Prediction of Compressive Strengths for Rice Husks Ash incorporated concrete, Using Neural Network and Reviews

Abstract

Modelling of concrete that incorporates agricultural wastes such as rice husk ash (RHA) could potentially enhance utilization of green concrete and application of sustainable construction materials. This paper evaluations compressive strength prediction for rice husk ash (RHA) cementitious material incorporated concrete using artificial neural networks (ANNs) one of the various prediction methods. The research is based on various previous experimental studies.Literature reviews of 72 datasets for RHA incorporated concrete from 15 previous researches, were used and subjected to ANNs models, having learning rate of 0.06 with tanh activation functions. Four(4) input variables were considered, namely:- superplasticizer or water reducers variation from control (%), water to binder ratio, percentage of RHA and control compressive strengths. Output variable was compressive strength of RHA cementitious material incorporated concrete. The ANN with 15 neurons in the hidden layer was selected and indicated overall values of 5.10MPa, 0.99, 3.81MPa and 9.73% for the root mean square error (RMSE), absolute factor of variance (R2), mean absolute error (MAE) and mean absolute percentage error (MAPE) respectively and for individual training, validation/checking and testing datasets, the RMSE, R2, MAE and MAPE ranging between 3.98MPa-6.56MPa, 0.98-0.99, 3.44MPa-4.94MPa and 9.19%-12.41% respectively. Generally, both predicted and original dataset, indicated higher and lower strength values for 5-10% and 15-30% RHA incorporated cementitious material concrete respectively compared to the control strengths.Considering that the study utilized data from different sources and with a wide range of concrete strengths the selected ANN showed relatively good performance. The study provides an indicator that machine learning techniques could accurately predict green concrete strength. Based on model performance the percentage RHA cementitious materials in concrete and the other 3 input variable had a significant impact on concrete strengths. Future research should be conducted to predict green concrete focused on particular concrete class.

Prediction of Compressive Strengths of Concrete with Partial Fine Aggregate of Plastic Using Artificial Neural Network and Revisions

“…Chandwani et al [26] used six different statistical performance for evaluation that included mean absolute error (MAE) and mean absolute percentage error (MAPE) as shown in equations ( 5) and (6). Ngandu [10]…”

“…The concept of plastic waste mixing in concrete could be a very environmentally-friendly method of solid waste disposal in landfills as indicated by Dharmaraj and Iyappan [9]. Waste utilization from rice processing/production for construction could provide alternative sustainable materials, while reducing the burden of solid waste according to Ngandu [10], the same goes for reused/recycled plastic waste for construction.…”

Influencia de las cenizas de cascarilla de arroz como reemplazo parcial del cemento utilizado para la elaboración del concreto: una revisión de literatura

“…Las empresas cementeras tienen el reto de encontrar e incorporar diversas materias con características puzolánicas en la elaboración de nuevos productos, la cual es una tendencia que cada vez gana más fuerza con el transcurrir del tiempo, ya que se obtienen productos muy similares a los provenientes de materias primas comercializadas. Por esta razón, se necesita desarrollar el uso de cementos tipo Pórtland alternativos, utilizados comúnmente en procesos constructivos, para así poder cubrir las nuevas necesidades, de manera que cumplan con los parámetros básicos de calidad y que los beneficios de su utilización en concretos estructurales y no estructurales sean las esperadas; y que de paso contribuyen con la mitigación de emisiones de gas durante su producción, puesto que se sabe que la industria del cemento contribuye negativamente a la polución del aire, causante del efecto invernadero y del posterior aumento del calentamiento global [1], [2]. Ante lo expuesto anteriormente, un nuevo uso de las cenizas de cascarillas de arroz (CCA) se encuentra en la industria cementera, ya que se manifiesta interesante su participación como agente puzolánico en el cemento tipo Portland para la preparación del concreto estructural y no estructural, debido a su contenido elevado de sílice en su composición [3], y que se puede extender dicho uso incluso como reemplazo parcial del cemento en la elaboración del concreto.…”