Assessing the effects of mechanical preventive measures on alkali-silica reaction expansion with accelerated mortar bar test
Journal of Testing and Evaluation, cilt.42, sa.6, 2014 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 42 Sayı: 6
- Basım Tarihi: 2014
- Doi Numarası: 10.1520/jte20130228
- Dergi Adı: Journal of Testing and Evaluation
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Ankara Yıldırım Beyazıt Üniversitesi Adresli: Hayır
Özet
Copyright © 2014 by ASTM International.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.