Production of Ultra-High-Performance Concrete with Low Energy Consumption and Carbon Footprint Using Supplementary Cementitious Materials Instead of Silica Fume: A Review

Energies

Zainab Al-Khafaji¹  Mays A. Hamad²  Rafid Alkhaddar³  Zainab Al Masoodi⁴  Khalid Hashim⁵  Osamah Al-Hashimi⁵  Ali Shubbar⁵  Patryk Kot⁵  Mohammed Nasr⁶ 

[1] Al-Furrat Al-Awsat Distribution Foundation, Ministry of Oil, Babylon 51001, Iraq;Building and Construction Engineering Technology Department, Al-Mustaqbal University College, Hillah 51001, Iraq;Dean of Academic Affairs, Oryx Universal College in Partnership with LJMU, Doha P.O. Box 12253, Qatar;National Center for Construction Laboratories (NCCL), Ministry of Construction and Housing, Babylon 51001, Iraq;School of Civil Engineering and Built Environment, Liverpool John Moores University, Liverpool L3 3AF, UK;Technical Institute of Babylon, Al-Furat Al-Awsat Technical University (ATU), Babylon 51015, Iraq;

关键词: ground granulated blast furnace slag;    metakaolin;    rice husk ashes;    silica fume;    ultra-high-performance concrete;   

DOI  :  10.3390/en14248291

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown