摘要
为提高粉煤灰和陶粒的利用率,达到节约资源、保护环境的目的,本文通过控制粉煤灰和陶粒的掺量,以密度、坍落度、混凝土抗压强度等参数作对比设计正交试验,对粉煤灰-陶粒双掺混凝土的力学性能进行研究。通过对试验结果进行极差分析,找出影响双掺混凝土的主次因素,作为BP神经网络的输入,预测混凝土的抗压强度,与实际值进行对比分析。结果表明:当粉煤灰掺量为12%,陶粒掺量在36%时,混凝土力学性能最佳,满足泵送要求;实测值和预测值的误差不超过2%,有很高的预测精度。上述结论可作为开发利用粉煤灰-陶粒混凝土的依据。
In order to improve the utilization rate of fly ash and ceramsite,and to save resources and protect environment,in this paper,by controlling the content of fly ash and ceramsite,the orthogonal experiment is designed to compare the density,slump,concrete compressive strength and other parameters,so as to study the mechanical properties of fly ash-ceramsitecodoped concrete.Through the range analysis of the experimental results,the primary and secondary factors affecting the codoped concrete are found out as the input of BP neural network,then the compressive strength of concrete is predicted and compared with the actual value.The results show that when the fly ash content is 12% and the ceramsite content is 36%,the mechanical properties of concrete are the best and meet the pumping requirements.The error between the measured value and the predicted value is less than 2%,so the prediction accuracy is very high.The above conclusions can be used as the basis for the development and utilization of fly ash-ceramsite concrete.
作者
杨得源
何晓升
武佳瑞
YANG Deyuan;HE Xiaosheng;WU Jiarui(Shanxi Datong University,a.Coal Engineering School,Datong 037009,Shanxi,China;Shanxi Datong University,Architecture and surveying Engineering School,Datong 037009,Shanxi,China)
出处
《工程建设》
2023年第2期8-14,共7页
Engineering Construction
基金
山西大同大学研究生教育创新项目(21CX33)。
关键词
粉煤灰
陶粒混凝土
泵送混凝土
坍落度
抗压强度
正交试验
flyash
ceramsite concrete
pumpcrete
slumps
compressive strength
orthogonal experimental design
