Mix material of zoology concrete in use for bearing structure and preparation method

An ecological concrete and load-bearing structure technology, applied in the field of building materials, can solve the problems of natural sand and gravel mining restrictions, tight supply of sand and gravel, occupation of large fertile fields, etc., and achieve the effects of reducing mining, high durability, reducing energy consumption and pollution

Inactive Publication Date: 2005-01-12
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, precisely because of the needs of environmental protection, the mining of natural sand and gravel will be subject to more and more restrictions, which will lead to an increasing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The proportion of each component of the ecological concrete mixture for rigid pavement load-bearing is as follows:

[0038] 32.5 grade cement: 250kg

[0039] Class I fly ash: 200kg

[0040] Sand: 612kg

[0041] Recycled coarse aggregate: 1158kg

[0042] Water: 180kg

[0043] Water reducer: 5kg

[0044] The material configured according to the above ratio has the following properties:

[0045] 28d compressive strength: 31MPa.

Embodiment 2

[0047] The proportion of each component of the ecological concrete mixture for load-bearing foundation is as follows:

[0048] 32.5 grade cement: 200kg

[0049] Class II fly ash: 200kg

[0050] Sand: 551kg

[0051] Recycled coarse aggregate: 1280kg

[0052] Water: 180kg

[0053] Water reducer: 4kg

[0054] The material configured according to the above ratio has the following properties:

[0055] 28d compressive strength: 20MPa.

Embodiment 3

[0057] The proportion of each component of the load-bearing ecological concrete mixture for frame structure is as follows:

[0058] 42.5 grade cement: 300kg

[0059] Class I fly ash: 200kg

[0060] Sand: 560kg

[0061] Recycled coarse aggregate: 1190kg

[0062] Water: 175kg

[0063] Water reducer: 6kg

[0064] The material configured according to the above ratio has the following properties:

[0065] 28d compressive strength: 38MPa.

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Abstract

The invention is ecological concrete mixture used for bearing structure of civil engineering and prodn. method. It is produced by stirring main raw material regenerated crude aggregate created by grinding discarded concrete, cement, flyash and water.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an ecological concrete material for load-bearing structures and a preparation method thereof, which mainly use regenerated coarse aggregate obtained by crushing waste concrete and industrial waste fly ash as main raw materials. Background technique [0002] Due to many reasons such as municipal relocation, road expansion, accident demolition and renovation and reinforcement, a large amount of waste concrete has been generated. These waste concrete have seriously affected the improvement and sustainable development of urban ecology and environment. At the same time, precisely because of the needs of environmental protection, the mining of natural sand and gravel will be subject to more and more restrictions, which will lead to an increasingly tight supply of sand and gravel. [0003] In addition, as a kind of industrial waste, fly ash not only pollutes the ...

Claims

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Application Information

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IPC IPC(8): C04B14/06C04B18/06C04B18/16C04B28/04
CPCY02W30/91
Inventor 肖建庄
Owner TONGJI UNIV
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