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Date of Award
Thesis - Pacific Access Restricted
Master of Science (M.S.)
First Committee Member
Second Committee Member
In this experiment, mortar bars were prepared with three kinds of industrial solid waste and two kind of aggregates. Positive correlation between expansion induced by ASR and C/S ratio was obtained from the experiment result. Expansion of specimens prepared with standard sand and three cementitious materials increased with curing going on, and had expansion at the 14th day less than 0.1%. Expansion of mortar bars prepared with standard sand and cement increased in a linear way and the expansion at the 14th day was 0.195%. Expansion induced by ASR doesn't exhibit a positive correlation with C/S ratio. Expansion of mortar bars prepared with coarse sand and three cementitious materials at the 14th day had a broad range from 0.087% to 0.161%. In each group, expansion increases with curing going on and in latter ages expansion values of different set tend to spread out. Specimens with the C/S ratio smaller than 1 showed innocuous expansion behavior. Specimens with higher C/S ratios got higher expansion at the 14th day. Clear positive correlation between expansion and C/S was observed in each group. Expansion of mortar bars prepared with coarse sand and cement increased in a linear way and reached 0.5% at the 14th day as a deleterious expansion. Clear positive correlation between expansion and C/S ratio were observed from the experiment result. To characterize the positive correlation between expansion induces by ASR and C/S ratio, an approximate classification could be carried out as follows: C/S less than 1(1.034 from regression formula) as innocuous expansion range, C/S from 1to 2.6 (2.576 from regression formula) as both innocuous and deleterious range, and C/S bigger than 2.6 as deleterious range.
Zhang, Yuntao. (2014). Effect of calcium-silicon ratio on the expansion of mortar bars due to alkali-silica reaction. University of the Pacific, Thesis - Pacific Access Restricted. http://scholarlycommons.pacific.edu/uop_etds/222
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