所有这些测试是用来检测表面裂缝不连续性。
All of these tests are used to detect surface crack discontinuities.
由于管片内部裂缝观测难以实现，故重点研究了表面裂缝的影响。
Because the observation of interior crack is not always available, this paper laid emphasis on surface crack of segments.
大体积混凝土在桥梁施工过程中，由于水泥水化热容易引起表面裂缝。
During the mass concrete construction in bridge structure, the cement hydration heat is easy to cause surface cracking.
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