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A kind of paving brick prepared by using waste clay brick and its preparation method

A technology for discarding clay bricks and paving bricks is applied in the field of building materials to achieve the effect of improving performance and inhibiting accumulation

Active Publication Date: 2018-06-29
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires the addition of high-calcium fly ash and curing under certain conditions. At the same time, it is a clinker-free cement and can only replace part of the cement within a certain range.

Method used

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  • A kind of paving brick prepared by using waste clay brick and its preparation method
  • A kind of paving brick prepared by using waste clay brick and its preparation method
  • A kind of paving brick prepared by using waste clay brick and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0019] For paving bricks prepared from waste clay bricks, the raw materials used in parts by weight are: 100 parts of waste clay bricks, 10 parts of cement, 15 parts of water, 0.3 parts of reinforcing agent, and 0.5 parts of surface modifier.

[0020] The reinforcing agent is acrylate emulsion with a solid content of 45-55%.

[0021] The surface modifier is diethanolamine.

[0022] The preparation method is as follows: crushing, reshaping and sieving waste clay bricks. The particle size distribution of waste clay brick powder is: < 0.15mm, 20%; 0.15mm-1.5mm, 50%; 4.75mm-9.5mm, 30%. Mix waste clay brick powder with particle size < 0.15mm and surface modifier evenly. Then waste clay bricks, cement, water, reinforcing agent and other materials were mixed in proportion, stirred evenly, molded under a pressure of 50 MPa, demoulded, and maintained for 28 days to obtain paving brick products. The performance indicators are shown in Table 1.

[0023] Table 1. Performance parameters ...

Embodiment 2

[0026] The paving bricks prepared by using waste clay bricks, the raw materials used are 100 parts by weight of waste clay bricks, 15 parts of cement, 0.3 parts of reinforcing agent, 0.75 parts of surface modifier and 12 parts of water.

[0027] The reinforcing agent is styrene-butadiene emulsion with a solid content of 45-55%.

[0028] Surface modifier triethanolamine.

[0029] The waste clay bricks are crushed, shaped and sieved. The particle size distribution of waste clay bricks is: < 0.15 mm, 20%; 0.15mm-1.5mm, 60%; 4.75 mm-9.5 mm, 20%. Mix waste clay brick powder with particle size < 0.15mm and surface modifier evenly. Then waste clay bricks, cement, water, reinforcing agent and other materials were mixed, stirred evenly, and then formed under a pressure of 55 MPa, demoulded, and standard curing for 28 days to obtain paving brick products. The performance indicators are shown in Table 2.

[0030] Table 2. Performance parameters of paving brick products prepared from wa...

Embodiment 3

[0033] The paving bricks prepared by using waste clay bricks, the raw materials used are 100 parts by weight of waste clay bricks, 18 parts of cement, 0.4 parts of reinforcing agent, 1 part of surface modifier and 12 parts of water.

[0034] The reinforcing agent is styrene-acrylic emulsion with a solid content of 45-55%.

[0035] The surface modifier is coconut acid diethanolamide.

[0036] The waste clay bricks are crushed, shaped and sieved, and the particle size distribution of waste clay brick powder is: < 0.15 mm, 15%; 0.15mm-1.5mm, 55%; 4.75 mm-9.5 mm, 30%. Mix waste clay brick powder with particle size < 0.15 mm and surface modifier evenly. Then mix waste clay bricks, cement, water, reinforcing agent and other materials, stir evenly, and then mold them under a pressure of 60MPa, demould, and standard curing for 28 days. The performance indicators of paving brick products are shown in Table 3.

[0037] Table 3. Performance parameters of paving brick products prepared ...

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Abstract

The invention provides paving bricks prepared by utilizing waste clay bricks and preparation method thereof. The waste clay bricks are used as a main raw material, a surface modification agent, a strengthening agent, cement, water and other raw materials are prepared into paving bricks. The preparation method comprises the steps that the waste clay bricks are crushed, reshaped and screened, the surface modification agent is added, and even stirring and mixing are performed; then, the cement, the strengthening agent and water are evenly stirred; forming and demolding and standard curing are performed under the pressure of 50-60 MPa for 28 days to obtain paving brick products. The adding amount of the waste clay bricks in the prepared paving bricks is 80-85%, the waste clay bricks re completely utilized at a time, the utilization rate is 100%, no secondary by-product is produced, recycling and environmental protection are achieved, and the prepared paving bricks have excellent performance.

Description

technical field [0001] The invention relates to paving bricks prepared from waste clay bricks and a preparation method thereof, belonging to the field of building materials. Background technique [0002] With the acceleration of my country's economic development and urbanization, a large number of old buildings are demolished every year, and construction waste is increasing day by day, of which clay bricks account for a considerable proportion, which has brought enormous pressure to the environment and land resources. According to statistics, the annual output of discarded clay bricks in my country is about 52 million tons. Therefore, the efficient utilization of clay bricks can improve the overall level of construction waste recycling, effectively save energy resources, reduce damage to limited cultivated land, and reduce environmental pressure. . [0003] At present, the utilization of waste clay bricks is concentrated in the preparation of recycled aggregates, recycled fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B18/16
CPCC04B18/16C04B28/04C04B2111/0075C04B2201/20C04B2201/50C04B24/2641C04B24/122C04B22/002C04B24/00C04B24/287Y02W30/91
Inventor 田清波徐丽娜张丰庆岳雪涛
Owner SHANDONG JIANZHU UNIV
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