Strength and Some Durability Properties of Concrete Containing Rice Husk Ash Produced in a Charcoal Incinerator at Low Specific Surface

Abalaka, AE

doi:10.1007/s40069-013-0058-8

Cited by 42 publications

(14 citation statements)

References 14 publications

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“…According to Abalaka [12] study, as the water to binder ratio increased, the quantity of maximum RHA replacement increased. According to Hussin and Parasuraman [16], there was a decrease in slump with increase percentage of RHA, with higher water demand for RHA due to higher surface area of RHA compared to cement.…”

Section: 1mentioning

confidence: 99%

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

Ngandu¹

2021

ITECKNE

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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.

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Section: 1mentioning

confidence: 99%

“…Future modeling for green concrete should be conducted focused to one or adjacent concrete class(es). [12] 39.11 0.00;0. 00; 0.00;0.…”

mentioning

confidence: 99%

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

Ngandu¹

2021

ITECKNE

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“…RHA contains around 85%-90% amorphous silica which is highly reactive in nature and can be produced by combustion of RH under controlled conditions, at relatively low temperature (500-600°C) and low rate of combustion (64). The change from amorphous to crystalline silica starts at 800°C and completes at 900°C (65). Fixing the temperature and the time of heat treatment while changing the amount of treated RH, RHA of different compositions can be obtained.…”

Section: Rice Husk Ashmentioning

confidence: 99%

“…One approach for the development of composites with improved durability is partial replacement of ordinary Portland cement by low carbon content RHA (66). By addition of RHA to Portland cement paste, the resistance to acid had a notable improvement (15,65,67). Saturated water absorption (WA) of RHA concrete diminished by addition of super plasticizer (Sulphonated Naphthalene) and the porosity decreased from 4.70% to 3.45% when the replacement level increased from 5% to 20% (15).…”

Section: Rice Husk Ashmentioning

confidence: 99%

Lightweight Composites Reinforced by Agricultural Byproducts

2014

ACS Symposium Series

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“…Generally, the RHA contains around 85 % − 95 % amorphous silica and exhibits an eco-friendly behaviour as a supplementary cementing material in concrete [34][35][36] and can be used at around 10 − 25 %wt to replace cement in concrete without decreasing the strength [2]. Moreover, the RHA exhibits a good performance even without any further processing and helps to accelerate the early age strength development in concrete [7,37]. The shrinkage and absorption capacities of an ordinary and RHA-based concrete are nearly the same.…”

Section: Introductionmentioning

confidence: 99%

Performance of Sustainable Green Concrete Incorporated With Fly Ash, Rice Husk Ash, and Stone Dust

et al. 2021

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The performance of a sustainable green concrete with fly ash (FA), rice husk ash (RHA), and stone dust (SD) as a partial replacement of cement and sand was experimentally explored. FA and RHA have a high silica content, are highly pozzolanic in nature and have a high surface area without any treatment. These by-products show filler effects, which enhance concrete’s density. Results showed that the FA and RHA materials have good hydration behaviour and effectively develop strength at an early age of concrete. SD acts as a stress transferring medium within concrete, thereby allowing the concrete to be stronger in compression, and bending. Consequently, water absorption capacity of the sustainable concrete was lower than that of the ordinary one. However, a little reduction in strength was observed after the replacement of the binder and aggregate using the FA, RHA and SD, but the reduction was insignificant. The reinforced structure with sustainable concrete containing the FA, RHA, and SD generally fails in concrete crushing tests initiated by flexural cracking followed by shear cracks. The sustainable concrete could be categorized as a perfect material with no significant conciliation in strength properties and can be applied to design under-reinforced elements for a low-to-moderate service load.

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Strength and Some Durability Properties of Concrete Containing Rice Husk Ash Produced in a Charcoal Incinerator at Low Specific Surface

Cited by 42 publications

References 14 publications

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

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

Lightweight Composites Reinforced by Agricultural Byproducts

Performance of Sustainable Green Concrete Incorporated With Fly Ash, Rice Husk Ash, and Stone Dust

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