Fiberglass Grids as Sustainable Reinforcement of Historic Masonry.
Fiberglass Grids as Sustainable Reinforcement of Historic Masonry.
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DOI：
10.3390/ma9070603
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发表时间：
2016-07-21
期刊：
影响因子：
--
通讯作者：
Borri A
中科院分区：
文献类型：
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作者：
Righetti L;Edmondson V;Corradi M;Borri A
纤维增强复合材料(FRP)已获得越来越多的成功，主要用于加固、翻新和修复现有的历史砖砌结构，并可能导致加固构件的力学性能显著提高。本文总结了以往旨在研究玻璃纤维增强聚合物(GFRP)格栅嵌入无机砂浆加固历史建筑的效果的试验结果。本文还对玻璃钢格栅的耐久性与控制材料性能之间的关系进行了创新性研究。在水溶液中老化前后，用从GFRP格栅上切下的试件测量了拉伸强度。商用玻璃钢格栅在去离子水和氯化钠溶液中储存了450天后，进行了拉伸强度测试。拉伸强度和杨氏模量分别下降了30.2%和13.2%。这种退化表明，在潮湿环境中长时间储存可能会导致力学性能下降。
Fiber-reinforced composite (FRP) materials have gained an increasing success, mostly for strengthening, retrofitting and repair of existing historic masonry structures and may cause a significant enhancement of the mechanical properties of the reinforced members. This article summarizes the results of previous experimental activities aimed at investigating the effectiveness of GFRP (Glass Fiber Reinforced Polymers) grids embedded into an inorganic mortar to reinforce historic masonry. The paper also presents innovative results on the relationship between the durability and the governing material properties of GFRP grids. Measurements of the tensile strength were made using specimens cut off from GFRP grids before and after ageing in aqueous solution. The tensile strength of a commercially available GFRP grid has been tested after up 450 days of storage in deionized water and NaCl solution. A degradation in tensile strength and Young’s modulus up to 30.2% and 13.2% was recorded, respectively. This degradation indicated that extended storage in a wet environment may cause a decrease in the mechanical properties.