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Burn-free brick prepared by using high-volume residual slag, and preparation process thereof

A technology of unburned bricks and high dosage, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of lack of supervision, multi-management, low reuse rate, etc., to reduce mutual exclusion energy , Obvious economic and social benefits, low cost effect

Inactive Publication Date: 2017-09-01
GUANGDONG PROVINCIAL ACAD OF BUILDING RES GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the construction of waste disposal sites in most cities is far from keeping up with the speed of waste generation. At the same time, it faces the dilemma of multi-management, lack of supervision, and low reuse rate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 95 parts of residual sludge, 5 parts of cement, 0 part of fine aggregate, 0.1 part of soil curing agent, and 15 parts of water.

[0027] The preparation process of the above-mentioned residual mud slag unburned brick comprises the following steps:

[0028] (1) After drying the residual mud and slag, crush it through a 10mm sieve, and use the undersieve with a particle size of less than 10mm for later use, and continue to crush and sieve the oversieve;

[0029] (2) Measuring residual sludge (after sieving), cement, fine aggregate, soil stabilizer and water according to the mixing ratio;

[0030] (3) Use the feeder to add the residual sludge, cement and fine aggregate to the mixing tank, dry mix and stir for 2~5min to get the dry mix;

[0031] (3) Add water and soil curing agent to the dry mix in the mixing tank, continue stirring evenly, control the moisture content of the material at 10%~20%, and wet mix the wet mix for 5~10min;

[0032] (4) Send the wet mixture to th...

Embodiment 2

[0035] 70 parts of residual sludge, 15 parts of cement, 15 parts of fine aggregate, 0.02 parts of soil curing agent, and 20 parts of water.

[0036] The preparation process is the same as in Example 1.

[0037] The density grade of the unfired bricks obtained from residual mud and slag is grade A, the strength is 45Mpa, the drying shrinkage rate is 0.03%, the maximum water absorption rate is 5%, the carbonization coefficient is 0.90, the softening coefficient is 0.98, and the frost resistance: mass loss 0.5%, strength loss 1 %.

Embodiment 3

[0039] 76 parts of residual sludge, 4 parts of cement, 20 parts of fine aggregate, 0.01 part of soil curing agent, and 0 part of water.

[0040] The preparation process is the same as in Example 1.

[0041] The density grade of the unfired bricks obtained from residual mud and slag is grade A, the strength is 16Mpa, the drying shrinkage rate is 0.01%, the maximum water absorption rate is 1%, the carbonization coefficient is 0.98, the softening coefficient is 0.95, and the frost resistance: mass loss 2%, strength loss 8 %.

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Abstract

The invention discloses a burn-free brick prepared by using high-volume residual slag. The burn-free brick is prepared by stirring and mixing residual slag, cement, fine aggregate, a soil solidifying agent and water, performing compression moulding and performing natural maintenance. The burn-free brick comprises the following components in parts by mass: 70 to 95 parts of residual slag, 4 to 15 parts of cement, 0 to 20 parts of fine aggregate, 0.01 to 0.1 part of soil solidifying agent and 0 to 20 parts of water. The invention also discloses a preparation process of the burn-free brick prepared by using high-volume residual slag. The residual slag burn-free brick prepared by the preparation process has the advantages of high strength, high water stability, high freezing resistance, low cost and the like; a large amount of residual slag is used, so resource high-additional-value utilization of the residual slag solid waste is realized, sintered bricks can be effectively replaced and resource energy consumption and environmental pollution are reduced; and the phenomenon that slag encircles a city is effectively solved, man-made disaster is avoided, and remarkable economic and social benefits are achieved.

Description

technical field [0001] The invention relates to a building brick and a preparation process thereof, in particular to an unfired brick prepared by utilizing excess mud and slag in a large amount and the preparation process thereof. Background technique [0002] According to relevant statistics, in recent years, China's annual total discharge of construction waste is about 1.55 to 2.4 billion tons, accounting for about 40% of urban waste, most of which are residual mud. These numbers are still on the rise. In the past 10 years, the growth rate of China's residual sludge can almost match the economic growth. [0003] The appearance of the city is changing so quickly that few people care about how the muck disappears and where it ends up. However, the construction of waste disposal sites in most cities is far behind the speed of waste generation, and at the same time faces the dilemma of multi-management, lack of supervision, and low reuse rate. In the end, the hidden disease ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B24/26C04B18/16
CPCC04B28/04C04B40/0039C04B2201/50C04B18/16C04B14/06C04B14/02C04B18/12C04B24/16C04B24/20C04B24/2652C04B24/085C04B24/2641C04B24/2623C04B24/24C04B24/18C04B22/0093C04B22/10C04B22/147C04B24/42C04B2103/402C04B2103/408C04B2103/302C04B2103/65C04B2103/0068Y02W30/91
Inventor 陈培鑫李建新王新祥费飞龙李晓琛陈耿
Owner GUANGDONG PROVINCIAL ACAD OF BUILDING RES GRP CO LTD
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