Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 260, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2020.119917
Keywords
Ultra-high performance concrete (UHPC); Manufactured sand; Iron ore tailings (IOT); Compressive strength; Permeability
Categories
Funding
- National Key Research and Development Plan, China [2019YFC1907200]
- National Natural Science Foundation of China [51674062, 51974060, U1903216, 51774066]
- National Science and Technology Support Plan [2018YFC0604604]
- Key Research and Development Plan of Liaoning Province [2019JH2/10300051]
- Rejuvenating Liaoning Talents Plan [XLYC1905016]
Ask authors/readers for more resources
Iron ore tailings (IOT) are discharged as waste after the beneficiation process to concentrate iron ore, which has triggered a series of environmental problems. The influence of IOT as a replacement for manufactured sand (MS) (0%, 20%, 40%, 60%, 80%, and 100% by weight) on the compressive strength and permeability of UHPC mortars was investigated by multiple methods including scanning electron microscopy (SEM) and mercury intrusion porosimetry (MIP). The results showed that 40% IOT replacement yielded the best performance, and 80% substitution of IOT was comparable to the control mix regarding compressive strength. Additionally, the impermeability improved with increasing IOT content. To reduce the cost of UHPC production and minimize environmental problems, it is feasible to use IOT as a fine aggregate to partly replace manufactured sand. (C) 2020 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
