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A kind of high wear-resistant concrete material and its preparation method and application

A concrete and high wear-resistant technology, applied in the field of building materials, can solve the problems of reduced wear resistance strength, unstable concrete performance, etc., and achieve the effects of reducing shrinkage deformation, significant energy saving and environmental protection benefits, and simple preparation process.

Inactive Publication Date: 2020-05-26
大足朝野混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vermiculite is rarely used in existing concrete materials, because vermiculite is absorbent, easy to absorb water in water, and expands at high temperatures, making it unstable in concrete performance and lower in wear resistance when used in this field

Method used

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  • A kind of high wear-resistant concrete material and its preparation method and application
  • A kind of high wear-resistant concrete material and its preparation method and application
  • A kind of high wear-resistant concrete material and its preparation method and application

Examples

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Effect test

Embodiment 1

[0022] In the embodiment of the present invention, a highly wear-resistant concrete material comprises the following steps: Portland cement 45kg, fine sand 23kg, polystyrene resin 11kg, cellulose diacetate 7kg, dimethyl sulfoxide 15kg, vermiculite 18kg.

[0023] Mix dimethyl sulfoxide with 4 times its mass of water to prepare a dimethyl sulfoxide solution. Mix and crush vermiculite and cellulose diacetate, pass through a 100-mesh sieve, then mix with dimethyl sulfoxide solution, heat to 75°C and seal and stir at this temperature for 1.8h, with a stirring speed of 200r / min. The precipitate was collected by centrifugation, washed and dried to obtain pretreated vermiculite; the centrifugal speed was 3000r / min, and the centrifugal time was 10min. Add polystyrene resin to the pretreated vermiculite, ball mill for 45min, and the mass ratio of ball to material during ball milling is 5:1. Then mix it with Portland cement and fine sand, and stir evenly; the stirring speed is 120r / min...

Embodiment 2

[0025] In the embodiment of the present invention, a highly wear-resistant concrete material comprises the following steps: Portland cement 55kg, fine sand 31kg, polystyrene resin 19kg, cellulose diacetate 15kg, dimethyl sulfoxide 25kg, vermiculite 26kg.

[0026] Mix dimethyl sulfoxide with 5 times its mass of water to prepare a dimethyl sulfoxide solution. Mix and crush vermiculite and cellulose diacetate, pass through a 150-mesh sieve, then mix with dimethyl sulfoxide solution, heat to 78°C and seal and stir at this temperature for 2 hours at a stirring speed of 220r / min. The precipitate was collected by centrifugal separation, washed and dried to obtain pretreated vermiculite; the centrifugal speed was 3000r / min, and the centrifugal time was 20min. Add polystyrene resin to the pretreated vermiculite, ball mill for 50min, and the mass ratio of ball to material during ball milling is 5:1. Then mix it with Portland cement and fine sand, and stir evenly; the stirring speed is...

Embodiment 3

[0028] In the embodiment of the present invention, a highly wear-resistant concrete material comprises the following steps: Portland cement 48kg, fine sand 25kg, polystyrene resin 13kg, cellulose diacetate 9kg, dimethyl sulfoxide 18kg, vermiculite 20kg.

[0029] Mix dimethyl sulfoxide with 5 times its mass of water to prepare a dimethyl sulfoxide solution. Mix and crush vermiculite and cellulose diacetate, pass through a 150-mesh sieve, then mix with dimethyl sulfoxide solution, heat to 76°C and seal and stir at this temperature for 1.9h, with a stirring speed of 220r / min. The precipitate was collected by centrifugal separation, washed and dried to obtain pretreated vermiculite; the centrifugal speed was 3000r / min, and the centrifugal time was 15min. Add polystyrene resin to the pretreated vermiculite, ball mill for 50min, and the mass ratio of ball to material during ball milling is 5:1. Then mix it with Portland cement and fine sand, and stir evenly; the stirring speed is ...

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Abstract

The invention discloses a high-wear-resistant concrete material as well as a preparation method and application thereof. The concrete material is prepared from the following materials in parts by weight, 45 to 55 parts of silicate cement, 23 to 31 parts of fine sand, 11 to 19 parts of polystyrene resin, 7 to 15 parts of cellulose diacetate, 15 to 25 parts of dimethyl sulfoxide, and 18 to 26 partsof vermiculite. The preparation method comprises the steps that the vermiculite and cellulose diacetate are mixed and crushed, and then mixed with a dimethyl sulfoxide solution, heated and sealed forstirring, a precipitate is collected by centrifugation, pretreated vermiculite is obtained by washing and drying the precipitate; the precipitate is added with a polystyrene resin to conduct ball milling, mixed with silicate cement and fine sand, and evenly mixed; pouring, vibrating, and curing are conducted. The high-wear-resistant concrete material has higher compressive strength and flexural strength, has significant improvement in VC value, impermeability grade, freeze-thaw strength, ultimate tensile, adiabatic temperature rise, chemical attack resistance and the like, effectively improvesimpact resistance, effectively improves resistant to erosion and abrasion, effectively reduces shrinkage deformation of concrete, improves crack resistance, and has excellent overall performance.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a highly wear-resistant concrete material and its preparation method and application. Background technique [0002] Concrete is a general term for engineering composite materials in which aggregates are cemented into a whole by cementitious materials. Generally speaking, the term concrete refers to the cement concrete obtained by using cement as the cementitious material, sand and stone as the aggregate; mixed with water (may contain admixtures and admixtures) in a certain proportion, and stirred. Concrete, which is widely used in civil engineering. However, ordinary cement concrete has disadvantages such as low compressive and flexural properties, low durability against environmental corrosion, and poor wear resistance. Especially in water conservancy projects, especially in large-scale water conservancy projects, concrete is the most important building material. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B111/20
CPCC04B28/04C04B2111/20C04B2201/50C04B14/06C04B24/2676C04B24/383C04B24/16C04B14/202
Inventor 杨改
Owner 大足朝野混凝土有限公司
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