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Basalt fiber reinforced recycled concrete

A technology of recycled concrete and basalt fiber, applied in the field of engineering materials, can solve the problems of recycled concrete strength, impermeability and impact resistance, low freeze-thaw resistance, etc., achieve good compressive strength, protect the environment, and improve the effect of compressive strength

Inactive Publication Date: 2019-12-20
广州珠江黄埔大桥建设有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the problems of low strength, impermeability, impact resistance and freeze-thaw resistance of recycled concrete

Method used

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  • Basalt fiber reinforced recycled concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Prepare raw materials, which are composed of the following components by weight: 500 parts of recycled coarse aggregate, 400 parts of river sand, 400 parts of ceramsite, 350 parts of ordinary portland cement, 40 parts of fly ash, 10 parts of silica fume, mineral powder 10 parts, 3 parts of water reducer, 8 parts of basalt fiber with a length of 10 mm and a diameter of 15 μm, and 180 parts of water.

[0024] Add recycled coarse aggregate + ceramsite + river sand + cement + fly ash + silica fume + mineral powder in the forced mixer (stirring for 2 minutes) → basalt fiber (stirring for 3 minutes) → water and water reducer (stirring 2 minutes) → the preparation is completed, and the mold is loaded. Put the mold on a vibrating table to vibrate, and the slurry on the surface shall prevail. After one day, remove the mold and put it in the curing room for curing for 28 days.

Embodiment 2

[0026] Prepare raw materials, which are composed of the following components by weight: 600 parts of recycled coarse aggregate, 500 parts of river sand, 300 parts of ceramsite, 320 parts of ordinary Portland cement, 45 parts of fly ash, 12 parts of silica fume, mineral powder 15 parts, 4 parts of water reducer, 15 parts of basalt fiber with a length of 15 mm and a diameter of 10 μm, and 170 parts of water.

[0027] Add recycled coarse aggregate + ceramsite + river sand + cement + fly ash + silica fume + mineral powder in the forced mixer (stirring for 2 minutes) → basalt fiber (stirring for 3 minutes) → water and water reducer (stirring 2 minutes) → the preparation is completed, and the mold is loaded. Put the mold on a vibrating table to vibrate, and the slurry on the surface shall prevail. After one day, remove the mold and put it in the curing room for curing for 28 days.

Embodiment 3

[0029] Prepare raw materials, which are composed of the following components by weight: 700 parts of recycled coarse aggregate, 600 parts of river sand, 250 parts of ceramsite, 300 parts of ordinary portland cement, 50 parts of fly ash, 14 parts of silica fume, mineral powder 18 parts, 4 parts of water reducing agent, 12 parts of basalt fiber with a length of 18 mm and a diameter of 17 μm, and 165 parts of water.

[0030] Add recycled coarse aggregate + ceramsite + river sand + cement + fly ash + silica fume + mineral powder in the forced mixer (stirring for 2 minutes) → basalt fiber (stirring for 3 minutes) → water and water reducer (stirring 2 minutes) → the preparation is completed, and the mold is loaded. Put the mold on a vibrating table to vibrate, and the slurry on the surface shall prevail. After one day, remove the mold and put it in the curing room for curing for 28 days.

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Abstract

The invention discloses basalt fiber reinforced recycled concrete. The basalt fiber reinforced recycled concrete is prepared from components in parts by weight as follows: 500-800 parts of recycled coarse aggregates, 400-700 parts of river sand, 200-400 parts of ceramsite, 280-350 parts of ordinary Portland cement, 40-60 parts of fly ash, 10-15 parts of silica fume, 10-20 parts of mineral powder,3-5 parts of a water reducing agent, 8-15 parts of basalt fiber and 160-180 parts of water. Compared with common recycled concrete, the basalt fiber reinforced recycled concrete has higher compressivestrength, splitting tensile strength, breaking strength, freeze thawing resistance, impervious performance and shock resistance.

Description

technical field [0001] The invention relates to a recycled concrete, in particular to a basalt fiber reinforced recycled concrete, which belongs to the technical field of engineering materials. Background technique [0002] With the development of urban construction and the acceleration of urbanization, the demolition of a large number of old buildings and the transformation of cement concrete pavement have produced more and more waste concrete. If these waste concrete is not used, it will occupy a large amount of land resources and be piled up for a long time. , the residual heavy metals and other toxic substances will also cause soil and water quality to deteriorate. The development and application of recycled concrete, on the one hand, can solve the problem of waste concrete polluting the environment; on the other hand, it can also reduce the consumption of natural materials. [0003] At present, there are still defects in recycled concrete. Because the strength of recyc...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B111/20C04B111/27C04B14/46
CPCC04B28/04C04B2111/20C04B2111/27C04B2111/29C04B2201/32C04B2201/50C04B2201/52C04B18/16C04B14/068C04B18/027C04B18/08C04B18/146C04B18/141C04B2103/302C04B14/4656
Inventor 张少锦王勇赵超
Owner 广州珠江黄埔大桥建设有限公司
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