Open Access
ARTICLE
Effect of Alkaline Electrolyzed Water on Performance Improvement of Green Concrete with High Volume of Mineral Admixtures
Guibin Liu1, Meinan Wang2, Qi Yu1, Qiuyi Li2, Liang Wang2,*
1
Center for Technological Development, Qingdao Qingjian New Material Group Co., Ltd., Qingdao, 266108, China
2
College of Civil Engineering & Architecture, Qingdao Agricultural University, Qingdao, 266109, China
* Corresponding Author: Liang Wang. Email:
(This article belongs to the Special Issue: Renewable building materials and properties)
Journal of Renewable Materials 2021, 9(11), 2051-2065. https://doi.org/10.32604/jrm.2021.015398
Received 16 December 2020; Accepted 20 February 2021; Issue published 04 June 2021
Abstract
The strength and durability of concrete will be significantly reduced at high volume of mineral admixture, and the
poor early strength of concrete also still needs to be solved. In this investigation, a highly active alkaline electrolyzed waters was used as mixing water to improve the early strength and enhance the durability of green concrete
with high volume mineral admixture, the influences of alkaline electrolyzed water (AEW) on hydration activity of
mineral admixture and durability of concrete were determined. The results showed that compared with natural
tap water, AEW can accelerate early hydration process of cement in concrete and produce comparatively more
hydrated products, leading to a 13.6% higher compressive strength than that of ordinary concrete at early age,
but the improvement effect of AEW concrete was relatively reduced at long-term age. Meanwhile, the activity
of mineral admixtures could be stimulated by AEW to some extent, the strength and durability performance
of AEW concrete after double doping 25% slag and 25% fly ash can still reach the level of ordinary cement concrete without mineral admixtures. The SEM micromorphology of 7 d hydrated natural tap water cement paste
was observed to be flaky and tabular, but the AEW cement pastes present obvious cluster and granulation phenomenon. The SEM microstructure of AEW concrete with mineral admixtures is more developed and denser
than ordinary tap water concrete with mineral admixtures. Therefore, the AEW probably could realize the effective utilization of about 50% mineral admixture amount of concrete without strength loss, the cement production
cost and associated CO
2 emission reduced, which has a good economic and environmental benefit.
Graphical Abstract
Keywords
Cite This Article
Liu, G., Wang, M., Yu, Q., Li, Q., Wang, L. (2021). Effect of Alkaline Electrolyzed Water on Performance Improvement of Green Concrete with High Volume of Mineral Admixtures.
Journal of Renewable Materials, 9(11), 2051–2065. https://doi.org/10.32604/jrm.2021.015398