A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Investigation of Sulphate Attack on Limestone-Calcined Clay Cement Mortars
Calcined clay, especially in combination with limestone powder, is emerging as an excellent supplementary cementitious material. While a number of studies have reported on the pozzolanic performance of calcined clay blended cements, a detailed investigation on the durability characteristics is not available in the existing literature. In this context, the resistance of calcined clay blended cements against sulphate attack needs to be comprehensively studied to understand its potential for use in sulphate rich environments. This paper reports an experimental investigation on cementitious mortars that are subjected to (i) continuous immersion and (ii) alternate wetting and drying, in highly concentrated sodium sulphate solutions, with a methodology based loosely on ASTM C1012. The length change and flexural strengths are monitored periodically to get an assessment of the degree of damage. The cementitious systems considered in the study are: (i) OPC, (ii) OPC with 30 % fly ash, and (iii) Limestone calcined clay cement (LC3). The alterations in microstructure are studied using X-ray diffraction and thermal analysis. The work reported in this paper is part of a larger project that investigates the potential for limestone—calcined clay based cementitious binders in concrete.
Investigation of Sulphate Attack on Limestone-Calcined Clay Cement Mortars
Calcined clay, especially in combination with limestone powder, is emerging as an excellent supplementary cementitious material. While a number of studies have reported on the pozzolanic performance of calcined clay blended cements, a detailed investigation on the durability characteristics is not available in the existing literature. In this context, the resistance of calcined clay blended cements against sulphate attack needs to be comprehensively studied to understand its potential for use in sulphate rich environments. This paper reports an experimental investigation on cementitious mortars that are subjected to (i) continuous immersion and (ii) alternate wetting and drying, in highly concentrated sodium sulphate solutions, with a methodology based loosely on ASTM C1012. The length change and flexural strengths are monitored periodically to get an assessment of the degree of damage. The cementitious systems considered in the study are: (i) OPC, (ii) OPC with 30 % fly ash, and (iii) Limestone calcined clay cement (LC3). The alterations in microstructure are studied using X-ray diffraction and thermal analysis. The work reported in this paper is part of a larger project that investigates the potential for limestone—calcined clay based cementitious binders in concrete.
Investigation of Sulphate Attack on Limestone-Calcined Clay Cement Mortars
RILEM Bookseries
Scrivener, Karen (editor) / Favier, Aurélie (editor) / Suma, Fathima (author) / Santhanam, Manu (author)
2015-05-08
1 pages
Article/Chapter (Book)
Electronic Resource
English
Degradation of limestone calcined clay cement (LC3) mortars under sulfate attack
| Springer Verlag | 2023
Effects of sulfuric acid attack on hydrated calcined clay–limestone cement mortars
| Taylor & Francis Verlag | 2021
Investigation on Limestone Calcined Clay Cement System
| TIBKAT | 2020
Investigation on Limestone Calcined Clay Cement System
| Springer Verlag | 2020