Single-ring porous construction device for removing unsolidified concrete pile head overall
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ANHUI UNIVERSITY OF ARCHITECTURE
- Publication Date
- 2020-02-28
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Abstract
Description
technical field
[0001] The invention belongs to the technical field of civil construction, and in particular relates to a single-ring porous construction device for integrally cutting uncured concrete pile heads. Background technique
[0002] During the pouring of cast-in-place concrete piles, due to vibration, the cement slurry will return upwards and rise together with the air bubbles inside the concrete, forming laitance within a certain range on the top of the pile, so the strength of the concrete at the pile head is difficult to guarantee; When pouring underwater concrete, the mud and mortar mixture at the head of the pile accumulates the most, resulting in loose concrete at the head of the pile, and the strength cannot meet the requirements. Therefore, during the construction of concrete pouring piles, the actual elevation of the pile head is required to be 500-1000mm higher than the design elevation, and the higher part is removed manually or mechanically, which is us...