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Concrete and its preparation method

A technology of concrete and montmorillonite, applied in the field of building materials, can solve the problems of poor impact resistance of concrete

Active Publication Date: 2016-05-04
ANHUI HUAYE CONSTR ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of poor impact resistance of concrete for structures such as bridges, roads, and dams with relatively large impact loads in the prior art, and provide a kind of concrete with excellent impact resistance and a preparation method thereof

Method used

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  • Concrete and its preparation method

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preparation example Construction

[0010] The invention provides a method for preparing concrete, wherein, the method is to mix cement, sand, stones, water, water reducer, plant fiber and montmorillonite; wherein, relative to 1000kg of stones, the cement The consumption of the water is 400-500kg, the consumption of the sand is 300-450kg, the consumption of the water is 150-250kg, the consumption of the water reducer is 0.5-2kg, the consumption of the plant fiber is 10-20kg, the The consumption of montmorillonite is 50-80kg.

[0011] The concrete prepared by the method provided by the invention has excellent impact resistance, which is reflected by compressive strength parameters and splitting strength parameters, and the higher the compressive strength parameters and splitting strength parameters, the better the impact resistance.

[0012] In the present invention, the shape and size of stones, sand, plant fibers and montmorillonite are not particularly limited. In order to improve the impact resistance of the ...

Embodiment 1

[0021] At 25°C, mix 1000kg of stones with a particle size of 10mm, 400kg of portland cement with a label of 42.5, 300kg of river sand with a particle size of 0.3mm, 150kg of water, 0.5kg of lignosulfonate water reducer and straw fiber 10kg was mixed and stirred for 10 minutes, and then 50kg of montmorillonite with a particle size of 0.1mm was added and mixed and stirred for 200 minutes to make concrete product A1, wherein the length of straw fibers was 40mm, and the cross-section in the longitudinal direction was circular with a diameter of 1mm. Then, after 3 days, 10 days and 30 days, A1 was tested for compressive strength and splitting strength, and the test results are shown in Table 1.

Embodiment 2

[0023] At 25°C, mix 1000kg of stones with a particle size of 20mm, 500kg of Portland cement with a label of 42.5, 450kg of river sand with a particle size of 0.5mm, 250kg of water, and 20kg of lignosulfonate water reducer and stir for 10 minutes. , and then add 80 kg of montmorillonite with a particle size of 0.4 mm, mix and stir for 200 min to make concrete product A2, wherein the length of the straw fiber is 50 mm, and the cross-section in the length direction is circular with a diameter of 2 mm. Then, after 3 days, 10 days and 30 days, A2 was tested for compressive strength and splitting strength, and the test results are shown in Table 1.

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Abstract

The invention discloses concrete and a preparation method thereof. The preparation method is characterized by mixing cement, sand, stones, water, water reducing agents, plant fibers and montmorillonite, wherein relative to 1000kg of stones, the amount of the cement is 400-500kg, the amount of the sand is 300-450kg, the amount of the water is 150-250kg, the amount of the water reducing agents is 0.5-2kg, the amount of the plant fibers is 10-20kg, and the amount of montmorillonite is 50-80kg. The concrete provided by the invention has excellent impact resistance.

Description

technical field [0001] The invention relates to the field of building materials, in particular to concrete and a preparation method thereof. Background technique [0002] The preparation of concrete in the prior art is only prepared by mixing cement, sand, stones, water and water reducing agent. The advantages of such concrete are high compressive strength, easy material acquisition, easy molding, low price, and can be combined with steel It is made into various load-bearing components, but its Achilles heel is low tensile strength, high brittleness, easy cracking, and poor toughness, thereby reducing the bearing capacity of the concrete structure and shortening the service life, becoming a hidden danger of various disasters. In particular, its impact resistance is poor, and it is prone to brittle fracture and falling off under impact load. Therefore, for structures such as bridges, roads, and dams with relatively large impact loads, it is an urgent problem in this field to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B18/24
CPCY02W30/91
Inventor 李秉华
Owner ANHUI HUAYE CONSTR ENG GRP