ISSN 2319-5347, ISI Impact Factor: 0.763

VOLUME 05 NO. 02 APRIL 2016:

Title:         Experimental investigation of the mechanical properties of Engineered Cementitious Composites (ECC)
Authors:     Mustafa Kamal, Sajjad Wali Khan, Khan Shahzada, Muhammad Alam
Abstract:  The primary aim of this research was to study the mechanical properties (i.e. compressive, tensile andflexural strengths) of the engineered cementitious composites (ECC). To achieve the aim of the project, an experimental study was carried out to investigate the properties of ECC mix with varying fiber contents (poly vinyl alcohol) at different maturation time of 14 & 28 days respectively. The effect of different fiber contents (0,0.5, 1, 1.5 and 2%) on compressive, flexural, and tensile strengths as well as ductility was experimentallyinvestigated. 45 Cylinders and 30 beam specimens were casted according to ASTM standards, whereas 15 thin strips of 1.5 inch thickness were casted for checking its ductile behavior. A large body of experimental results was obtained by testing these specimens in Universal Testing Machine (UTM) in material testing laboratory of the Department of Civil Engineering, UET, Peshawar. Furthermore, the effect of increasing PVA fiber contents on the properties of fresh ECC (workability and density) was also studied. The test results showed improved compressive, flexural and tensile strengths at higher content of fibers. The compressive and flexural strengths of ECC was found to be maximum at a fiber dosage of 2% and 1.5 % respectively. Similarly, increasing PVA fibers increased the tensile strength of the ECC as well. However, workability of concrete was found to decrease with increasing fiber contents in ECC.

Keywords:  Engineered Cementitious Composites, Poly Vinyl Alcohol, Mechanical Properties, Fiber content
Pages:          40-45

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