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混凝土压模路面面层常出现起皮脱落现象(图1),本文从出现该情况的原因、控制要点和整改措施几方面进行分析。(a)(b)图1混凝土压模路面面层起皮脱落(a)起皮;(b)脱落原因分析(1)混凝土振捣不均匀、不密实以及提浆不够等造成混凝土强度不够。(2)混凝土施工完毕后未覆盖薄膜并浇水养护,导致强度不够。(3)初凝时间过长,压模最佳时机已过,在压模过程中振裂,混凝土无法终凝或终凝不完全。(4)强化料及脱模剂等材料质量问题。(5)施工工人操作水平不同、彩色强化料厚薄不均、混凝土浆结合不够和脱模粉撒得不均匀造成脱模不彻底。
Concrete poultices often appear on the road surface peeling phenomenon (Figure 1), this article from the emergence of the reasons for the control points and corrective measures in several areas for analysis. (a) (b) Fig. 1 Peeling and peeling of the surface of concrete stamper (a) Peeling off; (b) Analysis of falling reasons (1) The concrete is not strong enough due to uneven vibrating concrete, insufficient density and insufficient pulp feeding. (2) After the concrete construction is not covered with film and water conservation, resulting in insufficient strength. (3) The initial setting time is too long, the best time has passed, the mold during the vibration cracking, concrete can not final setting or final setting is not complete. (4) strengthen the material and release agent material quality problems. (5) The level of operation of construction workers is different, uneven color thickness of the material, the combination of concrete slurry is not enough and demoulding powder scattered uneven demolding is not complete.