Structural performance of RC slabs provided by pre-cast ECC strips in tension cover zone

Afefy, Hamdy M.; Mahmoud, Mohamed H.

doi:10.1016/j.conbuildmat.2014.04.096

Cited by 47 publications

(16 citation statements)

References 17 publications

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“…Due to the bridging effect of structural fibres, ECC displays a characteristic of multiple stable micro-cracks, unlike the single unstable cracking of normal concrete under tension. In addition, ECC's high tensile ductility and self-controlled micro-crack width lead to its good durability under different mechanical and environmental conditions [14][15][16]. Some available studies have provided the advantages of applying ECC material into structures, which prevent the brittle fracture of element.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on bond behaviour between BFRP bar and engineered cementitious composite

Wang

Sun

Peng

et al. 2015

Construction and Building Materials

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Section: Introductionmentioning

confidence: 99%

Experimental study on bond behaviour between BFRP bar and engineered cementitious composite

Wang

Sun

Peng

et al. 2015

Construction and Building Materials

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“…In order to increase the corrosive resistance nature of structures, ECC is used as a shielding layer. Other targets of ECC include expansion joints in highway pavements [14], interior beam-column connection [15], rigid framed railway bridges [16], RC slabs [17] and expansion joints in bridge decks [18].…”

Section: Abstratomentioning

confidence: 99%

Study on impact of fiber hybridization in material properties of engineered cementitious composites

Krishnaraja¹,

Anandakumar²,

Jegan³

et al. 2019

Matéria (Rio J.)

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ABSTRATO Compósito Cimentício Projetado (ECC) é um tipo de compósitos cimentícios reforçados com fibras de alto desempenho melhorados com bom comportamento de tração, compressão e flexão. O ECC é conhecido por seu comportamento de endurecimento de tensão sob tensão e tem sido cada vez mais aplicado na prática de engenharia. O processo de adicionar duas ou mais fibras em uma mistura é conhecido como hibridização. Os drives de compósitos híbridos se beneficiam de cada uma das fibras individuais adicionadas e exibem maior capacidade de resistência e deformação em comparação com os compostos de fibra monofibra. As principais aplicações da CEC são um reforço estrutural na construção e também a hibridização de fibras orgânicas são válidas apenas para condições subaquáticas e fornecerão testes adicionais relativos à capacidade de combus-tão ou inflamabilidade. Este trabalho apresenta os resultados obtidos a partir de três misturas de ECC (PVA, PP, STEEL) e quatro Compósitos Cimentícios Híbridos de Engenharia (HECC) com diferentes combinações de fração volumétrica com PVA, PP, STEEL. Os estudos experimentais foram realizados para investigar os comportamentos mecânicos de CEC e HECC. Os resultados indicam que este processo de hibridação tem um desempenho notável na resistência à compressão, resistência à tração direta e resistência à flexão.

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“…Afefy and Mohamed placed pre-cast and cured ECC strips in the tension cover zone of one-way reinforced RC slabs beside the main steel reinforcement. Test results showed that the ECC strips enhanced the structural performance of the slabs at both service and ultimate limit states [25]. Jiang et al found that introducing a new ECC layer on the tensile side improves the cracking control and flexural behavior of a fiber-reinforced polymer (FRP) reinforced sea sand and seawater concrete beam, especially in the serviceability limit state [26].…”

Section: Introductionmentioning

confidence: 99%

Shear Behaviors of RC Beams Externally Strengthened with Engineered Cementitious Composite Layers

Wang

Yang

Pan³

et al. 2019

Materials

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The shear behaviors of reinforced concrete (RC) beams externally strengthened with engineered cementitious composite (ECC) layers were studied and the strengthening effect was evaluated based on a truss and arch model. The beams were designed without web reinforcement in the middle part and ECC was sprayed onto both sides of the beams to the designed thicknesses, which were 20 mm and 40 mm. A series of four-point bending experiments were conducted and analyzed. The development of the shear strain in each side of the beams was recorded by strain rosettes formed with three fiber Bragg grating (FBG) sensors. The thickness of ECC layers, reinforcement ratios, and shear span-to-depth ratios were considered and analyzed. This is an effective way to shear strengthen RC beams with ECC layers. The ultimate load of the strengthened specimen can be improved by 89% over the control specimen. Strengthening an RC beam into an under-reinforced beam should be avoided. The FBG sensors are suitable to measure and monitor the development of shear strain in the side of the strengthened specimen. Based on the truss and arch model, an evaluation of the shear strengthening effect was established and the results agree well with the experimental results.

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Structural performance of RC slabs provided by pre-cast ECC strips in tension cover zone

Cited by 47 publications

References 17 publications

Experimental study on bond behaviour between BFRP bar and engineered cementitious composite

Experimental study on bond behaviour between BFRP bar and engineered cementitious composite

Study on impact of fiber hybridization in material properties of engineered cementitious composites

Shear Behaviors of RC Beams Externally Strengthened with Engineered Cementitious Composite Layers

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