Effect of notch position on fracture energy for foamed concrete

Global Congress on Construction, Material and Structural Engineering 2017

材料科学;土木建筑工程

Zamri, Mohd Naqiuddin^1 ; Rahman, Norashidah Abd^1 ; Jaini, Zainorizuan Mohd^1 ; Bahador, Nurul Shamila^1

Jamilus Research Centre, Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja

86400, Malaysia^1

关键词: Building construction;    Foamed concrete;    Load deflection;    Low density;    Malaysia;    Normal concretes;    Three-point bending test;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/271/1/012019/pdf
DOI  :  10.1088/1757-899X/271/1/012019

来源: IOP

【 摘 要 】

Foamed concrete is one of the lightweight concrete used to replace normal concrete. Foamed concrete has potential as a building construction material in Malaysia due to low density range. However, the behavior of fracture energy on foamed concrete still under investigation. Therefore, a study to determine the fracture energy of foamed concrete was conducted. In this study, foamed concrete fracture energy was obtained using the three-point bending test methods develop by RILEM and Hillerborg. A total of 12 beams with different types of notch and positions of notch were tested on the load-deflection condition. In addition, a total of 9 cube samples were cast to support the result of fracture energy by using model from Bazant and Becq-Giraudon and Comite Euro-International du Beton (CEB). Results showed the far the position of the notch from midpoint, the higher the value of fracture energy. In this study, the value of fracture energy ranges between 15 N/m and 40 N/m.