Abrasion Resistance of Nano Silica Modified Roller Compacted Rubbercrete: Cantabro Loss Method and Response Surface Methodology Approach

4th International Conference on Civil and Environmental Engineering for Sustainability

地球科学;生态环境科学;经济学

Adamu, Musa^1,2 ; Mohammed, Bashar S^1 ; Shafiq, Nasir^1

Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, Perak

32610, Malaysia^1

Department of Civil Engineering, Bayero University, Kano, Nigeria^2

关键词: Box-Behnken design;    Degree of correlations;    Moving vehicles;    Partial replacement;    Pavement surface;    Percentage error;    Response surface methodology;    Roller-compacted concrete;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/140/1/012119/pdf
DOI  :  10.1088/1755-1315/140/1/012119

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Roller compacted concrete (RCC) when used for pavement is subjected to skidding/rubbing by wheels of moving vehicles, this causes pavement surface to wear out and abrade. Therefore, abrasion resistance is one of the most important properties of concern for RCC pavement. In this study, response surface methodology was used to design, evaluate and analyze the effect of partial replacement of fine aggregate with crumb rubber, and addition of nano silica on the abrasion resistance of roller compacted rubbercrete (RCR). RCR is the terminology used for RCC pavement where crumb rubber was used as partial replacement to fine aggregate. The Box-Behnken design method was used to develop the mixtures combinations using 10%, 20%, and 30% crumb rubber with 0%, 1%, and 2% nano silica. The Cantabro loss method was used to measure the abrasion resistance. The results showed that the abrasion resistance of RCR decreases with increase in crumb rubber content, and increases with increase in addition of nano silica. The analysis of variance shows that the model developed using response surface methodology (RSM) has a very good degree of correlation, and can be used to predict the abrasion resistance of RCR with a percentage error of 5.44%. The combination of 10.76% crumb rubber and 1.59% nano silica yielded the best combinations of RCR in terms of abrasion resistance of RCR.