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Self-compacting mass concrete

A large-volume concrete and self-compacting technology, which is applied in the field of construction engineering, can solve problems affecting the quality of the structure, and achieve the effects of saving construction costs, reducing dosage, and increasing compactness

Inactive Publication Date: 2020-08-25
CHINA RAILWAY JIUJIANG BRIDGE ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are certain contradictions between the working performance of high-strength self-compacting mass concrete and its mechanical properties and durability, which affect the quality of the structure

Method used

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Embodiment Construction

[0015] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0016] A self-compacting large-volume concrete, the concrete is composed of cement, fly ash, natural medium-coarse sand, graded crushed stone, water, water reducing agent and modifier, and the dosage of each component of the concrete is as follows : Cement 416kg / m 3 ~474Kg / m 3 , fl...

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Abstract

The invention provides a self-compacting mass concrete. The concrete is composed of cement, fly ash, natural medium-coarse sand, graded broken stone, water, a water reducing agent and a modifier. Thedosage of each component of the concrete is as follows according to unilateral dosage meter: 416kg / m < 3 > to 474kg / m < 3 > of cement; 45Kg / m < 3 >-52Kg / m < 3 > of fly ash; 756Kg / m < 3 > to 787Kg / m <3 > of aggregate, 1004Kg / m < 3 > to 1045Kg / m < 3 > of graded broken stone, 162Kg / m < 3 > of water, 7.59 Kg / m < 3 > to 8.67 Kg / m < 3 > of water reducing agent and 45Kg / m < 3 > to 52Kg / m < 3 > of modifier. The adopted water reducing agent has double effects of water reducing and retarding so that the consumption of cement and water is greatly reduced on the premise of ensuring high flowability andhigh strength, and the construction cost can be saved; the adopted modifier has the properties of compactness enhancement, segregation resistance, corrosion resistance and the like, the compactness ofa concrete structure can be improved, the appearance quality of concrete pouring is improved, and the durability of the concrete is improved.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a self-compacting large-volume concrete. Background technique [0002] Self-compacting concrete refers to the characteristics of high fluidity, good cohesion, no segregation, and no bleeding. It can be filled with complex models without vibration or less vibration, and can pass through dense steel bars. And maintain its own uniformity and stability in this process. At the same time, self-compacting concrete also has other advantages, such as: speeding up construction, saving labor, improving concrete quality, reducing overall cost, etc. Therefore, its application is becoming more and more extensive. [0003] With the development of bridge construction in our country, more and more large bridges span mountains and valleys, rivers, lakes and seas. The harsh geographical environment conditions have higher and higher performance requirements for the bridge structur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/20
CPCC04B28/04C04B2111/20C04B18/08C04B14/06C04B14/02C04B20/0076C04B18/146C04B2103/302
Inventor 付小莲凌喜张园华李卫周赵东黎王员根龚士平焦剑英周辉郑周凯
Owner CHINA RAILWAY JIUJIANG BRIDGE ENG
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