Water transport properties and Life Cycle Assessment of low-grade fly ash based cementitious materials
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Bibliographic Details
| Author(s): |
Manoj Kumar
(Department of Civil Engineering, Indian Institute of Technology Kanpur, Kanpur, India)
K. V. Harish (Department of Civil Engineering, Indian Institute of Technology Kanpur, Kanpur, India) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Engineering for Sustainable Development, New Delhi, India, 20-22 September 2023 | ||||
| Published in: | IABSE Congress New Delhi 2023 | ||||
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| Page(s): | 303-312 | ||||
| Total no. of pages: | 10 | ||||
| DOI: | 10.2749/newdelhi.2023.0303 | ||||
| Abstract: |
In this study, fly ash is used as a replacement for cement in mortar to find its impact on durability indicators and the environment regarding greenhouse gas (GHG} emissions. This study focuses on GHG emissions from the construction materials, strength, and capillary transport of water which is a function of the w/cm ratio, pore size distribution, and curing period. The capillary sorption process showed a very complex time-dependent relationship. The sorptivity and absorption of mortar were found at different w/cm ratios and fly ash replacement. Fly ash replacement showed a negative impact on compressive strength as well as on water absorption due to its similar particle size compared to cement. The secondary absorption rate was lower than ~59 % to 88% compared to the initial absorption rate for all the mixtures. 35 % replacement of cement with fly ash resulted in a ~27% reduction of GHG emissions compared to control mortar mixtures. |
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| Keywords: |
compressive strength pore size distribution greenhouse gas emissions Sorptivity Capillary sorption
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