Massive concrete pouring method

Abstract

The invention discloses a massive concrete pouring method. The massive concrete pouring method comprises the steps of erecting of formworks, grout making, pouring, curing, secondary pouring and the like. The ratio of the length of cooling pipes to the size of a grouting body serves as a guidance parameter for distributing the cooling pipes, so that the difficulty of secondary grouting is lowered on the premise of ensuring the proper cooling capacity of the cooling pipes, and the usage quantity of the cooling pipes and the cost are reduced; galvanized corrugated pipes or finned galvanized steel pipes are used as the cooling pipes, the contact area between the cooling pipes and the pouring body is enlarged, the stress direction is changed, and complete planar stress is changed to arc stress along the surfaces of the corrugated pipes; part of ice blocks are used for replacing part of water to carry out mixed grout making, and ice particles absorb hydration heat and melt gradually; temperature is not increased while the melting ice particles absorb a large amount of hydration heat, evaporate, dissipate and melt into water, so that the temperature inside the pouring body is further decreased.

Description

technical field [0001] The invention relates to a construction method of a grouting body, in particular to a large-volume concrete pouring method. Background technique [0002] At present, micro-expansion grouting materials are more and more commonly used in the secondary grouting of equipment foundations. The product features are as follows: [0003] Early strength, high strength: 1-3 days compressive strength above 30-50Mpa; anti-segregation performance: high-strength non-shrinkage grouting material overcomes the segregation phenomenon caused by excessive water addition in field use; green environmental protection: does not contain benzene series , halogenated hydrocarbons, formaldehyde, heavy metals and other components, non-toxic, tasteless, non-polluting, non-flammable and non-explosive, can be transported as general cargo; micro-expansion: ensure close contact between equipment and foundation, no shrinkage after secondary grouting; self-flowing High performance: it ca...

AI Technical Summary

Problems solved by technology

[0004] In the current construction technology, the volume of grouting construction is not large, which can be realized by conventional means, but for the volume larger than 50M 3 There is no precedent and no successful experience for reference, and the pouring of grouting materials is different from the pouring of concrete, because the content of cementitious materials in grouting materials is far greater than that in concrete, so The heat generated by the cementitious material in the concrete during the hydration process is far less than the heat generated by the cementitious material in the grouting material, resulting in the grouting body being easily affected by the heat during the pouring forming process, resulting in cracks, cracks, etc. question

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