Analytical model for the compressive stress–strain behavior of PVA-FRC. (30th July 2019)

• Record Type: Journal Article
• Authors: Ayub, Tehmina; Khan, Sadaqat Ullah; Ayub, Ayesha
• Is Part Of: Construction & building materials. Volume 214(2019)
• Page Start: 581
• Page End: 593
• Publication Date: 2019-07-30
• Subjects: Compressive stress–strain models -- Silica fume -- Metakaolin -- PVA fibers -- Fiber reinforced concrete; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2019.04.126
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: Engineered cementitious composites (ECC) with PVA fibers is ductile but expensive. The use of PVA-ECC is limited due to cost and absence of coarse aggregates. PVA-FRC utilizes lesser cost and the use of large size aggregates in concrete. The compressive stress–strain models are not available for PVA-FRC. This paper suggests the compressive stress–strain models for PVA-FRC. Abstract: Polyvinyl alcohol (PVA) fiber is limitedly investigated in the concrete containing large size coarse aggregates. Correspondingly, there is limited literature available related to the modeling of its mechanical properties. This paper suggests a model for the prediction of stress–strain behavior of fiber reinforced concrete (FRC) containing maximum size of coarse aggregate of 19 mm and reinforced with 1–3% PVA fiber volume. The compressive strength of FRC ranged from 72 to 86 MPa due to the incorporation of 10% silica fume and metakaolin as partial cement replacement. The suggested analytical model is found to be proficient of producing complete stress–strain curves for FRC containing PVA fibers and closely represents the realistic stress–strain curves when compared with the experimental data. Besides this, the accuracy of existing analytical models is also discussed.