超强韧性聚丙烯纤维混凝土的性能与使用研究

中图分类号：TU528.572 文献标志码：A 文章编号：2095-2945(2025)30-0073-04

Abstract:Thispaperstatesthat polypropylenefiberconcretecansignificantlyimprovethetoughnessandcrackresistanceof concrete,formathre-dimensionalnetworkstructure,andefectivelypreventcrackpropagation.Byoptimizingthemixratioand adjustingtheagregategrading,theworkabilityandfluidityoftheconcretecanbeimproved，whileimprovingitsstrengthand durability.Thestudyalsodiscusedtheefectsofdiferentparticlegradations，mixingsequencesandtimeintervals,andtheuse ofaditivesonconcretepeformance,emphasizing theimportanceofreasonable designandconstruction.Themechanismof the self-healingphenomenonof polypropylene fiberconcreteandthemeasures toimprovetheself-healingabilityarediscued.

Keywords: polypropylene fiber;toughnes;crack resistance;three-dimensional network structure；self-healing

高强混凝土是现代建筑的关键材料，但其脆性大，易在重载或地震下开裂，威胁建筑安全。（剩余6987字）