Biopolymers to improve physical properties and leaching characteristics of mortar and concrete: A review

2nd International Conference on Oleo and Petrochemical Engineering

Olivia, M.^1 ; Jingga, H.^1 ; Toni, N.^1 ; Wibisono, G.^1

Department of Civil Engineering, Faculty of Engineering, Universitas Riau, Pekanbaru

28293, Indonesia^1

关键词: Cellulose ether;    Green materials;    Leaching characteristics;    Mortar properties;    Physical and mechanical properties;    Properties of concretes;    Sustainable construction;    Water retention;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/345/1/012028/pdf
DOI  :  10.1088/1757-899X/345/1/012028

来源: IOP

【 摘 要 】

The invention of environmentally friendly, high performance, and green material such as biopolymers marked an emerging trend for sustainable construction over the past decades. Biopolymer comprises of natural monomers and synthesized by plants or other organisms. The sustainable, biodegradable, and renewable biopolymers were used in concrete mixes to improve their physical and mechanical properties and durability. The aim of this paper is to provide a brief an overview of the impact of biopolymer addition into concrete and mortar mixes. Many studies on the influence of biopolymer on the properties of concrete and mortar by adding biopolymers at a certain proportion (usually less than one wt.%) to the concrete or mortar mixes, and the heavy metal leaching, rheological, and mechanical properties of the mixes were conducted. Biopolymers included in this review are chitosan (CH), xanthan gum (XG), guar gum (GG), lignosulphonate (LS), and cellulose ethers (CE). Data from previous studies showed that the addition of certain types of biopolymer into concrete and mortar mixes improve workability, water retention, and compressive strength by up to 30 percent. Chitosan strengthens heavy metal encapsulation in the mortar and neutralizes the negative impact of heavy metal on the mortar properties and environment. To sum up, the use of biopolymers improve physical properties and leaching characteristics of mortar and concrete.