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论文类型：期刊论文

发表时间：2015-12-30

发表刊物：CONSTRUCTION AND BUILDING MATERIALS

收录刊物：SCIE、EI、Scopus

卷号：101

页面范围：667-674

ISSN号：0950-0618

关键字：FRP; Expansive concrete; Shrinkage; Creep; Prestress loss

摘要：Hybrid fiber-reinforced polymer (FRP) reinforced expansive concrete (EC) structural system shows a good potential for delaying concrete cracking and eliminating steel corrosion. In this study, long-term expansion-shrinkage strain development and prestress loss of the proposed system are investigated. Test results were evaluated based on maximum expansion strain, concrete strength and strain loss. An analytical model consisting of shrinkage, creep of expansive concrete as well as relaxation of steel was developed from GL2000. The comparison of the strain loss between tested results and calculation was presented. Results show that lime-system EC presents a higher prestress strain and lower prestress loss than ettringite-system EC in the long term. Calculated results from the developed model and experimental data show a good agreement. (C) 2015 Elsevier Ltd. All rights reserved.