Innovative and sustainable green concrete_A potential review on utilization of agricultural waste

Postgraduate Symposium in Civil and Environmental Engineering 2019

生态环境科学;土木建筑工程

Mohamad, Noridah^1 ; Tahir Lakhiar, Muhammad^1 ; Aziz Abdul Samad, Abdul^1 ; Othuman Mydin, Md Azree^2 ; Ahmed Jhatial, Ashfaque^1 ; Anis Sofia, S.^3 ; Inn Goh, Wan^1 ; Ali, Noorwirdawati^1

Department of Structural and Material Engineering, Facility of Civil and Environmenatal Engineering, UTHM, Johor

84600, Malaysia^1

School of Housing, Building and Planning, Universiti Sains Malaysia, Penang

11800, Malaysia^2

School of Materials, Universiti Malaysia Perlis, Malaysia^3

关键词: Cement replacement;    Global warming and climate changes;    Green concrete;    Pozzolanic materials;    Pozzolanic reaction;    Strength of concrete;    Sustainable concretes;    Versatile products;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/601/1/012026/pdf
DOI  :  10.1088/1757-899X/601/1/012026

来源: IOP

【 摘 要 】

Concrete is the most versatile product used as building material in world's construction industry, and it generates carbon to the atmosphere. In manufacturing of cement, 8% to 10% of global carbon dioxide (CO2) gas is generated. The maximum utilization of cement contributes to global warming and climate change. Therefore, many scholars have conducted a research to develop green and sustainable concrete incorporating different waste materials. By utilizing waste materials as cement replacement, the CO2 gas emissions will decrease. This paper reviews the potential and innovative utilization of agricultural waste as partially cement replacing material to make green concrete. Agricultural waste possesses the pozzolanic materials, when finely grinded, generate pozzolanic reaction, in which silica responds with calcium oxide to create calcium silicates which is responsible for higher strength attained in the concrete. It is concluded from previous studies the agricultural waste which consist the high silica contain generated the pozzolanic reaction in concrete mix which contributes the enhancement in strength. The RHA, SCBA POFA are the pozzolanic material, 10%-20% utilization of these waste is optimum and enhance the 20%-30% strength of concrete. The Banana Skin Powder (BSP) also possesses the high silica contain which will generate the pozzolanic reaction in concrete mix and will improve the strength of concrete such as the other agricultural waste improves.