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Experimental Research on Bond Behaviour of Fabric Reinforced Cementitious Matrix Composites for Retrofitting Masonry Walls
International Journal of Concrete Structures and Materials ( IF 3.4 ) Pub Date : 2021-04-29 , DOI: 10.1186/s40069-021-00460-1
Fayu Wang , Nicholas Kyriakides , Christis Chrysostomou , Eleftherios Eleftheriou , Renos Votsis , Rogiros Illampas

Fabric reinforced cementitious matrix (FRCM) composites, also known as textile reinforced mortars (TRM), an inorganic matrix constituting fibre fabrics and cement-based mortar, are becoming a widely used composite material in Europe for upgrading the seismic resistance of existing reinforced concrete (RC) frame buildings. One way of providing seismic resistance upgrading is through the application of the proposed FRCM system on existing masonry infill walls to increase their stiffness and integrity. To examine the effectiveness of this application, the bond characteristics achieved between (a) the matrix and the masonry substrate and (b) the fabric and the matrix need to be determined. A series of experiments including 23 material performance tests, 15 direct tensile tests of dry fabric and composites, and 30 shear bond tests between the matrix and brick masonry, were carried out to investigate the fabric-to-matrix and matrix-to-substrate bond behaviour. In addition, different arrangements of extruded polystyrene (XPS) plates were applied to the FRCM to test the shear bond capacity of this insulation system when used on a large-scale wall.



中文翻译:

织物增强水泥基复合材料砌筑墙体粘结性能的试验研究。

织物增强水泥基复合材料(FRCM)也称为纺织增强砂浆(TRM),构成纤维织物的无机基体和水泥基砂浆,在欧洲已成为一种广泛使用的复合材料,用于提高现有增强混凝土的抗震性( RC)框架建筑物。一种提高抗震性的方法是通过将FRCM系统应用到现有砌体填充墙上以增加其刚度和完整性。为了检验本申请的有效性,需要确定在(a)基质与砖石基材之间以及(b)织物与基质之间实现的粘结特性。一系列实验,包括23种材料性能测试,15种干织物和复合材料的直接拉伸测试,并进行了30次基体与砖砌体之间的剪切粘结试验,以研究织物与基体以及基体与基底的粘结行为。此外,将不同排列的挤塑聚苯乙烯(XPS)板应用于FRCM,以测试该绝缘系统在大规模墙壁上使用时的剪切粘结能力。

更新日期:2021-04-29
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