Compressive Strength Prediction of PVA Fiber-Reinforced Cementitious Composites Containing Nano-SiO2 Using BP Neural Network

Materials

Yi-Feng Ling¹  Ting-Yu Liu²  Juan Wang²  Peng Zhang² 

[1] National Concrete Pavement Technology Center, Institute for Transportation, Ames, IA 50010, USA;School of Water Conservancy Engineering, Zhengzhou University, Zhengzhou 450001, China;

关键词: bp neural network;    cementitious composite;    nano-sio₂;    pva fiber;    genetic algorithm;   

DOI  :  10.3390/ma13030521

来源: DOAJ

【 摘 要 】

In this study, a method to optimize the mixing proportion of polyvinyl alcohol (PVA) fiber-reinforced cementitious composites and improve its compressive strength based on the Levenberg-Marquardt backpropagation (BP) neural network algorithm and genetic algorithm is proposed by adopting a three-layer neural network (TLNN) as a model and the genetic algorithm as an optimization tool. A TLNN was established to implement the complicated nonlinear relationship between the input (factors affecting the compressive strength of cementitious composite) and output (compressive strength). An orthogonal experiment was conducted to optimize the parameters of the BP neural network. Subsequently, the optimal BP neural network model was obtained. The genetic algorithm was used to obtain the optimum mix proportion of the cementitious composite. The optimization results were predicted by the trained neural network and verified. Mathematical calculations indicated that the BP neural network can precisely and practically demonstrate the nonlinear relationship between the cementitious composite and its mixture proportion and predict the compressive strength. The optimal mixing proportion of the PVA fiber-reinforced cementitious composites containing nano-SiO₂ was obtained. The results indicate that the method used in this study can effectively predict and optimize the compressive strength of PVA fiber-reinforced cementitious composites containing nano-SiO₂.

【 授权许可】

Unknown