The Prediction of Stiffness of Bamboo-Reinforced Concrete Beams Using Experiment Data and Artificial Neural Networks (ANNs)

Muhtar Muhtar,Nursaid Nursaid,Rofi Budi Hamduwibawa,Taufan Abadi,Suhardi Suhardi,Ari Eko Wardoyo,Moh Dasuki,Syarif Hidayatullah,Fitriana Fitriana,Idris Mahmudi,Sofia Ariyani,Senki Desta Galuh,Ilanka Cahya Dewi,Agung Nilogiri,Miftahur Rahman,Irawati Irawati,Amri Gunasti

doi:10.3390/cryst10090757

Abstract

Stiffness is the main parameter of the beam’s resistance to deformation. Based on advanced research, the stiffness of bamboo-reinforced concrete beams (BRC) tends to be lower than the stiffness of steel-reinforced concrete beams (SRC). However, the advantage of bamboo-reinforced concrete beams has enough good ductility according to the fundamental properties of bamboo, which have high tensile strength and high elastic properties. This study aims to predict and validate the stiffness of bamboo-reinforced concrete beams from the experimental results data using artificial neural networks (ANNs). The number of beam test specimens were 25 pieces with a size of 75 mm × 150 mm × 1100 mm. The testing method uses the four-point method with simple support. The results of the analysis showed the similarity between the stiffness of the beam’s experimental results with the artificial neural network (ANN) analysis results. The similarity rate of the two analyses is around 99% and the percentage of errors is not more than 1%, both for bamboo-reinforced concrete beams (BRC) and steel-reinforced concrete beams (SRC).

Highlights

Some of the advantages of bamboo include having high tensile strength [1], easy to split, cut, elastic fibers, optimal in bearing loads, and it is not a pollutant
From this load vs. deflection pattern, the stiffness of bamboo-reinforced concrete beams can used to determine the modulus of elasticity or the stiffness of the Bamboo-reinforced concrete (BRC) beam
If viewed from the graph load vs. deflection relationship, Artificial neural networks (ANNs) analysis results pattern. From this load vs. deflection pattern, the stiffness of bamboo-reinforced concrete beams can with experimental results show the same stiffness value up to 80% ultimate load

Summary

Introduction

Some of the advantages of bamboo include having high tensile strength [1], easy to split, cut, elastic fibers, optimal in bearing loads, and it is not a pollutant. The weakness of bamboo as a construction material is attacked by insects, because the starch content in bamboo is quite high. Bamboo as a building material requires treatment, such as immersion in water [2,3] and the application of adhesives and waterproof layers [3]. The application of adhesive and waterproof coating has increased the load capacity and stiffness of the BRC beam [4]. Bamboo as a reinforcement of concrete structural elements has been widely used, among other things, as beam reinforcement [2,5,6,7], bridge frame reinforcement [8], plate or panel reinforcement [9,10,11], and column reinforcement [12,13].

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Discussion

Conclusion