Engineering Properties of Limestone Calcined Clay Concrete
Open Access
- 17 August 2018
- journal article
- research article
- Published by Japan Concrete Institute in Journal of Advanced Concrete Technology
- Vol. 16 (8), 343-357
- https://doi.org/10.3151/jact.16.343
Abstract
In this paper, various engineering properties of both fresh and hardened concrete with various limestone and calcined clay contents are investigated. Two concrete grades were considered: 50 MPa or 30 MPa average 28 days compressive strength. A low grade calcined clay was used with about 50% amorphous phase. A reduction in concrete workability was observed with the increase in General Purpose (GP) cement substitution. Superplasticiser was required to obtain a slump equivalent to that of reference GP cement concrete. With 15% GP cement replacement rate, the 28 days compressive strength achieved was superior to that of reference grade 50 MPa concrete, reaching 58 MPa. However, the average 28 days compressive strength reduced significantly with 30% and 45% GP cement replacement, reaching about 35 MPa. Considering concretes with similar 28-day compressive strength, results showed that the 7-day compressive strength was only marginally affected by the limestone and calcined clay substitu-tion. Mercury intrusion porosimetry results revealed that incorporating calcined clay and limestone led to significant refinement of the porosity: increase in the quantity of pores inferior to 0.01µm and reduction in the quantity of coarse pores (with size > 0.1 µm).Keywords
This publication has 59 references indexed in Scilit:
- Impact of metakaolin characteristics on the rheological properties of mortar in the fresh stateCement and Concrete Composites, 2013
- Assessment of pozzolanic activity of different calcined claysCement and Concrete Composites, 2013
- The Filler Effect: The Influence of Filler Content and Surface Area on Cementitious Reaction RatesJournal of the American Ceramic Society, 2013
- Cement substitution by a combination of metakaolin and limestoneCement and Concrete Research, 2012
- Influence of limestone filler and viscosity-modifying admixture on the shrinkage of self-compacting concreteCement and Concrete Research, 2012
- Practical evaluation of relationship between concrete resistivity, water penetration, rapid chloride penetration and compressive strengthConstruction and Building Materials, 2011
- Carboaluminate Phases Formation During the Hydration of Calcite-Containing Portland CementJournal of the American Ceramic Society, 2010
- Improvement of the early-age reactivity of fly ash and blast furnace slag cementitious systems using limestone fillerMaterials and Structures, 2010
- CARBON DIOXIDE EMISSIONS FROM THE GLOBAL CEMENT INDUSTRYAnnual Review of Energy and the Environment, 2001
- 3. Resistivity Characteristics of Geologic TargetsPublished by Society of Exploration Geophysicists ,1988