cement is silicate cement or ordinary Portland cement, and intensity is not less than 42.5 strength grades.
7. the self-dense concrete composition of a kind of without vibration as claimed in claim 1, it is characterized in that: described polycarboxylate water-reducer is the polycarboxylate water-reducer with high diminishing and water conservation, and solid content is greater than 20%.
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| CN2011102355669A CN102951876A (en) | 2011-08-17 | 2011-08-17 | Vibration-free self-compacting concrete composition |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103288398A (en) * | 2013-05-15 | 2013-09-11 | 宁波市高等级公路建设指挥部 | High-performance machine-made sand marine concrete and preparation method thereof |
| CN103351139A (en) * | 2013-07-08 | 2013-10-16 | 贵州省公路工程集团有限公司 | Block stone/chip stone self-compaction concrete |
| CN103435299A (en) * | 2013-08-06 | 2013-12-11 | 内蒙古巨华集团大华建筑安装有限公司 | Heating ground concrete packing layer |
| CN103601440A (en) * | 2013-10-29 | 2014-02-26 | 江苏名和集团有限公司 | C60 steel pipe self-compacting concrete |
| CN103979868A (en) * | 2014-04-16 | 2014-08-13 | 安徽颐鑫节能材料有限公司 | Environmental protection and energy saving light partition board and production method thereof |
| CN104478325A (en) * | 2014-11-28 | 2015-04-01 | 沈阳大学 | C90-grade self-compaction high-strength concrete and preparation method thereof |
| CN104724989A (en) * | 2015-02-09 | 2015-06-24 | 华润水泥技术研发（广西）有限公司 | Ground limestone powder full-manufactured sand high-strength recycled self-compacting concrete and application thereof |
| CN106007579A (en) * | 2016-05-23 | 2016-10-12 | 青神鑫统领建材有限公司 | Concrete containing machine-processed gravel powder and dust collection stone powder and preparation method thereof |
| CN106145834A (en) * | 2016-06-28 | 2016-11-23 | 蚌埠市方阵商品混凝土有限公司 | A kind of self-compacting concrete |
| CN106278056A (en) * | 2016-08-24 | 2017-01-04 | 王文明 | The concrete of misfiring of using mechanism sand preparation |
| CN106316253A (en) * | 2016-08-23 | 2017-01-11 | 廊坊荣盛混凝土有限公司 | Application of limestone powder in concrete |
| CN107324707A (en) * | 2017-07-07 | 2017-11-07 | 南京航空航天大学 | A kind of thin-walled prefabricated components no vibrated concrete and its casting method |
| CN108191338A (en) * | 2018-01-24 | 2018-06-22 | 暨南大学 | A kind of high-performance artificial sand concrete prepared by the use of mountain flour and rice hull ash as admixture |
| CN108191337A (en) * | 2018-01-24 | 2018-06-22 | 暨南大学 | A kind of concrete prepared using artificial sand and mountain flour |
| CN110342860A (en) * | 2019-05-30 | 2019-10-18 | 苏州嘉盛远大建筑工业有限公司 | A kind of Self-leveling self-compacting concrete and its processing method |
| CN111620624A (en) * | 2020-05-25 | 2020-09-04 | 中铁大桥局集团有限公司 | Self-compacting concrete and preparation method thereof |
| CN113135707A (en) * | 2021-03-18 | 2021-07-20 | 太仓申昆混凝土有限公司 | Machine-made sand self-compacting concrete |
| CN113773021A (en) * | 2021-09-23 | 2021-12-10 | 重庆中科建筑科技(集团)有限公司 | Self-compacting concrete and preparation method thereof |
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| CN1792978A (en) * | 2005-12-08 | 2006-06-28 | 贵州省公路工程总公司 | Machine-made sand self-compacting concrete |
| CN101186478A (en) * | 2007-12-21 | 2008-05-28 | 重庆市大业混凝土有限公司 | Method for producing concrete mixture by using machine-made sand to substitute natural sand |
| CN101353242A (en) * | 2008-09-16 | 2009-01-28 | 中国建筑第三工程局商品混凝土供应站成都分站 | Machine-made sand self-compaction concrete |
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- 2011-08-17 CN CN2011102355669A patent/CN102951876A/en active Pending
