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Hamad, MA, Nasr, M, Shubbar, AAF, Al-Khafaji, Z, Al Masoodi, Z, Al-Hashimi, O, Kot, P, Al Khaddar, R and Hashim, KS (2021) Production of Ultra-High-Performance Concrete with Low Energy Consumption and Carbon Footprint Using Supplementary Cementitious Materials Instead of Silica Fume: A Review. Energies, 14 (24). ISSN 1996-1073
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Abstract
The increase in cement production as a result of growing demand in the construction sector means an increase in energy consumption and CO2 emissions. These emissions are estimated at 7% of the global production of CO2. Ultra-high-performance concrete (UHPC) has excellent mechanical and durability characteristics. Nevertheless, it is costly and affects the environment due to its high amount of cement, which may reach 800–1000 kg/m3. In order to reduce the cement content, silica fume (SF) was utilized as a partial alternative to cement in the production of UHPC. Nevertheless, SF is very expensive. Therefore, the researchers investigated the use of supplementary cementitious materials cheaper than SF. Very limited review investigates addressed the impact of such materials on different properties of UHPC in comparison to that of SF. Thus, this study aims to summarize the effectiveness of using some common supplementary cementitious materials, including fly ashes (FA), ground granulated blast furnace slag (GGBS), metakaolin (MK) and rice husk ashes (RHA) in the manufacturing of UHPC, and comparing the performance of each material with that of SF. The comparison among these substances was also discussed. It has been found that RHA is considered a successful alternative to SF to produce UHPC with similar or even higher properties than SF. Moreover, FA, GGBS and MK can be utilized in combination with SF (as a partial substitute of SF) as a result of having less pozzolanic activity than SF.
| Item Type: | Article |
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| Uncontrolled Keywords: | 02 Physical Sciences, 09 Engineering |
| Subjects: | T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) T Technology > TH Building construction |
| Divisions: | Civil Engineering & Built Environment |
| Publisher: | MDPI AG |
| Date Deposited: | 09 Dec 2021 12:19 |
| Last Modified: | 09 Dec 2021 12:30 |
| DOI or ID number: | 10.3390/en14248291 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/15903 |
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