Experimental and numerical analysis of curling behavior of natural hydraulic lime - cement based mortars
作者： Reda Jaafri , Hamza Samouh , Emmanuel Roziere , Syed Yasir Alam , Vincent Wisniewski
DOI: 10.1016/J.CEMCONRES.2018.11.016
关键词:
摘要: Abstract This paper aims to identify the parameters influencing curling phenomenon, and understand influence of cement substitution by increasing proportions Natural Hydraulic Lime (NHL) on kinetics final magnitude. The developed experimental approach shows that is mainly driven progress drying front in specimen depth. A common curve curling-drying depth observed for all studied mortars independently their mix-design. Results also show NHL leads a significant reduction curling's amplitude delayed its start time due microstructure mortars. Based results and, mainly, spatio-temporal internal relative humidity evolutions, poroviscoelastic model which incorporates well-accepted mechanisms shrinkage proposed. able reproduce evolution estimate viscoelastic response starts developing as soon material develops sufficient rigidity, magnitude related viscoelastic-aging modulus about same
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