Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 222, Issue -, Pages 64-72Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2019.06.123
Keywords
Carboaluminates; Ettringite; Calcined clay; Limestone; Gypsum optimisation; Stratlingite
Categories
Funding
- Swiss Agency for Development and Cooperation
Ask authors/readers for more resources
This study aims to understand the impact of calcined clay, limestone and gypsum on the hydration mechanisms and phase development in limestone calcined clay cement (LC3). Crushed quartz was used as an inert filler to isolate the individual impact of calcined clay and limestone in LC3 systems. The hydration and the microstructure development in these systems were studied using X-ray diffraction (XRD), isothermal calorimetry, scanning electron microscopy (SEM), mercury intrusion porosimetry (MIP) as well compressive strength experiments. The presence of calcined clay helped in achieving a well-refined microstructure in LC3 within 7 days of hydration. A reduction in the degree of hydration of clinker phases was observed due the presence of calcined clay. The AFt/AFm phase assemblage was seen to depend on the blend composition. Additional ettringite was seen to form when the amount of gypsum was increased in the LC3 system. However, the increased gypsum content also resulted in the reduction in reactivity of limestone. (C) 2019 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