Ambient Cured Alkali Activated Flyash Masonry Units

International Conference on Advances in Materials and Manufacturing Applications 2016

Venugopal, K.^1 ; Radhakrishna^2 ; Sasalatti, Vinod M.^1

Dept of Civil Engg, Jain University, Bengaluru, India^1

Dept of Civil Engg, RV College of Engg, Affiliated to Visvesvaraya Technological University, Bengaluru, India^2

关键词: Alkali-activated fly ashes;    GGBFS;    Ground granulated blast-furnace slag (GGBFS);    Initial rate of absorptions;    Masonry units;    Sodium hydroxide solutions;    Strength;    Stress strain behaviours;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/149/1/012073/pdf
DOI  :  10.1088/1757-899X/149/1/012073

来源: IOP

【 摘 要 】

Geopolymers belong to a category of non-conventional and non-Portland cement based cementitious binders which are produced using industrial by products like fly ash and ground granulated blast furnace slag (GGBFS). This paper reports on the development of geopolymer mortars for production of masonry units. The geopolymer mortars were prepared by mixing various by products with manufactured sand and a liquid mixture of sodium silicate and sodium hydroxide solutions. After curing at ambient conditions, the masonry units were tested for strength properties such as water absorption, initial rate of absorption, compression, shear- bond, and stress-strain behaviour etc. It was observed that the flexural strength of the blocks is more than 2 MPa and shear bond strength is more than 0.4MPa. It was found that the properties of geopolymer blocks were superior to the traditional masonry units. Hence they can be recommended for structural masonry.