Continuous pouring seamless construction method of expansive concrete reinforcing band replacing post-pouring band

A technology of expansive concrete and expansive reinforcement strips, which is applied in the fields of architecture, strength characteristics, and building structures, can solve problems such as inability to accurately reflect the actual strength of structures, insufficient humidity in concrete, and a large amount of evaporation of concrete moisture, to achieve Maintain the strength and various properties, prevent the cement from continuing to hydrate, and avoid the effect of increasing drying shrinkage
CN109853957AInactive Publication Date: 2019-06-07POWERCHINA CONSTR GRP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
POWERCHINA CONSTR GRP
Publication Date
2019-06-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of construction, and discloses a continuous pouring seamless construction method of an expansive concrete reinforcing band replacing a post-pouring band. The continuous pouring seamless construction method comprises the steps that reinforcing cages and supporting templates are manufactured; concrete outside the expansive reinforcing band is poured; concrete inside the expansive reinforcing band is poured; vibrating compaction and maintenance are carried out; and templates are removed, and the shrinkage and cracking conditions of the concrete are detected. According to the continuous pouring seamless construction method of the expansive concrete reinforcing band replacing the post-pouring band, the post-pouring band is replaced with the expansiveconcrete reinforcing band, the mixing amount of a high-effect expanding agent in the concrete outside and inside the expansive reinforcing band is reasonably designed, outside the expansive reinforcing band is 8%-10%, and inside the expansive reinforcing band is 12%-13% ( equivalent replacement cement); so that the expansion rate of the concrete at the most prone to cracking positions is improved, the tensile stress in the concrete at the most prone to cracking positions is eliminated, the cracking is avoided, the compactness of the concrete is further improved, and the strength, crack resistance and seepage-proofing performance of the concrete are improved; and meanwhile, the construction period is shortened, and the effect is remarkable.
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Description

technical field

[0001] The invention belongs to the technical field of construction, and in particular relates to a continuous pouring seamless construction method in which an expansive concrete reinforcing belt replaces a post-casting belt. Background technique

[0002] At present, the existing technologies commonly used in the industry are as follows:

[0003] During concrete construction, in order to adapt to environmental temperature changes, concrete shrinkage, uneven settlement of the structure and other factors, the beams, slabs (including the foundation floor), walls and other structures have a certain width and are poured after a certain period of time. Concrete strips are temporary construction joints left at the corresponding positions of foundation slabs, walls, and beams in accordance with design or construction specifications. The method of reserving post-pouring strips effectively avoids the harmful cracks that may occur in the cast-in-place reinforced concre...

Claims

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