Multiple Cracking Sequence and Saturation in Fiber Reinforced Cementitious Composites

Kanda, Tetsushi; Li, Victor C.

doi:10.3151/crt1990.9.2_19

Cited by 183 publications

(59 citation statements)

References 3 publications

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“…PVA fiber with 14 m in diameter and 1,500 MPa of tensile strength was reported to indicate high potential for PSH behavior in bending (Garcia et al 1997). This fiber is expected to involve severe fiber rupture in composites because of small fiber diameter and high fiber-matrix interfacial properties dominated by chemical bond (Kanda and Li 1998b). Quantitative micromechanics evaluation for this composite and the fundamental basis for the observed high composite performance so far have not been clarified in the published literature.…”

Section: Introductionmentioning

confidence: 99%

New Micromechanics Design Theory for Pseudostrain Hardening Cementitious Composite

Kanda

1999

J. Eng. Mech.

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230

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The micromechanics design theory has realized random short fiber-reinforced cement composites showing pseudostrain hardening (PSH) behavior with over 5% of strain capacity under tension. Nevertheless, this existing theory currently is limited to specific constituent properties, which does not account for chemical bond and fiber rupture. This article presents a new design theory that eliminates this restriction, achieving fiber rupture type PSH-random short fiber-reinforced cement composites with high-performance hydrophilic fibers like polyvinyl alcohol fibers. Uniaxial tensile tests are conducted employing polyvinyl alcohol fiber composites, the results of which support the validity of the proposed theory. Furthermore, parametric study employing the proposed theory quantitatively evaluates the effects of composite's micromechanics parameters, such as bond strength and fiber strength, on composite performance. This parametric study reveals that continuously increasing the degree of fiber rupture (fiber rupture intensity) enhances the strength performance of composites but not energy performance. However, an optimum rupture intensity exists for maximizing energy performance, which is critical for PSH behavior. The consistency between theoretical predictions and experimental results consequently demonstrates that the proposed theory can be utilized practically as a powerful and comprehensive tool for PSH composite design.

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Section: Introductionmentioning

confidence: 99%

New Micromechanics Design Theory for Pseudostrain Hardening Cementitious Composite

Kanda

1999

J. Eng. Mech.

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230

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“…Among them, high molecular weight polyethylene fiber is expected to be utilized as a defensive material, because of its good balance between the tensile strength and the elongation. Furthermore, this fiber has already been utilized as a reinforcing material in engineered cementitious composites (ECC) with pseudo strain hardening behavior (Li et al 1995;Kanda et al 1998). The authors have also studied the influences of mix proportion of concrete matrix, shape of short fiber, and fiber volume fraction on slump and various mechanical characteristics of polyethylene fiber reinforced concrete (PEFRC).…”

Section: Introductionmentioning

confidence: 99%

Blast Resistance of Polyethylene Fiber Reinforced Concrete to Contact Detonation

Yamaguchi

Murakami

Takeda

et al. 2011

ACT

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When designing blast-resistant reinforced concrete (RC) structures, reducing spall damage due to reflected tensile stress waves is a major problem. To investigate the applicability of polyethylene fiber reinforced concrete (PEFRC) for use in blast-resistant RC structures, experimental investigations were conducted to evaluate the damage to PEFRC slabs subjected to contact detonation. As a result, it was shown that PEFRC was effective in reducing the spall damage due to contact detonation as compared with normal RC. Moreover, an equation for estimating damage depth to the PEFRC slab subjected to contact detonation was derived based on the test results.

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“…038 mm and V f ¼ 1%. The details of the experiments on two specimens using the above data may be found in Wu and Li (1995) and Kanda and Li (1998). The experimental test results for the two specimens are also shown in Figure 12.…”

Section: Results and Comparative Studymentioning

confidence: 96%

Mechanics of SFRC under tension, part II: experimental validation

Ghosh¹,

Bhattacharjya²,

Chakraborty³

2010

Magazine of Concrete Research

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This is the second of a two-part paper involving a fundamental study of the tensile stress-strain relationship of short-fibre-reinforced concrete under tension. The validation of the analytical model developed in the first part is presented here. The tensile stress-strain results obtained from the theoretical model are compared with the results obtained from the experimental investigations for a wide range of fibre lengths, diameters and volume fractions. The results of the present model are also compared with the tensile stress-strain results obtained from the existing literature. The tensile stress-strain results obtained from the proposed theoretical predictions are found to be in good agreement with the experimental results. The predictability of the analytical approach is also scrutinised for peak load, load at ultimate deformation, ductility and so on. The analytical results show a good conformity, with respect to peak load, toughness and the natures of the ascending as well as descending branches.

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Multiple Cracking Sequence and Saturation in Fiber Reinforced Cementitious Composites

Cited by 183 publications

References 3 publications

New Micromechanics Design Theory for Pseudostrain Hardening Cementitious Composite

New Micromechanics Design Theory for Pseudostrain Hardening Cementitious Composite

Blast Resistance of Polyethylene Fiber Reinforced Concrete to Contact Detonation

Mechanics of SFRC under tension, part II: experimental validation

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