Experimental investigation on the mechanical and interfacial properties of fiber-reinforced geopolymer layer on the tension zone of normal concrete
Experimental investigation on the mechanical and interfacial properties of fiber-reinforced geopolymer layer on the tension zone of normal concrete
复制标题
DOI：
10.1016/j.conbuildmat.2022.129568
复制
发表时间：
2022-12
影响因子：
7.4
通讯作者：
K. Shirai;Junta Horii;Koki Nakamuta;W. Teo
中科院分区：
文献类型：
--
作者：
K. Shirai;Junta Horii;Koki Nakamuta;W. Teo
研究了普通混凝土受拉区纤维增强地质聚合物（FRG）层的力学性能和界面性能。对使用北海道当地材料的FRG试拌进行了研究。在不同的混炼工艺、组分、聚乙烯醇纤维体积分数、固化条件和龄期下，对FRG试件进行了压缩和劈裂拉伸试验。对不同层厚的FRG-普通强度混凝土（NSC）复合材料试件进行了抗弯试验。通过将FRG层放置在复合材料试件的拉伸侧，弯曲强度和能量吸收显著增加。单独的NSC的弯曲强度为3.5 MPa，而FRG-NSC复合材料试样显示出6.1-6.6 MPa的更高的弯曲强度。此外，对FRG样品进行了XRD、FTIR和SEM分析。
This study aimed to understand the mechanical and interfacial properties of fiber-reinforced geopolymer (FRG) layer on the tension zone of normal concrete. A trial mix of FRG using local materials obtained in Hokkaido was investigated. Compression and splitting tensile tests on the FRG test pieces were conducted under different mixing procedures, constituents, volume fractions of the polyvinyl alcohol fiber, curing conditions, and ages. Flexural tests using FRG-normal strength concrete (NSC) composite specimens with different FRG layer thicknesses were carried out. By placing the FRG layer on the tension side of the composite specimen, the flexural strength and energy absorption were significantly increased. The flexural strength for the NSC alone was 3.5 MPa, while the FRG-NSC composite specimens showed higher flexural strengths of 6.1–6.6 MPa. Also, XRD, FTIR, and SEM analyses were carried out for the FRG samples.