Drying shrinkage of mortars with limestone filler and blast-furnace slag
DOI:
https://doi.org/10.3989/mc.2003.v53.i271-272.284Keywords:
portland cement, limestone filler, blastfurnace slag, drying shrinkage, restrained shrinkageAbstract
During the 1990's the use of cements made with port land clinker and two mineral admixtures, called ternary or blended cements, has grown considerably. Nowadays, cements containing several combinations of fly ash and silica fume, blast-furnace slag and silica fume or blast-furnace slag and limestone filler are commonly used. There are numerous works on the influence of blended cements on the fresh state and mechanical properties of mortar and concrete, but the their deformations due to drying shrinkage are not so well described. Analysis of drying shrinkage is relevant because this property influences the possibility of cracking occurrence and, hence, the deterioration of mechanical and durable properties of concrete structures. This paper evaluates the influence on the drying shrinkage of mortars of variable contents of limestone filler and/or blast-furnace slag in Portland cement. Additionally, flexion strength and non evaporable water content were evaluated. Test results show that the inclusion of these mineral admixtures, Joint or separately, increments drying shrinkage of mortars at early ages. Despite this fact, mortars made with limestone filler cement are less susceptible to cracking than mortars made with cements incorporating blast-furnace slag or both admixtures.
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Published
2003-12-30
How to Cite
Carrasco, M. F., Bonavetti, V. L., & Irassar, E. F. (2003). Drying shrinkage of mortars with limestone filler and blast-furnace slag. Materiales De Construcción, 53(271-272), 5–16. https://doi.org/10.3989/mc.2003.v53.i271-272.284
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Research Articles
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