Fixing method of concrete drainage ditch expansion joint foam board

Abstract

The invention relates to a drainage ditch construction technology of constructional engineering, and provides a fixing method of a concrete drainage ditch expansion joint foam board. The fixing method comprises the following steps that 1, foam board fixing frames are manufactured by adopting cement mortar; 2, the two foam board fixing frames are vertically and oppositely arranged, the front surface and the back surface of the foam board are coated with adhesive water, then the foam board is placed between the two foam board fixing frames, and a foam board fixing device is formed through fixing; 3, before concrete pouring of a drainage ditch, the spliced foam board fixing device is subjected to mortar setting by using cement mortar, so that the foam board is accurately located at the position of an expansion joint; and 4, a formwork is installed, the drainage ditch is poured by using concrete, the foam board fixing device is poured and covered together, vibration and compaction are carried out, and the drainage ditch with the expansion joint foam board is formed after the concrete is condensed. The foam board fixing device is simple in structure and convenient to manufacture, the problems that the foam board cannot be fixed and is prone to deviation in the concrete pouring process are solved, the concrete construction quality of the drainage ditch is guaranteed, and the anti-leakage performance of the expansion joint of the drainage ditch is enhanced.

Description

technical field [0001] The invention relates to a drainage ditch construction technology for construction engineering. Background technique [0002] In the construction of common drainage ditches, most of them use plain concrete structures. This kind of drainage ditches must be provided with expansion joints at a certain length to avoid cracks. During construction, foam boards are filled between the expansion joints. The fixing measures of foam boards in the current construction method Most of them use two methods. One is to directly bind the side formwork. However, due to the small rigidity of the foam board, the fixing measures for the foam board during the construction site are not in place, which may easily cause the drainage ditch to be misaligned or even broken during the pouring process. Cause the axis deviation of the drainage ditch structure and the reduction of the local cross-sectional size; the other is to cut a small formwork of the same size as the foam board, ...

AI Technical Summary

Problems solved by technology

[0002] In the construction of common drainage ditches, most of them use plain concrete structures. This kind of drainage ditches must be provided with expansion joints at a certain length to avoid cracks. During construction, foam boards are filled between the expansion joints. The fixing measures of foam boards in the current construction method Most of them use two methods. One is to directly bind the side formwork. However, due to the small rigidity of the foam board, the fixing measures for the foam board during the construction site are not in place, which may easily cause the drainage ditch to be misaligned or even broken during the pouring process. Cause the axis deviation of the drainage ditch structure and the reduction of the local cross-sectional size; the other is to cut a small formwork of the same size as the foam board, fix the small formwork and the side formwork of the drainage ditch, and then fix the foam board on the small formwork In fact, this method needs to take out the small formwork after the drainage ditch is poured. This operation is very difficult and will lead to unsatisfactory structural quality of the expansion joint, and even affect the anti-leakage performance of the drainage ditch.

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