The study about prediction model of concrete carbonation depth

Based on BP neutral network, forecast model about the concrete carbonation depth is constructed. The model was three-layer network structure pattern. The inputting-layer was the mix proportions of concrete. The outputting-layer was the concrete carbonation depth in 7d and 28d. The model´s transfer function was Sigmoid function and the input data was normalized.. At last, the experimental work for the concrete carbonation depth was designed and performed. The model was trained and tested by the experimental data, then the article thought the model provided the referenced for experimentation and manufacture. The article provided a method to saving energy sources and protecting circumstance.