统计分析影响混凝土 28 天抗压强度和凝结时间的有效因素。

Statistical analysis of the effective factors on the 28 days compressive strength and setting time of the concrete.

机构信息

Department of Chemical Engineering, Shahid Bahonar University of Kerman, Kerman 76175, Iran.

Kerman Momtazan Cement Company, 32nd Kerman-Rafsanjan Highway, Kerman, Iran.

出版信息

J Adv Res. 2015 Sep;6(5):699-709. doi: 10.1016/j.jare.2014.03.005. Epub 2014 Mar 24.

DOI:10.1016/j.jare.2014.03.005

PMID:26425360

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4563793/

Abstract

In this study, the effects of various factors (weight fraction of the SiO2, Al2O3, Fe2O3, Na2O, K2O, CaO, MgO, Cl, SO3, and the Blaine of the cement particles) on the concrete compressive strength and also initial setting time have been investigated. Compressive strength and setting time tests have been carried out based on DIN standards in this study. Interactions of these factors have been obtained by the use of analysis of variance and regression equations of these factors have been obtained to predict the concrete compressive strength and initial setting time. Also, simple and applicable formulas with less than 6% absolute mean error have been developed using the genetic algorithm to predict these parameters. Finally, the effect of each factor has been investigated when other factors are in their low or high level.

摘要

在这项研究中，研究了各种因素（SiO2、Al2O3、Fe2O3、Na2O、K2O、CaO、MgO、Cl、SO3 的重量分数以及水泥颗粒的比表面积 Blaine）对混凝土抗压强度和初凝时间的影响。本研究依据 DIN 标准进行了抗压强度和初凝时间测试。通过方差分析得到了这些因素的相互作用，得出了预测混凝土抗压强度和初凝时间的回归方程。此外，还利用遗传算法开发了简单适用的公式，其绝对平均误差小于 6%，可用于预测这些参数。最后，当其他因素处于低水平或高水平时，研究了每个因素的影响。