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Effects of polymer-cement ratio and accelerated curing on flexural behavior of hardener-free epoxy-modified mortar panels

Rafique Bhutta, Muhammad Aamer (2010) Effects of polymer-cement ratio and accelerated curing on flexural behavior of hardener-free epoxy-modified mortar panels. MATERIALS AND STRUCTURES, 43 (3). 429 -439. ISSN 1359-5997

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Official URL: http://dx.doi.org/10.1617/s11527-009-9578-8

Abstract

This experimental study reports the applicability of hardener-free epoxy-modified mortar panels to permanent forms as precast concrete products. Hardener-free epoxy-modified mortars are mixed using a Bisphenoal A-type epoxy resin without any hardener with various polymer–cement ratios and steel fiber reinforcement, and subjected to different curings. Hardener-free epoxy-modified mortar panels are prepared with same polymer–cement ratios and steel fiber reinforcement on trial, and tested for flexural behavior under four-point (third-point) loading. The effects of polymer–cement ratios and curings on strength properties of hardener-free epoxy-modified mortars, and on the flexural strength, flexural stress-extreme tension fiber strain relation, flexural load–deflection relation of hardener-free epoxy-modified mortar panels were examined. The adhesion in tension (to placed concrete) of the hardener-free epoxy-modified mortar panels was also tested. As a result, the hardener-free epoxy-modified mortar panels develop a high flexural strength, large extensibility and good adhesion to the placed concrete. The epoxy-modified mortar panels are more ductile and have high load-bearing capacity than unmodified mortar panels and can be used as precast concrete permanent forms in practical applications.

Item Type:Article
Uncontrolled Keywords:epoxy resin, hardener-free epoxy modified mortar, permanent form, polymer–cement ratio, flexural behavior, adhesion
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Civil Engineering
ID Code:26140
Deposited By: Liza Porijo
Deposited On:27 Jun 2012 08:30
Last Modified:24 Aug 2014 08:05

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