期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 314, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2021.125705
关键词
Polymer concrete; PVA fibers; Carbon fibers; Glass fibers; Steel fibers; Epoxy; Strain-hardening; Carbon footprint; Resilience; Acid resistance
资金
- Canada-India Research Centre of Excellence (IC-IMPACTS)
The compressive strength, permeable porosity, and uniaxial tensile stress-strain behavior of polymer concrete reinforced with glass, carbon, PVA, and steel micro-fibers were studied. The results showed that increasing the resin content significantly improved the tensile strength, and different types of fibers had different effects on the performance of the concrete.
Epoxy resin, fly ash, and silica sand were used to produce polymer concrete reinforced with glass, carbon, polyvinyl alcohol (PVA), and high strength steel micro-fibers. The effects of two resin contents: 15% and 18%, and two curing regimes: ambient and heat were assessed. Their compressive strength, permeable porosity, and uniaxial tensile stress-strain behavior were studied. The compressive strength of 15% and 18% polymer concrete were 48-62 MPa and 61-74 MPa respectively. The porosity of all types of polymer concretes was less than 1%, except 15%-PVA and 15%-glass fiber reinforced polymer concrete. Under uniaxial tensile loading, glass and carbon fiber reinforced polymer concrete portrayed a sudden brittle failure resulting from complete fiber rupture, whereas PVA and steel fiber reinforced polymer concrete demonstrated a ductile strain-hardening response. A significantly higher tensile strength was observed when the resin content was increased from 15% to 18%, particularly for glass and carbon fiber reinforced polymer concrete, whereas for PVA and steel fiber reinforced polymer concrete this improvement was small. The brittle carbon fiber reinforced polymer concrete demonstrated the highest tensile strength, whereas the ductile steel fiber reinforced polymer concrete had the highest post-crack residual strength at large strains, irrespective of the resin content. Overall, heat curing had no impact on compressive or tensile properties of any type of polymer concrete investigated.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据