Journal Published Online: 03 June 2014
Volume 42, Issue 6

Assessing the Effects of Mechanical Preventive Measures on Alkali-Silica Reaction Expansion with Accelerated Mortar Bar Test

CODEN: JTEVAB

Abstract

This paper presents a modification to the apparatus of the mortar bar test of ASTM C490 in order to assess and compare the influence of mechanical preventive measures in reducing alkali-silica reaction (ASR) expansion in concrete with respect to the traditional measures. For this purpose, reinforced mortar specimens with or without pre-stressing force applied were examined and the effects of the reinforcement ratio and pre-stressing force on ASR-induced expansion and cracking were studied through the accelerated mortar bar test method of ASTM C1260. The mechanical preventive measure was also compared with a traditional preventive measure by using fly ash. The results show that reinforcement and pre-stressing force play a role in limiting expansion and cracking due to ASR and that the developed test apparatus in this study can be used for measurements.

Author Information

Musaoglu, Orhan
Materials of Construction Laboratory, Dept. of Civil Engineering, Middle East Technical Univ., Ankara, TR
Turanli, Lutfullah
Materials of Construction Laboratory, Dept. of Civil Engineering, Middle East Technical Univ., Ankara, TR
Saritas, Afsin
Structural Mechanics Laboratory, Dept. of Civil Engineering, Middle East Technical Univ., Ankara, TR
Pages: 11
Price: $25.00
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Details
Stock #: JTE20130228
ISSN: 0090-3973
DOI: 10.1520/JTE20130228