Proportioning of Geopolymer Mortar and Properties of Geopolymer Masonry Blocks

Author(s):

B S Girish , R V COLLEGE OF ARCHITECTURE

Keywords:

Geopolymers, Strength, IRA, Tangent Modulus

Abstract:

The main objective of this research was to proportion the geopolymer mortar and to study the properties of geopolymer blocks. The materials used are flyash, Ground Granulated Blast Furnace Slag (GGBS), silicafume and metakaoline as binders, sand and rock dust as fine aggregate. Sodium hydroxide and sodium silicate were used for the preparation of alkaline solution. The proportioning of mortar indicates that the maximum strength developed for the combination of flyash and GGBS was 9.41MPa at the age of 7 days. The strength produced in other combinations are in the range of 0.32 - 5.95 MPa. The strength development was increasing at a faster rate till the age of 28days and it was almost constant later. The dry compressive strength of masonry units was in the range of 11.5- 28.03 MPa, IRA was in the range of 3.42- 9.7kg/m2/min, water absorption was in the range of 6.56- 12.12%, wet strength was in the range of 7.71- 19.64 MPa, initial tangent modulus was in the range of 10207-15338 MPa, initial secant modulus was in the range of 9267-14176 MPa. The properties of the geopolymer blocks indicate that they can be used as masonry units in structural masonry.

Other Details:

Manuscript Id	:	IJSTEV5I9004
Published in	:	Volume : 5, Issue : 9
Publication Date	:	01/04/2019
Page(s)	:	1-7

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