%T Properties of nano-silica-modified self-compacting engineered cementitious composites
%V 162
%I Elsevier Ltd
%A B.S. Mohammed
%A B.E. Achara
%A M.F. Nuruddin
%A M. Yaw
%A M.Z. Zulkefli
%P 1225-1238
%X An engineered cementitious composite (ECC) is a type of high-performance fibre-reinforced composite developed based on micromechanical principles. To improve the modulus of elasticity and minimise the drying shrinkage in self-compacting (SC) ECC without adversely affecting its ductility, nano-silica (NS) is included in the cementitious composite. Twenty SC-ECC mixtures were proportioned, cast, cured, and tested to determine the fresh and hardened properties by using two variables: polyvinyl alcohol (PVA) fiber and NS particles. Five levels of NS (0, 1, 2, 3, and 4) and four levels of PVA (0.5, 1, 1.5, and 2) were considered. A response surface methodology was used to conduct multi-objective optimisation and develop mix proportions that produce the best response to the compressive strength, modulus of elasticity, and energy absorption. It was found that mixtures with 2 PVA and 1.89 NS produce the most desirable responses. © 2017 Elsevier Ltd
%K Compressive strength; Elastic moduli; Energy absorption; Mixtures; Multiobjective optimization; Shrinkage; Surface properties, Cementitious composites; Drying shrinkages; Engineered cementitious composite (ECC); Fresh and hardened properties; High-performance fibres; Nano Silica; Poly (vinyl alcohol) (PVA); Response surface methodology, Silica
%O cited By 90
%L scholars8378
%J Journal of Cleaner Production
%D 2017
%R 10.1016/j.jclepro.2017.06.137