Paper Details

this paper is based on the experimental investigation of failure behavior of larger size steel reinforcedEngineered Cementitious Composite (R/ECC) beams in flexure. A typical mix of ECC known as M45 with PolyvinylAlcohol fiber content of 2% has been modified by reducing fiber content to 1.5% by volume and water to binder ratiowas increased from 0.25 to 0.33, in order to lower the compressive strength of PVA-ECC up to 33MPa. Failure behaviorof R/ECC beams in flexure is compared with normal RC beams having same dimensions, steel reinforcement andcompressive strength of concrete. R/ECC beams showed an improved performance in flexure under similar loadingconditions as compared to RC beams and maintained greater load carrying capacity even after cracking thus absorbinggreater energy after yield point. This might be due to the bridging effect of fibers in ECC at micro-structure level wherePVA fibers played role in transmitting stresses across the cracks and resisted the applied load. Cracking pattern ofR/ECC observed was different than RC beams as cracks in R/ECC were more in number and closely spaced whilemaintained smaller opening size. While in RC beams a typical Griffith crack pattern was observed. R/ECC beamsperformed better than RC beams in terms of energy dissipation under the given conditions and proved to be capable ofbeing used in critical elements with higher energy dissipation requirements.

Afzal Hussain, “Experimental Investigation of Failure behavior of Reinforced ECC Beams in Flexure”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 6, Issue 11, pp. 124-128, November 2019.