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

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 (2015) 粉煤灰掺量对简化权重成熟度法预测准确性的影响。 土木工程, 4, 119-126. doi: 10.12677/HJCE.2015.43015

参考文献

[1] 罗启灵, 邢锋, 韩宁旭, 张志兴, 李雪梅 (2010) 权重成熟度法的合理简化. 混凝土, 4, 34-36.

[2] 罗启灵, 邢锋, 韩宁旭, 王玉 (2010) 简化权重成熟度法预测混凝土早期强度. 混凝土, 5, 39-42.

分享
Top