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Wall brick prepared by virtue of ready-mixed concrete waste slurry

A technology of ready-mixed concrete and wall-laying bricks, applied in the field of wall-laying bricks, can solve the problems of unfavorable economic benefits of ready-mixed concrete enterprises, soil and groundwater pollution, and high cost of cleaning waste residues, and achieve obvious environmental protection effects and economic benefits, frost resistance The effect of good melting and large consumption

Inactive Publication Date: 2015-03-25
JINAN CHANGXING CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the solid waste is discharged, it will bring huge pollution to the surrounding environment: the discharged waste occupies a large area, and the soluble alkaline substances in the waste will gradually penetrate into the soil and groundwater, resulting in serious pollution of soil and groundwater; The fine particles in the waste residue will be blown into the air to pollute the atmospheric environment; the cost of cleaning up the waste residue is high, which is not conducive to improving the economic benefits of ready-mixed concrete enterprises
[0009] In addition, most of the lignin contained in the waste liquid produced in the papermaking process has been incinerated, which not only wastes resources, but also causes air pollution; also pollute the environment

Method used

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  • Wall brick prepared by virtue of ready-mixed concrete waste slurry
  • Wall brick prepared by virtue of ready-mixed concrete waste slurry

Examples

Experimental program
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Effect test

Embodiment 1

[0031] The wall brick is made of the following components by weight: 800 parts of filter press slurry with a production time of 30 hours, 40 parts of 42.5 grade Portland cement, 1 part of calcium lignosulfonate, water 25 parts, 800 parts artificial sand, 550 parts iron tailings slag. Among them, the fineness modulus of artificial sand is 3.4, MB is 0.6, and the stone powder content is 8%; the fineness modulus of iron tailings slag is 1.2, and MB value is 1.4.

[0032] For its preparation, see figure 1 , comprising the following steps: mixing and stirring the above raw materials evenly, pressing by a brick making machine into a wall brick adobe with a size of 240mm×115mm×53mm, moisturizing and curing for 28 days to obtain a wall brick.

Embodiment 2

[0034] The wall brick is made of the following components by weight: 700 parts of filter press slurry with a production time of 20 hours, 90 parts of ordinary Portland cement, 1.2 parts of calcium lignosulfonate, and 75 parts of water parts, artificial sand 875 parts, iron tailings slag 475 parts. Among them, the fineness modulus of artificial sand is 3.1, MB is 1.0, and the stone powder content is 10%; the fineness modulus of iron tailings slag is 1.4, and the MB value is 1.0.

[0035] For its preparation, see figure 1 , comprising the following steps: mixing and stirring the above raw materials evenly, pressing by a brick making machine into a wall brick adobe with a size of 240mm×115mm×53mm, moisturizing and curing for 28 days to obtain a wall brick.

Embodiment 3

[0037] The wall brick is made of the following components by weight: 600 parts of filter press slurry with a production time of 15 hours, 140 parts of 42.5 grade Portland cement, 1.4 parts of calcium lignosulfonate, water 125 parts, 950 parts of artificial sand, 400 parts of iron tailings slag. Among them, the fineness modulus of artificial sand is 2.8, MB is 1.4, and the stone powder content is 12%; the fineness modulus of iron tailings slag is 1.6, and MB value is 0.8.

[0038] For its preparation, see figure 1 , comprising the following steps: mixing and stirring the above raw materials evenly, pressing by a brick making machine into a wall brick adobe with a size of 240mm×115mm×53mm, moisturizing and curing for 28 days to obtain a wall brick.

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Abstract

The invention provides a wall brick prepared by virtue of ready-mixed concrete waste slurry. The wall brick prepared by virtue of ready-mixed concrete waste slurry is mainly prepared from the following components in parts by weight: 600-800 parts of pressure-filtered slurry, 40-140 parts of cement, 1-1.4 parts of calcium lignosulphonate, 25-125 parts of water, 800-950 parts of artificial sand and 400-550 parts of iron tail slag, wherein the components are measured in parts by weight. The wall brick utilizes the slurry generated by ready-mixed concrete enterprises and the waste liquid generated during paper-making, and is low in cost, green and environment-friendly, and high in economic benefits; the prepared wall brick is high in compressive strength and good in freezing-thawing resistance.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a wall-laying brick prepared by using ready-mixed concrete waste slurry. Background technique [0002] At present, my country's annual concrete output exceeds 1.5 billion cubic meters, and the average production of 1 cubic meter of concrete produces 0.03 tons of slurry, that is, my country's ready-mixed concrete enterprises produce about 50 million tons of slurry every year. [0003] At present, the waste slurry treatment technologies of ready-mixed concrete enterprises mainly include: [0004] 1. Static sedimentation efflux treatment method [0005] The generated slurry water is collected into the multi-stage sedimentation tank, and the supernatant produced after the slurry water settles can be used for the production of ready-mixed concrete. After the sediment accumulates to a certain amount, it is dug out by a forklift and discharged as construction waste. The sediment in t...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B24/18C04B18/12
CPCY02W30/91
Inventor 汪丕明萧树忠邵广超何智海刘继忠李如峰张玲马莎莎
Owner JINAN CHANGXING CONSTR GRP
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