Comparative studies on strength properties of flyash based geopolymer concrete incorporating ggbs and alccofine subjected to elevated temperature

Abstract

Geopolymer concrete is a novel material trying to be implemented in the construction field. Efforts being made by the researchers to unfurl the advantages and application of Geopolymer concrete in engineering fields. Geopolymer concrete does not require cement in making and utilizes industrial waste products. Hence replacing the OPC concrete by GPC, we not only reduce the pollution caused by manufacturing cement, but also use calcium, silica and alumina rich industrial waste. It is important to study the performance of GPC subjected to elevated temperature before considering it for structures like industrial buildings, complexes which are vulnerable to fire accidents. Present study investigates the properties like compressive strength, weight loss/gain, and Thermal energy absorption for GPC subjected to elevated temperature from 1000C, 2000C, 4000C, 6000C and 8000C for exposure time of 1hour and 2hours. We compare these properties of GPCs, one made using Flyash and GGBS as binders named FGGPC and the other using Flyash and Alccofine 1203 named FAGPC. From the results we found that strength of GPC increases with the rise in temperature up to 2000C and then rapidly decreases with further rise in temperature. Use of FAGPC is advantageous than using FGGPC on field vulnerable to fire.

Strength and durability study on alccofine based geo-polymer concrete

“…Alccofine is a highly cementitious material, very finer as contrasted with normal cement particle size, and used as a partial replacement for cement, it can be used in the preparation of special types of concretes such are self-compacting concrete Kusuma Mounika et al [8] as it can enhances the workability of the concrete as well, can be employed to develop high strength concrete Bharat et al [9], and in GPC, it can be used in GPC mix as a strength enhancer mentioned by Prince Goyal et al [10] and its combination with other cementitious materials can lead concrete to attain the high early strength characteristics by the study was conducted by Boobalan et al [11], and the finer content of cementitious materials reduces the voids present in the concrete mixes that were significantly reduced by the CSH gel formed mentioned by the microscopic study given by Sagar and Shiva [12], hence the concrete becomes denser with an excellent interlocking structure G. Balaji et al [13] and it can withstand elevated temperatures given by based on the study conducted by Chandrakanth et al [14].…”