Method for preventing fissures of large concrete pool

A concrete and reinforced concrete technology, which is applied in the processing of building materials, construction, building construction, etc., can solve problems such as concrete cracking, achieve the effects of controlling cracks, reasonable and effective construction, and improving construction quality

Inactive Publication Date: 2014-01-15
CHINA SIXTH METALLURGICAL CONSTR
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  • Abstract
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Problems solved by technology

[0003] In order to solve the problem of concrete cracking caused by temperature difference, the present invention reduces the temperature rise of concrete, delays the cooling rate of concrete, reduces the shrinkage of concrete, and improves the ultimate stretch of concrete by controlling the temperature difference, the material of concrete, and the construction of concrete. The purpose of controlling cracks in large reinforced concrete pools during construction

Method used

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Embodiment Construction

[0005] 1. Material measures to control temperature cracks during construction.

[0006] 1.1 Select low-heat cement: low-heat slag Portland cement has a hydraulic cementitious material with low heat of hydration, and the aluminum content in low-heat slag Portland cement is low, so the corresponding heat of hydration is less and the temperature rise is less. It is more conducive to crack resistance.

[0007] 1.2 Reduce the amount of cement: The walls of large reinforced concrete pools are generally thin, and the temperature rise of the concrete may cause cracks in the pool at the initial stage, while the heat in the concrete is mainly generated by the hydration reaction of cement. Some data show that the unit cement consumption per increase If the temperature is reduced by 10kg, the temperature will increase or decrease by 10°C accordingly, so reducing the amount of cement has a significant effect on crack control. Use fly ash (or materials mixed with volcanic ash) in reinfo...

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Abstract

The invention discloses a method for preventing fissures of a large concrete pool. According to the method for preventing the fissures of the large concrete pool, the temperature difference, the materials of concrete and construction of the concrete are controlled, and then temperature rising of the concrete is reduced, the rate of temperature fall of the concrete is reduced, contraction of the concrete is reduced and ultimate tensile strength of the concrete is achieved to further control the fissures of the large concrete pool during construction. When the method is used for controlling construction, the fissures of the large reinforced concrete pool can be effectively prevented from being generated, construction quality is improved, and construction can be carried out reasonably and effectively.

Description

technical field [0001] The invention relates to the field of construction, in particular to a method for preventing cracks in large concrete pools. Background technique [0002] Cracks in large reinforced concrete pools are the most common defects in reinforced concrete projects, especially when the concrete has just been poured during the construction period and cracks occur under non-loading. Cracks during this period are usually caused by temperature. During the construction period of a large reinforced concrete pool, due to the large amount of heat of hydration generated in the concrete, and the poor thermal conductivity of the concrete, the heat dissipation speed is slow, so the internal temperature of the pool wall and the bottom plate is relatively high; at the same time, the concrete surface of the pool wall and the bottom plate and the External contact, heat dissipation is faster, so no matter in the process of heating up or cooling down, even in the later stage of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G21/02C04B28/08
Inventor 陈玲风杨蕾涛李松向继辉
Owner CHINA SIXTH METALLURGICAL CONSTR
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