用响应面法评价纤维增强钢筋混凝土的性能

Q3 Engineering

Open Civil Engineering Journal Pub Date : 2023-04-01 DOI:10.28991/cej-2023-09-04-014

T. Awolusi, Alenoghena I. Ekhasomhi, O. Aluko, Olanike O. Akinkurolere, M. Azab, A. Deifalla

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引用次数: 1

摘要

纤维增强钢筋混凝土是一种新一代的混凝土，已被发现具有足够的性能。混凝土生产造成的全球二氧化碳排放已经破坏了地球大气层。这些排放物，连同建筑垃圾，如陶瓷粉和铝废料，被认为是对环境最有害的废物之一，最终导致污染。在本研究中，纤维增强铁混凝土(FRFC)含有废铝纤维、水泥、陶瓷废粉、波纹钢丝网、细骨料和粗骨料。将混凝土配合比中的水泥部分添加0、10%、20%的陶瓷粉(CP)，铝纤维(AF)按0、1、2%的比例添加。采用响应面法(RSM)的中心复合设计，对陶瓷粉和铝纤维的变化进行了研究，以建立旨在改善纤维增强钢筋混凝土力学性能的实验设计点。结果表明，与传统混凝土相比，在混凝土中加入20%的陶瓷粉和1%的铝纤维，FRFC的机械性能略有改善。抗压、抗弯、劈裂抗拉强度均较常规混凝土有较大提高，其中对照混凝土强度分别为13.060、5.720、3.110 N/mm2，钢筋混凝土强度分别为15.88、6.68、3.83 N/mm2。显微结构图像进一步证实了这一点。RSM模型，参数为;等高线图，方差分析和优化，用于有效地预测和优化基于自变量(铝纤维和陶瓷粉)考虑的钢筋混凝土的响应。随着决定系数(R2)趋于1，预测数据的结果呈直线线性增长，表明RSM模型适用于预测各变量对FRFC的响应。Doi: 10.28991/CEJ-2023-09-04-014全文:PDF

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Performance Evaluation of Fiber-reinforced Ferroconcrete using Response Surface Methodology

Fibre-reinforced ferroconcrete is a new-generation type of concrete that has been found to have adequate performance. Global emissions of CO2 as a result of concrete production have damaged the earth's atmosphere. These emissions, together with construction waste, such as ceramic powder and aluminium waste, are considered one of the most harmful wastes to the environment, eventually leading to pollution. In this study, the fibre-reinforced ferroconcrete (FRFC) contained waste aluminium fibre, cement, ceramic waste powder, corrugated wire mesh, and fine and coarse aggregate. The cement content in the concrete mix was partially replaced with Ceramic Powder (CP) in proportions of 0%, 10%, and 20%, while the Aluminum Fibers (AF) were added in proportions 0, 1, and 2% to the concrete mix. The variation of ceramic powder and aluminium fibres was done using the central composite design of Response Surface Methodology (RSM) to create experimental design points meant to improve the fibre-reinforced ferroconcrete's mechanical performance. The results conclude that the mechanical performance of the FRFC was slightly improved more than conventional concrete, where at 20% replacement of ceramic powder and 1% addition of aluminium fibre to the concrete mix. There was more compressive, flexural, and split tensile strength increase than conventional concrete, with control concrete having strengths of 13.060, 5.720, and 3.110 N/mm2 and ferroconcrete 15.88, 6.68, and 3.83 N/mm2 respectively. This was further confirmed with microstructural images. The RSM model, with parameters such as; contour plots, analysis of variance, and optimisation, was used to effectively predict and optimise the responses of the ferroconcrete based on the independent variables (Aluminum fibre and Ceramic Powder) considered. The results of the predicted data show a straight-line linear progression as the coefficient of determination (R2) tends to 1, indicating that the RSM model is suitable for predicting the response of the variables on the FRFC. Doi: 10.28991/CEJ-2023-09-04-014 Full Text: PDF

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来源期刊

Open Civil Engineering Journal Engineering-Civil and Structural Engineering

CiteScore

1.90

自引率

0.00%

发文量

期刊介绍： The Open Civil Engineering Journal is an Open Access online journal which publishes research, reviews/mini-reviews, letter articles and guest edited single topic issues in all areas of civil engineering. The Open Civil Engineering Journal, a peer-reviewed journal, is an important and reliable source of current information on developments in civil engineering. The topics covered in the journal include (but not limited to) concrete structures, construction materials, structural mechanics, soil mechanics, foundation engineering, offshore geotechnics, water resources, hydraulics, horology, coastal engineering, river engineering, ocean modeling, fluid-solid-structure interactions, offshore engineering, marine structures, constructional management and other civil engineering relevant areas.