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


Musaoglu O., TURANLI L. , SARITAŞ A.

JOURNAL OF TESTING AND EVALUATION, cilt.42, ss.1520-1529, 2014 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 42 Konu: 6
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1520/jte20130228
  • Dergi Adı: JOURNAL OF TESTING AND EVALUATION
  • Sayfa Sayıları: ss.1520-1529

Özet

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.