- 李福海1，李继芸1，唐慧琪1，穆勃江1，姜怡林1，冯 立2
2022年第8期
摘要
引用本文
摘 要：研究了水胶比、砂胶比、钢纤维掺量、合成粗纤维掺量以及混掺钢纤维和合成粗纤维对超高性能混凝土（UHPC）力学性能的影响。结果表明：水胶比越小、砂胶比越大，UHPC的抗折、抗压强度越高；单掺钢纤维时，UHPC的抗折、抗压强度随钢纤维掺量的增加总体呈增大趋势，钢纤维的最佳掺量为2.0%；单掺合成粗纤维时，UHPC的抗折、抗压强度随合成粗纤维掺量的增加总体呈先增大后减小的趋势，合成粗纤维的最佳掺量为2.0%；混掺钢纤维和合成粗纤维且钢纤维掺量≤2.0%时，合成粗纤维掺量宜≤1.0%。
Abstract: The effects of water-binder ratio, sand-binder ratio, steel fiber content, synthetic coarse fiber content, and blend of steel fiber and synthetic coarse fiber on the mechanical properties of ultra-high performance concrete(UHPC) were studied. The results show that the smaller the water-binder ratio and the larger the sand-binder ratio, the higher the flexural and compressive strength of UHPC. When the steel fiber is mixed alone, the flexural and compressive strength of UHPC generally increase with the increase of the steel fiber content, and the optimal steel fiber content is 2.0%. When the synthetic coarse fiber is mixed alone, the flexural and compressive strength of UHPC generally increase first and then decrease with the increase of the synthetic coarse fiber content, and the optimal synthetic coarse fiber content is 2.0%. When mixing steel fiber and synthetic coarse fiber and the content of steel fiber is ≤2.0%, the content of synthetic coarse fiber should be ≤1.0%.
李福海,李继芸,唐慧琪,等.混杂纤维UHPC力学性能试验研究[J].混凝土与水泥制品,2022(8):56-59.
LI F H,LI J Y,TANG H Q,et al.Experimental Study on Mechanical Properties of Hybrid Fiber UHPC[J].China Concrete and Cement Products,2022(8):56-59.
