The effect of alkali-silica reaction on steel fiber-matrix bond characteristics of cement based mortars


Beglarigale A., YAZICI H.

CONSTRUCTION AND BUILDING MATERIALS, vol.47, pp.845-860, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 47
  • Publication Date: 2013
  • Doi Number: 10.1016/j.conbuildmat.2013.05.045
  • Journal Name: CONSTRUCTION AND BUILDING MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.845-860
  • Keywords: Alkali-silica reaction, Pull-out, Expansion, Steel fiber, Strength, PULL-OUT TEST, REINFORCED COMPOSITES, MECHANICAL-PROPERTIES, AGGREGATE REACTION, EXPANSION, CONCRETE, BEHAVIOR, FRACTURE, MICROFIBERS, PERFORMANCE
  • Dokuz Eylül University Affiliated: Yes

Abstract

The effect of ASR on fiber-matrix bond behavior has been investigated in this research. The potentially reactive basaltic aggregate was chosen as a reactive material. Two series of specimens containing different amounts of supplementary cementing materials (SCMs) were prepared. One of them was cured in 1 M NaOH solution at 80 degrees C, other series were cured in 80 degrees C water up to 150 days to obtain similar maturity. ASR expansion, single fiber pull-out load, debonding toughness, flexural and compressive strength was determined. Test results indicate that the ASR gel congestion in fiber-matrix interface increased the bond strength significantly during alkali exposure. Furthermore, SCMs are effective to reduce ASR expansion and to prevent the mechanical properties loss due to ASR. Micro-structural investigations revealed the reaction products having different morphology (fibrous, rosette type, network appearance, etc.) in alkali exposed specimens. (C) 2013 Elsevier Ltd. All rights reserved.