Mechanical behaviour of a polyvinyl alcohol fibre reinforced engineered cementitious composite (PVA-ECC) using local ingredients

Meng, Dan; Huang, Ting; Zhang, Y.X.; Lee, Chi King

doi:10.1016/j.conbuildmat.2017.02.158

Cited by 235 publications

(89 citation statements)

References 20 publications

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“…Other than this, PVA fibre imparts ductility to the cementitious composites by eliminating brittle fracture and inducing multiple micro-cracks, which help prevent catastrophic failure. This ductile behaviour is characterized by high tensile strain capacity (1-5%) and high energy absorption or toughness to the composites [8,9]. Also, this fibre has good resistance to chemical attack, typically in alkaline condition, due to the presence of acetate group (CH 3 CO 2 -), *For correspondence which absorbs calcium hydroxides [10].…”

Section: Introductionmentioning

confidence: 99%

Mechanical characteristics and flexural behaviour of fibre-reinforced cementitious composite containing PVA and basalt fibres

Loh

Tan

et al. 2019

Sādhanā

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Fibre-reinforced cementitious composite (FRCC) is a type of composite that uses high volume of fibres to attain ductile properties. In this research, the effects of two different fibres, namely polyvinyl alcohol (PVA) and basalt, on the mechanical properties of FRCC such as compressive, splitting tensile and flexural strengths were investigated. The fibres were used in varying volume fraction, which includes 1.0%, 1.5% and 2.0% and a hybrid combination of 1.5% basalt fibre with 1.5% PVA fibre for the preparation of the FRCC. The results showed that while the fibres had minimal effect on the compressive strength of FRCC, significant improvements in the splitting tensile and flexural strengths were found. In the comparison of the flexural performances, the introduction of PVA fibre in FRCC led to superior properties and it exhibited more ductile failure mode compared with basalt fibre and the optimum fibre dosage to be added was determined to be 1.5%.

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Section: Introductionmentioning

confidence: 99%

Mechanical characteristics and flexural behaviour of fibre-reinforced cementitious composite containing PVA and basalt fibres

Loh

Tan

et al. 2019

Sādhanā

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“…e target of the ECC mix proportion design is to obtain the ECC mixture with a high ultimate tensile strain and large fracture energy at a certain strength. Based on former engineering experience [7,13,[22][23][24][25][26][27][28][29][30][31][32][33][34][35], the water-to-binder ratio mainly affects the strength of the cement matrix; the fiber mainly affects the ultimate tensile strain capacity and the fracture energy of ECC; the quartz sand which was used as filler mainly affects the mixing process because sand could improve the fluidity of cement-based materials including ECC; and the waterreducing admixture mainly affects the compactness, fluidity, and workability of the cement matrix. Accordingly, fiber/ cement mass ratio and water-to-binder ratios were determined as the main factors for the ECC design.…”

Section: Ecc MIX Proportion Uniform Test Designmentioning

confidence: 99%

“…Fly ash/cement mass ratio, water-cement mass ratio, and fiber/cement mass ratio were finally determined as the three main factors, while the quartz sand and waterreducing admixture were chosen as two minor factors. e ranges of the main factors were determined according to statistics based on existing work on ECC [7,13,[22][23][24][25][26][27][28][29][30][31][32][33][34][35]. According to the existing data base [7,13,[22][23][24][25][26][27][28][29][30][31][32][33][34][35], the range of the fly ash/cement mass ratio is from 0.11 to 3.00, the water-cement ratio is from 0.42 to 1.2, and the fiber/mortar volume ratio V f is 0-2%.…”

Section: Ecc MIX Proportion Uniform Test Designmentioning

confidence: 99%

ECC Design Based on Uniform Design Test Method and Alternating Conditional Expectation

Yang

Ding

et al. 2019

Mathematical Problems in Engineering

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Engineered cementitious composites (ECC) have higher ultimate tensile strains than normal concrete. The mechanical properties of ECC strongly depend on raw materials and the mix proportions. The uniform design test method and alternating conditional expectation, which is a nonparametric regression analysis method, were used to design the ECC mix proportion. According to the regression analysis, the optimized W/B, S/B, and F/B ranges could be obtained as 0.35–0.42, 0.25–0.3, and 0.02, respectively. The tested proportions for validation were randomly adopted within the range of W/B, S/B, and F/B. The uniaxial compression, tension, and four-point bending tests were conducted to verify the material behaviour of the designed ECC. Results showed that all the specimens had large ultimate tensile strains and high fracture energy capacities, and strain hardening was also observed. The fibers were found to be uniformly distributed in the specimens by using a scanning electron microscope. This paper may provide theoretical and practical guidance for the ECC and other cement-based material mix proportion design.

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“…Besides, three standard cylinders of 100 mm × 200 mm were prepared from each batch of ECC and LWC mix to obtain the modulus of elasticity and compressive strength at 28 days as per AS 1012 (16). Three dog-bone specimens of standard dimensions (17) were prepared for ECC and tested for tensile strength. For HSS plates, three coupon specimens were prepared and tested under uniaxial tension.…”

Section: Test Specimensmentioning

confidence: 99%

“…. Three dog-bone specimens of standard dimensions(17) were prepared for ECC and tested for tensile strength. Three dog-bone specimens of standard dimensions(17) were prepared for ECC and tested for tensile strength.…”

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confidence: 99%

Flexural behaviour of engineered cementitious composite encased high strength steel composite beam

et al. 2019

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In this paper, the flexural performance of a new type of composite beam comprised of High Strength Steel (HSS) section encased by polyvinyl alcohol-engineered cementitious composite (PVA-ECC) and lightweight concrete (LWC) is studied. An experimental investigation on the flexural performance of HSS beams encased by different thickness of ECC is conducted and their performances are compared with bare HSS beam and normal strength concrete (NSC) encased HSS beam. Four-point bending tests are carried out on simply supported beams including one bare HSS beam, one NSC encased HSS (NSC-HSS) beam and two ECC-LWC encased HSS (ECC-HSS) beams. For ECC-HSS beams, both top and bottom flanges of the HSS sections are encased with PVA-ECC while the web was encased by LWC. The test results showed a significant improvement in loadcarrying capacity, ductility and failure modes for ECC-HSS beams when comparing with bare HSS and NSC-HSS beam.

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Mechanical behaviour of a polyvinyl alcohol fibre reinforced engineered cementitious composite (PVA-ECC) using local ingredients

Cited by 235 publications

References 20 publications

Mechanical characteristics and flexural behaviour of fibre-reinforced cementitious composite containing PVA and basalt fibres

Mechanical characteristics and flexural behaviour of fibre-reinforced cementitious composite containing PVA and basalt fibres

ECC Design Based on Uniform Design Test Method and Alternating Conditional Expectation

Flexural behaviour of engineered cementitious composite encased high strength steel composite beam

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