Repair method of concrete expansion mold
A technology for concrete and concrete surfaces, which is applied in building maintenance, construction, building construction, etc. It can solve the problems of low construction efficiency and inability to apply concrete surface chiseling, etc., and achieve the effect of improving construction efficiency
Active Publication Date: 2017-09-15
CHINA CONSTR EIGHT ENG DIV CORP LTD
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Problems solved by technology
[0008] However, in this method, the concrete expansion part is all finely chiseled by workers with small hammers manually, the construction efficiency is low, and it is not suitable for chiseling on the concrete surface of large-scale expansion
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[0047] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0048] see first figure 1 and figure 2 As shown, the reinforced concrete structure 10 is composed of a steel bar structure 16 and concrete poured on the steel bar structure 16. The concrete on the surface of the steel bar structure 16 forms a steel bar protection layer for protecting the steel bar structure and preventing the influence of the carbonation of the concrete on the steel bar structure.
[0049] In the concrete pouring construction of the reinforced concrete structure 10, due to problems such as the slump and fluidity of the poured concrete and the displacement of the formwork, the phenomenon of mold expansion often occurs, and the position of the mold expansion is on the concrete surface 11 after pouring. Concrete blocks protruding outward will be formed, which are called the expanded mold part 12 of the concrete, thereb...
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The invention discloses a method for repairing concrete expansion molds, which comprises the steps of: grinding the outer side of the expansion mold part on the surface of the concrete structure to form a smooth section surrounding the outer side of the expansion mold part; using electric tools to smooth the smooth surface section Chisel off the expanded part of the mold to obtain the chiseled concrete surface; chisel the chiseled concrete surface to form a rough surface; repair the surface of the concrete structure. The invention adopts the combination of electric chisel removal, electric chisel thinning and manual chisel thinning, and uses three chisel chisels to sequentially chisel the expansion part of the concrete surface, which can not only improve the construction efficiency, but also use the pre-polished smooth surface section , to ensure the chisel range of electric chisel removal, to avoid damage to the normal concrete surface and to avoid damage to the steel structure.
Description
technical field [0001] The invention relates to the field of engineering construction, in particular to a method for repairing concrete swelling molds. Background technique [0002] Nowadays, pumping concrete is mostly used for pouring concrete. The slump and fluidity of pumping concrete are relatively large, and the amount of concrete poured at one time is large and fast, which will easily cause further increase in the pressure on the lower side of the formwork; and when pouring concrete The concrete itself exerts a great pressure on the lower side of the formwork; and sometimes the vibrator cannot vibrate according to the operation regulations, which will easily cause the formwork to expand, affect the flatness and verticality of the concrete surface, and affect the subsequent plastering. Ash work. [0003] The general repair method for concrete expansion mold is: [0004] 1. Firstly, chisel away the concrete that is to be repaired in the expansion part, and chisel it ca...
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IPC IPC(8): E04G23/02
Inventor 王传博孙姝瑾陈鹏郭春华李伟
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD