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Anti-cracking concrete for high temperature desert environment and preparation method thereof

A concrete and desert technology, applied in the field of concrete, can solve the problems of untimely and insufficient maintenance of concrete, achieve high strength, convenient transportation, and improve economic efficiency

Inactive Publication Date: 2016-09-28
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Changes in the construction environment, differences in the quality of construction personnel, and limitations in actual conditions often lead to untimely or insufficient maintenance of concrete, and early micro-cracks are prone to appear

Method used

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  • Anti-cracking concrete for high temperature desert environment and preparation method thereof

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Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with specific embodiments.

[0029] A crack-resistant concrete suitable for high-temperature desert environments. It uses P.O42.5 cement and stones with a maximum particle size of no more than 20mm. The ratio of coarse and fine stones is 2:3. Add mineral admixtures namely fly ash and slag, microfiber (carbon fiber, polypropylene microfiber, wood fiber), superabsorbent resin (SAP), corn straw powder and water as the main raw materials, through the most compact stacking, to ensure Close packing of aggregates.

[0030] The anti-crack concrete under the high-temperature desert environment provided by the present invention is made according to the following method, and its steps are:

[0031] Concrete ratio: The ratio design is carried out according to the water-binder ratio of 0.3-0.4 and the concrete density is assumed to be 2450kg / m 3 design. Among them, when the water-binder ratio is 0.3-0.35, the ...

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Abstract

The invention provides anti-cracking concrete for a high temperature desert environment and a preparation method thereof. The preparation method comprises putting P. O42.4 cement, cobblestones with the largest particle size less than or equal to 20mm, sand, fly ash and slag into a forced mixer, adding water with mass of m1 into the mixer, carrying out stirring for 2-3min, mixing water-absorbent resin and water with mass of m2, carrying out presaturation according to a ratio of water-absorbent resin to water of 1: 30, adding the mixture into the mixer, adding microfibers and an active exciting agent into the mixer, carrying out stirring for 1-2min, adding corn straw powder into water with mass of m3, putting the mixture into the mixer, carrying out uniform stirring, then opening a material door and carrying out construction. The anti-cracking concrete for a high temperature desert environment can be used for concrete projects such as a large-scale water pool and a highway with high durability and strength requirements.

Description

technical field [0001] The invention relates to concrete, in particular to a crack-resistant concrete for high-temperature desert environment. The invention also relates to a method for preparing concrete. Background technique [0002] In desert areas where vegetation is scarce and water is scarce, ordinary concrete will have a large number of cracks due to high temperature and dry climate, large cement hydration heat, slow heat dissipation of concrete, and uneven internal and external heat dissipation, which will affect the durability of concrete to a certain extent. and strength. At the same time, there are certain difficulties in the construction under this environment, and the maintenance process is complicated and the cost is high. Therefore, the concrete in the high temperature desert environment should choose the appropriate basic theory, mix ratio and building materials to meet the durability and strength requirements of the concrete. [0003] Changes in the const...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B14/02C04B20/00C04B18/08C04B18/14C04B18/24C04B14/38C04B16/06C04B16/02C04B14/06C04B24/26
CPCC04B20/0076C04B28/04C04B2111/343C04B2201/50C04B14/02C04B14/06C04B18/08C04B18/141C04B20/006C04B14/386C04B16/0633C04B16/02C04B18/24C04B22/002C04B2103/0068C04B24/2652Y02W30/91
Inventor 吕建福尉天凤郭庆勇杨凯
Owner HARBIN ENG UNIV