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Processing method for waste old rubber powder used for cement-based material

A technology of waste rubber powder and cement-based materials, which is applied in the field of building materials, can solve the problems of high modification cost and inconvenient construction, and achieve the effects of increasing bonding strength, facilitating uniform distribution, and increasing density

Active Publication Date: 2014-05-28
SICHUAN GOLDMILL ENVIRONMENTAL PROTECTION NEW MATERIALS
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the high cost of surface modification of waste rubber particles, the discharge of three wastes of chemical materials and the inconvenience of construction caused by the large difference between the density of cement slurry and the density of waste rubber powder, the purpose of the present invention is to provide a method with lower cost to make rubber The cement-based powder is well bonded to the cement base, and at the same time, according to the density of the rubber cement-based powder, it is easy to match the cement slurry of different densities, so that the rubber cement-based powder is basically evenly distributed in the cement concrete according to the design requirements

Method used

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  • Processing method for waste old rubber powder used for cement-based material
  • Processing method for waste old rubber powder used for cement-based material
  • Processing method for waste old rubber powder used for cement-based material

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1: the goods of rubber concrete

[0025] 18000g of 40 mesh waste rubber powder (90%) and 2000g of 40 mesh diatomite (10%) were stirred for 5 minutes by a stirrer to prepare a mixed raw material; the mixed raw material was made into rubber cement base powder through a roller extruder. The rubber concrete modules were prepared according to the test methods of JGJ55-2000 and JTG F30-2003. (See Table 1)

[0026] Table 1 The amount of various materials in concrete

[0027] .

[0028] The flexural and compressive strength test results of embodiment 1 rubber concrete are shown in image 3 and Figure 4 .

[0029] From the comparative flexural and compressive strength test results, it can be seen that when the ratio of rubber cement-based powder is 5%, the flexural strength is higher than that of cement concrete without rubber cement-based powder; When the proportion is 5%, 10% and 15%, the compressive strength is higher than that of cement concrete without ...

Embodiment 2

[0030] Embodiment 2: the goods of elastic grout stone block

[0031] 40 kg of 40-mesh waste rubber powder (80%) and 10 kg of 40-mesh diatomite (20%) were stirred by a mixer for 5 minutes to prepare a mixed raw material; the mixed raw material was made into rubber cement-based powder through a roller extruder. Rubber cement base powder is added to the cement slurry according to the weight ratio of 4%, 6% and 8%, to obtain rubber cement stone.

[0032] Table 2 Mechanical properties of rubber cement stone system

[0033] .

[0034] Table 3 Comprehensive mechanical properties of rubber cement system

[0035] .

[0036] Through the analysis of the mechanical properties of cement stone, it can be found that the main performance of improving the elasticity of cement stone is the increase of Poisson's ratio and the decrease of elastic modulus. By comparing the elastic modulus of cement stone with different additions of rubber cement-based powder, the dynamic test found that ...

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Abstract

The invention discloses a processing method for waste old rubber powder used for a cement-based material. The processing method comprises the following steps: mixing an inert inorganic powder material with waste rubber particles, and then embedding the inert inorganic powder material into the waste rubber powder through a physical method. In this processing method, the inert organic material and the rubber particles can be mixed in any ratio according to the needs, moreover, the inert organic powder material is embedded into the rubber powder through a physical method, thus the adhering strength between the rubber cement-based powder and the cement slurry is prominently increased, at the same time the density of the rubber cement-based powder is also increased, and thus the rubber cement-based powder can be evenly distributed in the concrete.

Description

technical field [0001] The invention relates to a method for treating waste rubber powder used in cement-based materials, and belongs to the field of building materials. Background technique [0002] In the past 30 years, developed countries such as the United States, Canada, Japan, and South Korea have considered applying crushed waste tire rubber particles to cement-based materials. Professor Zhu of Arizona State University (now a professor of Tianjin University) found through research that mixing 760cm 3 The cement-based material can use at least 5 rubber particles produced by waste tires, and in August 2006, during the construction of the Erbaihu Dongkou Bridge on Wuxiang Road, Wuqing District, Tianjin, rubber aggregates were used for the first time in the world Concrete was used to pave the bridge deck. In the 7 years of use so far, no cracks or cracks have been found in the pavement layer. Based on the observation results, the engineering and economics of rubber aggr...

Claims

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Application Information

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IPC IPC(8): C04B18/22C04B28/00
CPCC04B14/02C04B14/08C04B14/10C04B18/02C04B18/22C04B20/02C04B28/00C04B40/0042C04B2111/50C04B2111/503C04B2201/50C04B14/06C04B14/00C04B22/002C04B2103/0068Y02W30/91
Inventor 杨蝉聪詹忠
Owner SICHUAN GOLDMILL ENVIRONMENTAL PROTECTION NEW MATERIALS
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