期刊
ENERGY AND BUILDINGS
卷 138, 期 -, 页码 539-545出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.enbuild.2016.12.079
关键词
Compressive strength; Curing time; Dry density; Flyash; Geopolymer mortar; Heat resistance
资金
- INSPIRE Fellowship, Department of Science and Technology, New Delhi
In order to make our environment green, a lightweight inorganic aluminosilicate polymer uses waste fly ash as source material instead of cement in concrete. Source material in combination with sodium-based alkaline liquid form a cement free material called geopolymer. This paper briefly presents the thermal performance of fly ash-based geopolymer mortar such as heat resistance behavior, thermal conductivity, compressive strength and dry density under different curing regime such as ambient temperature, heat chamber, hot air oven and autoclave. Here the silicate to hydroxide ratio was fixed as 2.5 and liquid to flyash ratio was taken as 0.4 throughout the process. From the results it was found that among all curing conditions, hot air oven curing shows best outcome. On further study it was found that specimen placed in hot air oven at 80 degrees C for 6 hours gives higher compressive strength of 27.20 MPa with the dry density of 1875 kg/m(3) and also thermal conductivity of 0.340W/mK than 24 hours curing for 1 day which make geopolymer as more energy efficient material. (C) 2016 Elsevier B.V. All rights reserved.
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