Journal
CEMENT & CONCRETE COMPOSITES
Volume 62, Issue -, Pages 82-89Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cemconcomp.2015.04.019
Keywords
Clay brick waste; Metakaolin; Durability; Mortar; Sulphate resistance; Carbonation
Funding
- CAPES (Brazilian Federal Agency for the Support and Evaluation of Graduate Education)
- State University of Santa Catarina (Science initiation scholarship)
Ask authors/readers for more resources
The use of metakaolin is known to help improve properties of Portland cement-based mortars. The presumed similarities between the characteristics of metakaolin and those of a powdered (<45 mu m) fired clay brick clean waste (CBW) led to the investigation of the effect on the durability of mortars of partial replacement (10, 25 and 40 wt.%) of Portland cement by CBW. Properties such as 28 and 90 days-compressive strength, water absorption, apparent porosity, absorption by capillarity, chloride retention, carbonation depth and sulphate resistance were evaluated. The CBW-containing cured mortars showed improved strength and density, as the result of combined physical and pozzolanic pore filling effect of added CBW. However, CBW-free mortar exhibited larger spreading and, being more porous, higher sulphate resistance and ability to absorb chlorides. Optimum performance was found for the 40 wt.% CBW mortar whose compressive strength can be up to 130% higher than that of the CBW-free mortar. (C) 2015 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