Materiales de Construcción, Vol 65, No 318 (2015)

Influence of supplementary cementitious materials on water transport kinetics and mechanical properties of hydrated lime and cement mortars


https://doi.org/10.3989/mc.2015.05214

C. Ince
Yeditepe University, Turkey

S. Derogar
Yeditepe University, Turkey

T. M. Michelitsch
Université Pierre et Marie Curie, France

Abstract


The purpose of this paper is an investigation of the possible role of supplementary cementitious materials (SCMs) on water transport kinetics and mechanical properties of hydrated lime (CL90) and Portland cement (PC) mortars. The properties of hydrated lime are significantly different from those of cement and therefore modifying fresh and hardened properties of these mortars are vital for mortar/substrate optimisation in masonry construction. The parameters investigated in this paper often are the main barriers to the use of hydrated lime in construction practice. The results show that transfer sorptivity and time to dewater freshly-mixed hydrated lime mortars can be modified when binder is partially replaced with SCMs. Compressive strength of CL90 mortars is increased systematically with the increased replacement levels of SCMs and the results are supported with the microstructural images. The ability to modify the water transport kinetics and mechanical properties allows compatibility between the mortar and the substrate unit in masonry construction.

Keywords


Mortar; Lime; Transport properties; Scanning electron microscopy (SEM)

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