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对PVA-SHCC的高温后力学性能进行了试验研究,观察高温后掺加北京纤维和日本纤维的高性能混凝土的抗压、抗折强度以及质量损失的不同,并分析了在各个温度区间内抗压、抗折强度降低以及质量损失的原因。结果表明:高温对PVA-SHCC的质量损失影响严重,对PVA-SHCC的力学性能也产生了重大影响,但是由于日本纤维和北京纤维的熔点不同,在相同的温度区间内力学性能及质量损失不同。
The mechanical properties of PVA-SHCC after high temperature were studied. The compressive strength, flexural strength and mass loss of HPC mixed with Beijing fiber and Japanese fiber after high temperature were observed. The effects of internal resistance Pressure, reduced flexural strength, and the cause of mass loss. The results show that the high temperature has a serious impact on the mass loss of PVA-SHCC and also has a significant effect on the mechanical properties of PVA-SHCC. However, due to the different melting points of Japanese and Beijing fibers, the mechanical properties and mass loss are different in the same temperature range .