摘要
本试验以C30为设计强度,选定粉煤灰掺量为30%,取水胶比为0.36、0.4和0.5,考核指标为7 d、28 d和90 d混凝土试件的抗压和抗拉强度。研究表明,随着龄期的增长,试件抗压强度和劈拉强度基本上逐渐增大;随着水胶比减小,混凝土试件抗压和劈拉强度随之增加。经本次试验数据分析,粉煤灰掺量为30%的最优水胶比为0.4。
This test uses C30 as the designed strength, coal ash： 30%, water and glue ratio： 0. 36, 0. 4 and 0. 5. Testing items are the compression strength and tensile strength of 7d, 28d and 90d concrete specimen. According to the research result, the compression strength and tensile grow when the specimen ages. Also, the compression strength and tensile grow when the water and glue ratio lows down. Based on the test data, the best water and glue ratio for 30% coal ash is o. 4.
出处
《水利科技与经济》
2013年第4期91-94,共4页
Water Conservancy Science and Technology and Economy
关键词
混凝土强度
水胶比
粉煤灰掺量
concrete strength
water and glue ratio
coal ash percentage
