土木工程  >> Vol. 4 No. 3 (May 2015)

粉煤灰掺量对简化权重成熟度法预测准确性的影响
The Amount of Fly Ash Influence to Prediction Accuracy Using the Simplified Weighted Maturity Method

DOI: 10.12677/HJCE.2015.43015, PDF, HTML, XML, 下载: 1,819  浏览: 3,798  科研立项经费支持

作者: 罗启灵, 王卫仑, 龙武剑:深圳大学土木工程学院,广东省滨海土木工程耐久性重点实验室,深圳市土木工程耐久性重点实验室,广东 深圳

关键词: 简化权重成熟度法早期抗压强度预测粉煤灰The Simplified Weighted Maturity Method Early Compression Strength Prediction Fly Ash

摘要: 本文结合东部过境高速公路连接线工程,应用简化权重成熟度预测粉煤灰混凝土早期抗压强度,研究表明,(预测值/实测值)均值1.00,变异系数6.5%,预测准确性高;在水胶比0.45和胶凝材料400 kg/m3固定的情况下,不同粉煤灰掺量的强度预测公式的斜率相同、截距不同,粉煤灰掺量每增加10%,截距减少5 MPa。
Abstract: In this paper, the early compressive strength of fly ash concrete is predicted in the Shenzhen east-ern transit expressway connecting line project, using the Simplified Weighted Maturity Method. The result of the study shows that: the mean value (predicted value/measured strength) is 1.00; the C.V is 6.5% and the prediction accuracy is high. Under the condition of W/B 0.45 and cementitious material 400 kg/m3, the slope of the strength prediction formula for different fly ash concrete is same and the intercept is different. When fly ash content increases 10%, the intercept reduces 5 MPa.

文章引用: 罗启灵, 王卫仑, 龙武剑. 粉煤灰掺量对简化权重成熟度法预测准确性的影响[J]. 土木工程, 2015, 4(3): 119-126. http://dx.doi.org/10.12677/HJCE.2015.43015