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Preparation of high-strength, economic and environment-friendly brick

An environmentally friendly brick and purpose technology, applied in the field of concrete production, can solve problems such as high cost and complex production process, and achieve the effect of simple production process and solving reuse.

Inactive Publication Date: 2020-03-31
临沂斯科瑞聚氨酯材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing environmentally friendly bricks based on thermoplastic waste plastics and waste concrete aggregates to solve the shortcomings of recycled concrete products such as complex production process and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0036] Step 1, after removing impurities such as steel bars from the waste concrete, crush it with a crusher into recycled concrete aggregates with a particle size of 10-20 mesh;

[0037] Step 2: Wash the waste plastic to remove the sediment, and after drying, crush it into 25-35 mesh recycled plastic particles with a moisture content of less than 5%;

[0038] Step 3: Weigh 100 kg of recycled concrete aggregate and 15 kg of recycled plastic granules, add them to a mixer and mix them, set the temperature at 70°C to initially soften the recycled plastic granules;

[0039] Step 4, molding the mixture in step 3 in a mold through a calender or an extruder, first hot pressing and then cold pressing, the hot pressing temperature is preferably 140-200°C, the pressure is 2-10Mpa, and the cold pressing temperature is 70°C, The pressure is 2-10Mpa, and the interval between hot pressing and cold pressing is preferably 30 minutes;

[0040] Step 5, cooling at room temperature, and finally ...

Embodiment 3

[0042] Step 1, after removing impurities such as steel bars from the waste concrete, crush it with a crusher into recycled concrete aggregates with a particle size of 10-20 mesh;

[0043] Step 2: Wash the waste plastic to remove the sediment, and after drying, crush it into 25-35 mesh recycled plastic particles with a moisture content of less than 5%;

[0044] Step 3: Weigh 100 kg of recycled concrete aggregate and 10 kg of recycled plastic granules, add them to a mixer and mix them, set the temperature at 50°C to initially soften the recycled plastic granules;

[0045] Step 4, molding the mixture in step 3 in a mold through a calender or an extruder, first hot pressing and then cold pressing, the hot pressing temperature is preferably 140-200°C, the pressure is 2-10Mpa, and the cold pressing temperature is 50°C, The pressure is 2-10Mpa, and the interval between hot pressing and cold pressing is preferably 20min;

[0046] Step 5, cooling at room temperature, and finally obtai...

Embodiment 4

[0048] Step 1, after removing impurities such as steel bars from the waste concrete, crush it with a crusher into recycled concrete aggregates with a particle size of 10-20 mesh;

[0049] Step 2: Wash the waste plastic to remove the sediment, and after drying, crush it into 25-35 mesh recycled plastic particles with a moisture content of less than 5%;

[0050] Step 3: Weigh 100 kg of recycled concrete aggregate and 15 kg of recycled plastic granules, add them to a mixer and mix them, set the temperature at 50°C to initially soften the recycled plastic granules;

[0051]Step 4, molding the mixture in step 3 in a mold through a calender or an extruder, first hot pressing and then cold pressing, the hot pressing temperature is preferably 140-200°C, the pressure is 2-10Mpa, and the cold pressing temperature is 50°C, The pressure is 2-10Mpa, and the interval between hot pressing and cold pressing is preferably 20min;

[0052] Step 5, cooling at room temperature, and finally obtain...

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Abstract

The invention discloses a method for preparing a high-strength environment-friendly brick by using waste concrete and waste plastic as raw materials through heating and pressurizing. A purpose of theinvention is to effectively solve the problem of recycling construction waste and plastic waste. The preparation method comprises the following steps: putting waste concrete into a crusher to preparerecycled concrete aggregate; blending the recycled aggregate and plastic particles; and heating and pressurizing to prepare an environment-friendly brick. According to the invention, plastic particlescan well permeate into the gaps of recycled aggregate, so that the strength of the environment-friendly brick can be greatly improved; and the method is short in concrete regeneration period, simplein production process and rich and cheap in raw material source, has wide market potential, can be widely applied to manufacturing of building materials such as standard bricks, hollow bricks, porousbricks and the like, saves resources, protects the environment, and improves the economic value of waste concrete and waste plastic.

Description

Technical field: [0001] The invention relates to the technical field of concrete production, in particular to a method for preparing environmentally friendly bricks based on waste plastics and waste concrete. Using the thermoplasticity of plastics, the plastics are melted under heating conditions to firmly bond concrete particles together. After cooling and molding, the bricks are obtained. High-strength environmentally friendly bricks. Background technique: [0002] In the process of modern economic development, with the development of urbanization and the acceleration of housing construction, it is rare for concrete to be used so frequently and widely in many civil engineering constructions. At the same time, the construction of new projects and the maintenance and demolition of old buildings have produced a large amount of waste concrete. How to deal with these wastes has become an urgent environmental and resource problem facing the society. Some developed countries in ...

Claims

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Application Information

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IPC IPC(8): C04B26/20
CPCC04B26/20C04B2111/00017C04B2201/20C04B2201/50C04B24/001C04B24/287C04B24/2611C04B24/283C04B18/167
Inventor 孙运强韩志成
Owner 临沂斯科瑞聚氨酯材料有限公司
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