Title : SOME STUDIES ON GEOPOLYMER MASONRY BLOCKS USING TANK BED SOIL
Authors : Yogananda M.V,Jyothi T.K,R.V.Ranganath,K.S.Jagadish ,S.Raghunath and Manjunatha L.R
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Price : 250
Abstract : This paper presents the results of the studies on geopolymer blocks made using different combinations of tank bed soil and industrial by- products such as fly ash (FA), GGBS (Ground Granulated Blast furnace Slag) and brick powder (BP). The main focus of the study is to obtain the compressive strength and water absorption, which are the basic parameters to be studied when blocks are to be utilized as masonry units. The experimental program involves casting of geopolymer cubes using Sodium hydroxide and Sodium Silicate as alkaline activators. Two types of curing have been adopted viz., ambient curing (sundry) and heat curing at 600C. Thermal activation of soil and mechanical activation of brick bats are done with different combination of above said materials. The studies showed that polymerization is possible when soil is used in combination with GGBS and brick powder along with the alkalis. Compressive strength ranging from3.0 MPa to 12.0 MPa were obtained at 7 days curing. Curing at elevated temperature was found to be better as for as compressive strength is concerned. The studies revealed that polymerization of soil alone is not possible and hence a combination of GGBS and BP were needed.