玄武岩纤维增强泡沫混凝土韧性及抗压强度试验研究  

Experimental study on toughness and compressive strength of basalt fiber reinforced foamed concrete

作　　者：詹奇淇 詹炳根[1,2] ZHAN Qiqi;ZHAN Binggen(School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China;Anhui Civil Engineering Structures and Materials Laboratory, Hefei 230009, China)

机构地区：[1]合肥工业大学土木与水利工程学院,安徽合肥230009 [2]安徽土木工程结构与材料省级实验室,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2020年第5期667-672,共6页Journal of Hefei University of Technology：Natural Science

摘　　要：文章以2种密度等级(密度分别为400~500 kg/m^3和600~700 kg/m^3)的泡沫混凝土为基础,选用不同体积掺量和长径比的玄武岩纤维,研究其对不同密度等级泡沫混凝土韧性及抗压强度的影响规律。结果表明:玄武岩纤维的加入使得泡沫混凝土由脆性材料变为弹塑性材料,很好地增强了泡沫混凝土的韧性;在适宜的掺量和长径比下,相对于不掺纤维的泡沫混凝土,400~500 kg/m^3级泡沫混凝土抗压强度可达6.09 MPa,增长52.3%,600~700 kg/m^3级泡沫混凝土抗压强度可达6.65 MPa,增长33%。玄武岩纤维增强泡沫混凝土抗压强度效果显著。Based on two density grades of foamed concrete(400500 kg/m^3 and 600700 kg/m^3),basalt fibers with different additions and length-to-diameter ratios are used to study the toughness and the compressive strength of foamed concrete with different density grades.The results show that the addition of basalt fiber makes the foamed concrete change from brittle to elastoplastic material,which greatly enhances the toughness of the foamed concrete.Under appropriate additions and length-to-diameter ratios,the compressive strength of foamed concrete from 400 kg/m^3 to 500 kg/m^3 can reach 6.09 MPa,an increase of 52.3%,and that of foamed concrete from 600 kg/m^3 to 700 kg/m^3 can reach 6.65 MPa,an increase of 33%,compared to unblended foamed concrete.Basalt fiber has a significant effect on improving the compressive strength of foamed concrete.

关 键 词：泡沫混凝土 玄武岩纤维 韧性 抗压强度 

分 类 号：TU528.572[建筑科学—建筑技术科学]