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Mixed concrete

A concrete and admixture technology, applied in the field of mixed concrete, can solve the problems of weak fireproof and anti-explosion performance, poor impact resistance, low flexural strength, etc., to achieve anti-explosion and fire resistance, resistance to surface cracking, and low cost Effect

Inactive Publication Date: 2014-01-29
ZHANGJIAGANG SHANMU NEW MATERIAL TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing mixed concrete materials have low tensile strength, low flexural strength, poor impact resistance, and weak fire and explosion resistance. Therefore, we need to provide a new type of mixed concrete material to improve the toughness of concrete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Mixed concrete is composed of cement, yellow sand, red brick particles, composite mineral compact admixture, admixture and water, of which, 8% cement, 29.81% yellow sand, 45% red brick particles, and 8% composite mineral compact admixture %, admixture 0.19%, water 9%; the composite mineral compactness admixture equivalently replaces 20% of the cement; the particle size of the red brick particles is 10 mm; the fineness modulus of the yellow sand is 2.3; the yellow sand The average particle size of the cement is 0.35 mm; the cement is ordinary Portland cement with an index number of 32.5.

Embodiment 2

[0035] Mixed concrete is composed of cement, yellow sand, red brick particles, composite mineral compact admixture, admixture and water, of which, cement 12%, yellow sand 37%, red brick particles 40.86%, composite mineral compact admixture 4 %, admixture 0.14%, water 6%; the composite mineral compactness admixture equivalently replaces 45% of the cement; the particle diameter of the red brick particles is 15mm; the fineness modulus of the yellow sand is 3; The average particle size is 0.5 mm; the cement is ordinary Portland cement with index number 42.5.

Embodiment 3

[0037] Mixed concrete is composed of cement, yellow sand, red brick particles, composite mineral compact admixture, admixture and water, of which, cement 12%, yellow sand 28%, red brick particles 42.81%, composite mineral compact admixture 8 %, admixture 0.19%, water 9%; the composite mineral compactness admixture equivalently replaces 35% of the cement; the particle diameter of the red brick particles is 13mm; the fineness modulus of the yellow sand is 2.5; The average particle size is 0.45 mm; the cement is ordinary Portland cement with index number 32.5, and the admixture also includes a colorant.

[0038] The mixed concrete of the present invention adopts conventional concrete preparation methods in the art. In order to better achieve the compactness of the mixed concrete, the mixing time is 2.5 to 3.0 minutes to ensure uniform mixing. And after its initial setting, it must be watered and maintained for more than 14 days to ensure the development of concrete strength and...

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PUM

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Abstract

The invention relates to mixed concrete, which is composed of cement, yellow sand, red brick particles, a compact admixture of complex minerals, an additive and water, wherein the compact admixture of complex minerals is composed of ultrafine mineral powder and coal ash; the ultrafine mineral powder satisfies the following technical parameters: fineness D97 less than or equal to 15 microns, chloride ion content less than or equal to 0.13%, sulfur trioxide content less than or equal to 3.8%, moisture content less than or equal to 0.8% and apparent density greater than 550 m<2> / kg. According to the invention, the cracking of the concrete can be prevented, the breaking strength and tenacity of the concrete are improved, the width of a crack is limited and the concrete surface checking resistance and the antiknock and fireproofing ability of the concrete are improved; the mixed concrete can be widely applied to concrete structures in such fields as construction, water conservancy, municipal transportation and marine war industry.

Description

technical field [0001] The invention relates to the technical field of building engineering materials, in particular to a mixed concrete. Background technique [0002] Concrete has been used as a building material for more than 100 years. The advantages of concrete are high compressive strength, easy to obtain materials, easy to shape and low price, and can be combined with other materials to make various heavy fixtures. However, the Achilles heel of concrete is tensile strength. Low strength, easy to crack, thereby reducing the bearing capacity of the concrete structure and shortening the service life, becoming a hidden danger of various disasters and accidents. [0003] Concrete is a general term for cement-based mixed materials made of concrete as the matrix and other mixed materials. Because mixed concrete can well inhibit the development of cracks and improve various properties of concrete, mixed concrete is to improve the strength of concrete. effective method for per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
Inventor 王辉谷彬芳郝永珍谭文斌陈根泽王建清
Owner ZHANGJIAGANG SHANMU NEW MATERIAL TECH DEV