Effect of graphene oxide particle as nanomaterial in the production of engineered cementitious .

What is it about?

Graphene oxide is a desirable nanoparticle for strengthening composite material owing to its outstanding mechanical characteristics. This research examines the influence of graphene oxide (GO) on the mechanical characteristics of Engineered Cementitious Composites (ECCs), including their mechanical performance under tension and compression conditions. In this study, GO was utilized with different percentages like 0 %. 0.02 %, 0.04 %, 0.05 %, 0.06 %, 0.08 % and 0.10 % by the weight of cement for determining the compressive strength, direct tensile strength and modulus of elasticity of ECC mixture. However, the dry density is improving as the content of GO increases while the water absorption is getting reduced blended with GO as nanomaterials rises in the ECC mixture after 28 days correspondingly. It has been observed that the use of GO as nanomaterial up to 0.08 % in ECC mixture is providing optimum compressive strength, tensile strength and modulus of elasticity after 28 days respectively. The increased composite strength as well as the chemical connection formed by the introduction of GO between the polyvinyl alcohol (PVA) fiber and the cement matrix are both responsible for the excellent mechanical characteristics of the GO-reinforced ECC mixture.

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Why is it important?

Engineered cementitious composites (ECCs) are a kind of high-performance fiber-reinforced cementitious composite (HPFRCC) that has a unique combination of high ductility and medium fiber content. Using micromechanics-dependent theoretical approaches, ECCs are made to have high mechanical, physical, and durability qualities in both normal or harsh environments . It is a composite material designed to help the concrete industry enhance product effectiveness, reduce waste, provide ecological and economic advantages, and increase structural toughness . An ECC also has good resistance to cracking, pliability, and the capability to change the depth of cracks. This makes it the perfect material for making infrastructure projects last longer . This is due to ECCs' capacity to create consistent and numerous microcracks, which significantly improves its stability in terms of tensile strength and ductility when compared to other kinds of concrete . In terms of high tensile strength, an ECC is about 3–5 % (1.03–1.05 times) more efficient than standard concrete . According to research, ECC has compressive strengths ranging from 20 MPa to 95 MPa, tensile strengths ranging from 4.0 MPa to 12.0 MPa, and compressive strain ranging from 0.40 % to 0.65 % .

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