A kind of semi-rigid concrete and its preparation process

A concrete and semi-rigid technology, applied in the field of semi-rigid concrete and its preparation, can solve the problems of high rigidity, concrete cracks or fractures, large elastic modulus of concrete, etc., and achieve the effects of simple processing and production, realization of reuse, and easy storage
CN103641417BActive Publication Date: 2017-01-18THE FOURTH ENG CO LTD OF CHINA RAILWAYNO 20 BUREAU GRP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
THE FOURTH ENG CO LTD OF CHINA RAILWAYNO 20 BUREAU GRP
Publication Date
2017-01-18

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Abstract

The invention discloses semi-rigid concrete and a preparation process thereof. The semi-rigid concrete is concrete which is prepared through replacing part of fine aggregate of ordinary concrete with a flexible material and then blending, wherein the mass of the replaced fine aggregate is equal to that of the replacing flexible material; the flexible material contains the following ingredients in percentage by mass: 30-40% of rubber powder, 30-40% of rubber grains, 0.5-1.5% of polypropylene fibers, 3-8% of fly ash and 20-28% of mineral admixture; zinc stearate is required to be removed from the surfaces of the rubber grains and the surface of the rubber powder through a strong-base solution. The preparation process comprises the steps: (1) preparing the flexible material and carrying out grading combination in proportion; (2) preparing the semi-rigid concrete. According to the preparation process disclosed by the invention, the steps are simple, the operation is simple and convenient, the invested cost is low, the use effect is good, and the defects in the existing ordinary concrete that the deformation is little, the brittleness is high, the tensile strength is low, and the like can be made up.
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Description

technical field

[0001] The invention belongs to the technical field of concrete preparation, and in particular relates to a semi-rigid concrete and a preparation process thereof. Background technique

[0002] With the rise of the modern construction industry, concrete, an engineering material, is widely used in different types of civil engineering construction. Since the biggest feature of concrete materials is high compressive strength and low tensile strength, concrete materials are mainly used for load-bearing structure. However, with the development of engineering technology, concrete, a rigid material with high strength and small deformation, gradually shows its limitations. Nowadays, there is a special desire for a semi-rigid material between rigid materials and flexible materials. , that is, a concrete material appears, which not only has the same strong load-bearing capacity as reinforced concrete (or slightly lower strength requirements), but also has strong tensil...

Claims

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