Self compact concrete

A self-compacting concrete and coarse aggregate technology, which is applied in the field of construction engineering materials, can solve the problems of excessive heat of hydration, high cost, and large amount of cement, and achieve the effect of simple preparation and cost reduction
CN103420656AInactive Publication Date: 2013-12-04KUNMING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
KUNMING UNIV OF SCI & TECH
Publication Date
2013-12-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to self compact concrete, and belongs to the technical field of constructional engineering materials. The self compact concrete comprises the following components by weight: concrete 250-300 kg / m<3>, pulverized fuel ash 120-200 kg / m<3>, coarse aggregate 820-950 kg / m<3>, fine aggregate 700-850 kg / m<3>, water reducer 5-12 kg / m<3>, and water supply volume 145-160 kg / m<3>; the particle size of the coarse aggregate is 5-25 mm, and the fineness modulus of the fine aggregate is 2.5-2.8. The optimal proportion of the self compact concrete is concrete 290 kg / m<3>, pulverized fuel ash 160 kg / m<3>, coarse aggregate 891 kg / m<3>, fine aggregate 754 kg / m<3>, and water reducer 5.29 kg / m<3>. Compared with the prior art, the self compact concrete has the advantages that concrete consumption is about 35-55 kg / m<3>, the varieties of additives and admixtures are few, the preparation is simple, and the cost can be lowered to 30 yuan / m<3> at least.
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Description

technical field

[0001] The invention relates to self-compacting concrete, which belongs to the technical field of building engineering materials. Background technique

[0002] Self-compacting high-performance concrete is a new type of high-tech concrete that has high fluidity without segregation and bleeding at low water-to-binder ratio, and can be leveled by its own weight without vibration and filled with models and wrapped steel bars. Technology produces excellent concrete of uniform quality. The main performance of self-compacting high-performance concrete is that it can fill the formwork space by itself without vibrating under the action of its own weight, and can be used for structures that are difficult to pour or even impossible to pour. The concrete structure formed by self-compacting has good mechanical properties and durability. Since self-compacting high-performance concrete is vibration-free, it can save labor and electricity, improve construction efficiency, ...

Claims

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