Strength and Density of Geopolymer Mortar Cured at Ambient Temperature for Use as Repair Material

International Conference on Innovative Research - ICIR Euroinvent 2016

Wazien, A.Z. Warid^1,2 ; Abdullah, Mohd Mustafa Al Bakri^1,2 ; Abd Razak, Rafiza^1,2 ; Rozainy, M.A.Z. Mohd Remy^3 ; Tahir, Muhammad Faheem Mohd^1

Center of Excellence Geopolymer and Green Technology (CEGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis (UniMAP), D/A Pejabat Pos Besar, Kangar, Perlis

01000, Malaysia^1

Faculty of Engineering Technology, Universiti Malaysia Perlis (UniMAP), D/A Pejabat Pos Besar, Kangar, Perlis

01000, Malaysia^2

School of Civil Engineering, Universiti Sains Malaysia (USM), Engineering Campus, Nibong Tebal, P. Pinang

14300, Malaysia^3

关键词: Alkaline activators;    Geopolymer mortars;    High potential;    NaOH concentration;    Patch repair;    Repair materials;    Source material;    Special properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/133/1/012042/pdf
DOI  :  10.1088/1757-899X/133/1/012042

来源: IOP

【 摘 要 】

Geopolymers produced by synthesizing aluminosilicate source materials with an alkaline activator solution promised an excellent properties akin to the existing construction material. This study focused on the effect of various binder to sand ratio on geopolymer mortar properties. Mix design of geopolymer mortar was produced using NaOH concentration of 12 molars, ratio of fly ash/alkaline activator and ratio Na2SiO3/NaOH of 2.0 and 2.5 respectively. Samples subsequently ware cured at ambient temperature. The properties of geopolymer mortar were analysed in term of compressive strength and density at different period which are on the 3rdand 7thday of curing. Experimental results revealed that the addition of sand slightly increase the compressive strength of geopolymer. The optimum compressive strength obtained was up to 31.39 MPa on the 7thday. The density of geopolymer mortar was in the range between 2.0 g/cm3to 2.23 g/cm3. Based on this findings, the special properties promoted by geopolymer mortar display high potential to be implemented in the field of concrete patch repair.