Mechanical Performances of Green Engineered Cementitious Composites Incorporating Various Types of Sand

Abstract:

This paper evaluates the mechanical performances of green engineered cementitious composites (ECC) by means of compressive strength and flexural behaviour. Green ECC made of cement, ground granulated blast-furnace slag (GGBS), river sand or recycled concrete fine (RCF), polypropylene (PP) fiber, water and superplasticizer (SP) was employed in this study. Compression test result implies that green ECC incorporating either sieved river sand or sieved RCF (below 600 μm) in series G60 and G70 exhibited greater compressive strength compared with green ECC with unsieved river sand. In series G80, compressive strength of green ECC was not affected by RCF content. Flexural stress-mid deflection curves demonstrated that all green ECC specimens performed more ductile compared to normal concrete as they undergone large deformation capacity after the first cracking strength. Both compression and flexural tests suggested that mixture G80SRCF0.4 containing large amount of sieved RCF and least amount of cement is the best green ECC mixture in this study.

• Periodical: Key Engineering Materials (Volume 821)
• Pages: 512-517
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.821.512
• Online since: September 2019
• Authors: Siong Wee Lee*, Chai Lian Oh, Mohd Raizamzamani Md Zain, Norrul Azmi Yahya, Azerai Ali Rahman
• Keywords: Compressive Strength, Ductility, Engineered Cementitious Composites, Flexural Strength, Recycled Concrete Fines

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