自密实钢纤维超高强混凝土试验

发布时间：2018-04-15 10:39

  本文选题：钢纤维 + 超高强混凝土　； 参考：《土木工程与管理学报》2017年02期

【摘要】：测试了水胶比、减水剂掺量、钢纤维用量、微硅粉及矿粉掺量对超高强混凝土流动性、抗压强度及抗折强度的影响,对比分析了各因素影响作用的大小。结果表明:在试验范围内,水胶比、减水剂掺量及钢纤维用量对混凝土流动度及强度均有显著影响;在水胶比为0.20~0.22的情况下,掺入不低于2%的减水剂、不大于2.5%的钢纤维、4%~6%的微硅粉、10~15%的矿粉可制备得到抗压强度大于120 MPa、抗折强度大于20 MPa的自密实超高强混凝土。
[Abstract]:The effects of water / binder ratio, water reducing agent content, steel fiber content, micro-silica powder and mineral powder on the fluidity, compressive strength and flexural strength of ultra-high strength concrete were tested.The results show that the water / binder ratio, water reducing agent content and steel fiber content have significant effects on the fluidity and strength of concrete, and when the water / binder ratio is 0.20% 0.22, the water reducing agent is not less than 2%.Self-compacting ultra-high strength concrete with compressive strength of more than 120MPa and flexural strength of more than 20 MPa can be prepared by using steel fiber with less than 2.5% steel fiber and 6% micro-silica powder and 1015% mineral powder with compressive strength of more than 120MPa and flexural strength of more than 20 MPa.
【作者单位】： 派丽_掣，

本文编号：1753789