TY - GEN
T1 - Geopolymer concrete at ambient and elevated temperatures : recent developments and challenges
AU - Tao, Zhong
AU - Pan, Zhu
PY - 2019
Y1 - 2019
N2 - ![CDATA[Geopolymer concrete (GPC) is attracting increasing attention due to its potential to replace ordinary Portland cement (OPC) concrete to reduce the carbon dioxide emissions from cement production. Although extensive research has been conducted in this area since the 1970s, its applications in engineering practice are still very limited. This paper briefly reviews the recent developments of GPC and its properties at ambient and elevated temperatures. It was found that GPC generally exhibits comparative properties to OPC concrete at ambient temperature. In contrast, GPC often has better fire performance and superior durability. Therefore, GPC could be advantageously used to improve the fire performance and durability of buildings and infrastructure. While a lot of aluminosilicate raw materials (such as fly ash) are low cost, the prohibitive costs of laboratory grade activators (such as sodium hydroxide and sodium silicate) greatly limit the widespread application of GPC. Therefore, there is a need to develop low-cost geopolymer concrete. Meanwhile, a few other challenges should also be overcome, such as difficulties to achieve consistent properties and to control efflorescence of GPC. Further research is required at both material and structural levels to address these issues. Particularly, there is a need to develop relevant building codes to promote the use of GPC in practice.]]
AB - ![CDATA[Geopolymer concrete (GPC) is attracting increasing attention due to its potential to replace ordinary Portland cement (OPC) concrete to reduce the carbon dioxide emissions from cement production. Although extensive research has been conducted in this area since the 1970s, its applications in engineering practice are still very limited. This paper briefly reviews the recent developments of GPC and its properties at ambient and elevated temperatures. It was found that GPC generally exhibits comparative properties to OPC concrete at ambient temperature. In contrast, GPC often has better fire performance and superior durability. Therefore, GPC could be advantageously used to improve the fire performance and durability of buildings and infrastructure. While a lot of aluminosilicate raw materials (such as fly ash) are low cost, the prohibitive costs of laboratory grade activators (such as sodium hydroxide and sodium silicate) greatly limit the widespread application of GPC. Therefore, there is a need to develop low-cost geopolymer concrete. Meanwhile, a few other challenges should also be overcome, such as difficulties to achieve consistent properties and to control efflorescence of GPC. Further research is required at both material and structural levels to address these issues. Particularly, there is a need to develop relevant building codes to promote the use of GPC in practice.]]
KW - concrete
KW - fire performance
KW - mechanical properties
KW - polymeric composites
KW - service life (engineering)
UR - http://handle.westernsydney.edu.au:8081/1959.7/uws:51900
UR - https://www.neduet.edu.pk/NED-Journal/2019/19vol3paper2.html
U2 - 10.35453/NEDJR-STMECH-2019-0007
DO - 10.35453/NEDJR-STMECH-2019-0007
M3 - Conference Paper
SP - 113
EP - 127
BT - Proceedings of the South Asia Conference on Earthquake Engineering (SACEE 2019), 21-22 February 2019, Karachi, Pakistan
PB - NED University of Engineering and Technology
T2 - South Asia Conference on Earthquake Engineering
Y2 - 21 February 2019
ER -