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| CN1792978A (en) * | 2005-12-08 | 2006-06-28 | 贵州省公路工程总公司 | Machine-made sand self-compacting concrete |
| CN101186478A (en) * | 2007-12-21 | 2008-05-28 | 重庆市大业混凝土有限公司 | Method for producing concrete mixture by using machine-made sand to substitute natural sand |
| CN101353242A (en) * | 2008-09-16 | 2009-01-28 | 中国建筑第三工程局商品混凝土供应站成都分站 | Machine-made sand self-compaction concrete |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103288398A (en) * | 2013-05-15 | 2013-09-11 | 宁波市高等级公路建设指挥部 | High-performance machine-made sand marine concrete and preparation method thereof |
| CN103351139A (en) * | 2013-07-08 | 2013-10-16 | 贵州省公路工程集团有限公司 | Block stone/chip stone self-compaction concrete |
| CN103435299A (en) * | 2013-08-06 | 2013-12-11 | 内蒙古巨华集团大华建筑安装有限公司 | Heating ground concrete packing layer |
| CN103435299B (en) * | 2013-08-06 | 2015-09-16 | 内蒙古巨华集团大华建筑安装有限公司 | Heating ground concrete packing layer |
| CN103601440A (en) * | 2013-10-29 | 2014-02-26 | 江苏名和集团有限公司 | C60 steel pipe self-compacting concrete |
| CN103979868A (en) * | 2014-04-16 | 2014-08-13 | 安徽颐鑫节能材料有限公司 | Environmental protection and energy saving light partition board and production method thereof |
| CN104478325A (en) * | 2014-11-28 | 2015-04-01 | 沈阳大学 | C90-grade self-compaction high-strength concrete and preparation method thereof |
| CN104724989B (en) * | 2015-02-09 | 2017-06-13 | 华润水泥技术研发（广西）有限公司 | Levigate full Machine-made Sand high intensity regeneration self-compacting concrete of agstone and application thereof |
| CN104724989A (en) * | 2015-02-09 | 2015-06-24 | 华润水泥技术研发（广西）有限公司 | Ground limestone powder full-manufactured sand high-strength recycled self-compacting concrete and application thereof |
| CN106007579A (en) * | 2016-05-23 | 2016-10-12 | 青神鑫统领建材有限公司 | Concrete containing machine-processed gravel powder and dust collection stone powder and preparation method thereof |
| CN106145834A (en) * | 2016-06-28 | 2016-11-23 | 蚌埠市方阵商品混凝土有限公司 | A kind of self-compacting concrete |
| CN106316253A (en) * | 2016-08-23 | 2017-01-11 | 廊坊荣盛混凝土有限公司 | Application of limestone powder in concrete |
| CN106278056A (en) * | 2016-08-24 | 2017-01-04 | 王文明 | The concrete of misfiring of using mechanism sand preparation |
| CN107324707A (en) * | 2017-07-07 | 2017-11-07 | 南京航空航天大学 | A kind of thin-walled prefabricated components no vibrated concrete and its casting method |
| CN107324707B (en) * | 2017-07-07 | 2019-08-23 | 南京航空航天大学 | A kind of thin-walled prefabricated components no vibrated concrete and its casting method |
| CN108191338A (en) * | 2018-01-24 | 2018-06-22 | 暨南大学 | A kind of high-performance artificial sand concrete prepared by the use of mountain flour and rice hull ash as admixture |
| CN108191337A (en) * | 2018-01-24 | 2018-06-22 | 暨南大学 | A kind of concrete prepared using artificial sand and mountain flour |
| CN110342860A (en) * | 2019-05-30 | 2019-10-18 | 苏州嘉盛远大建筑工业有限公司 | A kind of Self-leveling self-compacting concrete and its processing method |
| CN111620624A (en) * | 2020-05-25 | 2020-09-04 | 中铁大桥局集团有限公司 | Self-compacting concrete and preparation method thereof |
| CN111620624B (en) * | 2020-05-25 | 2022-06-24 | 中铁大桥局集团有限公司 | Self-compacting concrete and preparation method thereof |
| CN113135707A (en) * | 2021-03-18 | 2021-07-20 | 太仓申昆混凝土有限公司 | Machine-made sand self-compacting concrete |
| CN113773021A (en) * | 2021-09-23 | 2021-12-10 | 重庆中科建筑科技(集团)有限公司 | Self-compacting concrete and preparation method thereof |
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Application publication date: 20130306 |