Evaluation of cementing efficiency of fly ash on strength development based on material composition

2014 Fiscal Year Final Research Report

• Project/Area Number: 25820191
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Civil engineering materials/Construction/Construction management
• Research Institution: Hiroshima University
• Principal Investigator: OGAWA Yuko 広島大学, 工学(系)研究科(研究院), 助教 (30624564)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: フライアッシュ / コンクリート / 圧縮強度 / セメント有効係数

Outline of Final Research Achievements

The present study shows that an equivalent factor (k-value) of fly ash, which indicates the contribution of fly ash as cementitious material to the strength development of mortar or concrete, can vary with the replacement ratio of fly ash. The k-vale was investigated by composition of cementitious material in order to design a mix proportion of fly ash concrete by evaluating water to cement ratio with k-value. As a result, the k-value can be evaluated by the amount ratio of SiO2 in fly ash to C3S and C2S in cement. In addition, the performance of fly ash can be improved by curing internally.

Free Research Field

土木工学