Large plate mass concrete seamless construction method

Abstract

The invention relates to a large plate mass concrete seamless construction method which can be used for forming seamless large plate mass concrete structure without being provided with post-poured strips. The method comprises the following steps: (a) selecting cement: low-heat or medium-heat cement can be used; (b) adding adulterating agent: the FS-102 adulterating agent is added into the cement;(c) selecting aggregate, when fine aggregate is selected, medium-coarse sand with larger average grain diameter can be adopted; (d) pouring the concrete: the concrete is poured for once without cold seam in a construction section, and is sequentially vibrated and thickened; meanwhile, thermometer holes and cooling water circulation pipes with prescriptive number can be arranged inside the concrete; (e) maintaining the concrete: after the concrete is poured, an insulating layer is covered in time; (f) the surface of the concrete is flattened and trimmed for twice, and water is sprayed on the concrete for maintenance; (g) cooling water is filled into the laid cooling water circulation pipes, so as to lower the temperature inside the concrete.

Description

technical field [0001] The invention relates to a concrete seamless construction method, in particular to a large plate and large-volume concrete seamless construction method. Background technique [0002] Usually, during the construction of cast-in-place reinforced concrete for buildings, the newly poured concrete will shrink during the hardening process, and the built structure will expand when heated, and shrink when cooled. Most of the hardening and shrinkage of concrete will be completed in the first 1 to 2 months after construction, and the effect of temperature changes on the structure is frequent. When its deformation is constrained, temperature stress will be generated inside the structure, and cracks will appear in the component when it is severe. [0003] In order to solve the above problems, post-casting belts are usually set during construction, that is, in overly long buildings, joints with a width of 700-1000 mm are set every 30-40 meters, and the steel bars ...

AI Technical Summary

Problems solved by technology

[0004] However, if the post-pouring belt is left, not only the construction speed is slow, but also the operation is complicated and the procedures are numerous, and it is even impossible to chisel and clean the concrete construction joints at the post-pouring belt, and the quality of concrete pouring cannot be guaranteed. Two construction joints were formed at the pouring belt, which became the biggest hidden danger of water seepage

Furthermore, if the construction period catches up with the rainy season, it will be extremely unfavorable to the waterproofing of the post-pouring belt and the anti-corrosion of the steel bars.

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