掺氧化镁和纤维对混凝土抗拉强度的影响  

Effect on tensile strength of concrete mixed with magnesium oxide and polyethylene fiber

作　　者：颜少连 付体江[1] 罗雪[1] Yan Shaolian;Fu Tijiang;Luo Xue(Guizhou Institute of Water Resources Science,Guiyang 550002,China)

机构地区：[1]贵州省水利科学研究院,贵州贵阳550002

出　　处：《山西建筑》2023年第7期122-125,共4页Shanxi Architecture

基　　金：贵州省水利科技经费项目(KT202008,KT202207);贵州省水利科学研究院科研项目(ZC202005)。

摘　　要：为了探索复掺氧化镁(MgO)和聚丙烯纤维对面板混凝土抗拉强度的影响,通过不同的复掺MgO和聚丙烯纤维的掺量对混凝土抗拉强度的试验研究,揭示二者在混凝土复掺中的作用机理。结果表明,复掺MgO和聚丙烯纤维对混凝土的抗拉强度有明显影响,且随两者掺量的增加而越明显,但当两者掺量过大时,混凝土抗拉强度明显减小,所以从试验的角度揭示了混凝土的抗裂效应在复掺MgO和聚丙烯纤维适当的掺量下可以得到有效改善。In order to explore the effect on tensile strength of concrete mixed with magnesium oxide(MgO)and polyethylene fiber,this paper measured the tensile strength of concrete different admixtures of magnesium oxide and polypropylene fiber revealing the mechanism of compounding in concrete.The results showed that the compounding of MgO and polypropylene fiber has a significant effect on the tensile strength of concrete,and the more obvious with the increase of mixing amount.However,when the amount of both is too large,the tensile strength of concrete is significantly reduced.Therefore,it is revealed from the experimental point of view that the crack resistance effect of concrete can be effectively improved with the appropriate admixture of compound MgO and polypropylene fibers.

关 键 词：氧化镁 聚丙烯纤维 抗拉强度 混凝土 

分 类 号：TU528[建筑科学—建筑技术科学]