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Waste chamotte brick regeneration and utilization method, and concrete doped with waste chamotte brick powder

A technology of waste clay brick powder and waste clay brick, which is applied to the regeneration of waste clay bricks and the concrete field mixed with recycled waste clay brick powder, which can solve the problems of large cement consumption, reduce processing costs, save costs, and resist freezing good melting effect

Inactive Publication Date: 2012-02-29
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to simultaneously solve the problems of large cement consumption, serious environmental problems and clay brick disposal, the present invention provides a recycling method for waste clay bricks. In this method, clay bricks are partially replaced with cement in concrete, which realizes the recycling of clay brick construction waste. treatment, saving cement and reducing the environmental burden
[0007] It can be seen from the description of the background technology that the extensive use of cement has greatly reduced non-renewable resources such as clay and limestone, and the large amount of discarded clay bricks has also had a great impact on the environment and resources. In order to solve the problem of clay brick recycling at the same time In order to save the use of cement, the inventor came up with the concept of "processing the discarded clay bricks, and then using them to replace part of the cement to prepare concrete", and confirmed the feasibility of this concept through further research and a large number of experiments

Method used

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  • Waste chamotte brick regeneration and utilization method, and concrete doped with waste chamotte brick powder
  • Waste chamotte brick regeneration and utilization method, and concrete doped with waste chamotte brick powder
  • Waste chamotte brick regeneration and utilization method, and concrete doped with waste chamotte brick powder

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preparation example Construction

[0047] The preparation and testing methods of recycled clay brick concrete are the same as those of ordinary concrete, and are completely in accordance with GB / T 50081-2002 "Standards for Test Methods of Mechanical Properties of Ordinary Concrete" and GB / T50082-2009 "Test Methods for Long-term Performance and Durability of Ordinary Concrete ".

[0048] , Experimental results

[0049] Figure 1 ~ Figure 4 It is the mechanical performance test data of recycled waste clay brick concrete. The abscissa is the replacement rate of brick powder, and the performance of recycled concrete is the vertical axis to draw a column graph. It can be seen from the figure that with the increase of clay brick content and the decrease of cement content, the mechanical properties of concrete such as compressive resistance and flexural resistance decrease, especially the mechanical properties in the early stage decrease significantly. However, with the increase of time, the performance of concret...

Embodiment 1

[0053] The waste clay bricks are crushed to a particle size of 0.04mm, and recycled and reused. The method is as follows: using waste clay brick powder to partially replace cement as a cementitious material to prepare concrete. The ratio of raw materials for the concrete is: the addition of clay brick powder is 0-30%, the mass ratio of cementitious material (cement + brick powder) to aggregate is 1:3.6, the sand rate is 35%, water ash The ratio is 0.30, and the water reducer is a polycarboxylate ether water reducer. All polycarboxylate ether water reducers sold on the market can be used in the present invention, and the dosage is 1% of the mass of the gelling material. The concrete was prepared according to the general method, and the 28d compressive strength of the obtained concrete was 42~48MPa.

Embodiment 2

[0055] The waste clay bricks are crushed to a particle size of 0.06 mm, and recycled and reused. The method is as follows: using waste clay brick powder to partially replace cement as a cementitious material to prepare concrete. The ratio of raw materials for the concrete is: the addition of clay brick powder is 0-30%, the mass ratio of cementitious material (cement + brick powder) to aggregate is 1:3.5, the sand rate is 33%, water ash The ratio is 0.28, and the water reducer is polycarboxylate ether water reducer. All polycarboxylate ether water reducers sold in the market can be used in the present invention, and the dosage is 1.2% of the mass of the gelling material. The concrete was prepared according to the general method, and the 28d compressive strength of the obtained concrete was 49~56MPa.

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Abstract

The invention discloses a waste chamotte brick regeneration and utilization method. The method comprises steps that: waste chamotte bricks are crushed and sieved; and the waste chamotte brick powder is doped into cement, such that a cementing material of concrete is prepared. An addition amount of the waste chamotte brick powder is 0-30wt% of that of the cementing material, wherein 0% is not included. The invention also discloses a concrete doped with the waste chamotte brick powder. The price of the waste chamotte brick powder is generally lower than that of cement. Therefore, when cement ispartially replaced by waste chamotte brick, the cost of concrete is reduced. Meanwhile, the production of cement is reduced, such that natural clay, limestone resources and coal resources can be saved. Also, discharge of environmental pollutants such as carbon dioxide and sulfur dioxide caused by cement production can be reduced from the source. The waste chamotte bricks are recycled and utilized, such that landfill and treatment of the waste chamotte bricks can be reduced, and treatment cost of construction wastes can be reduced. Therefore, the method and the concrete provided by the invention assist in protecting the environment, and satisfy the sustainable development strategy.

Description

technical field [0001] The invention relates to a recycling method for waste clay bricks, in particular to a recycling method for waste clay bricks and concrete mixed with recycled waste clay brick powder, and belongs to the technical field of building materials. Background technique [0002] Concrete is one of the most widely used and used building materials in civil engineering. The wide application of concrete has led to the rapid development of the cement industry. In 2009, my country's total cement output was 1.648 billion tons, an increase of 16.07% over the previous year. However, the amount of limestone that can be used to produce cement in my country is limited, and clay resources cannot be exploited at will; and the rapid development of the cement industry has also caused serious environmental pollution. CO 2 , SO 2 Pollution such as dust and dust directly affects people's quality of life. On the other hand, in the past 20 to 30 years, with the demolition of ol...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B28/36C04B28/00B09B3/00
CPCY02W30/58
Inventor 葛智郑丽赵治广
Owner SHANDONG UNIV
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