Stable Microcracking in Cementitious Materials

Krenchel, H; Stang, Henrik

doi:10.1007/978-94-009-2544-1_2

Cited by 21 publications

(8 citation statements)

References 6 publications

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“…ECC was meant to provide a solution to brittle properties typically found in NC, and to achieve a material exhibiting tensile ductility (Nawy, 2008). A number of options were attempted, including the use of continuous aligned fibres allowing for exceedingly high degree of ductility (Aveston et al, 1971;Krenchel & Stang, 1989), and discontinuous fibres (Allen, 1971;Lankard, 1986;Naaman, 1992). Eventually these materials capable of strain hardening behaviour were classified as high-performance fibre-reinforced composites (HPFRCC).…”

Section: Engineered Cementitious Compositementioning

confidence: 99%

Axial load behaviour of steel tube columns in-filled with various high performance concretes

Chu¹

2021

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This research concentrates on the axial load behaviour of circular, square and rectangular concrete filled steel tube (CFST) columns incorporating high-performance self-consolidating concretes such as ultra-high strength concrete (UHSC), engineered cementitious composite (ECC), lightweight concrete (LWC), and crumb rubber concrete (CRC). Seventy-four CFST specimens with varying slenderness, shape, concrete type and presence of internal bar reinforcements are tested experimentally under axial compression loading. The effect of these variables on axial load-deformation response, strain characteristics, failure modes, concrete confinement and axial strength are evaluated through experimental results. Performance of existing analytical/code based models for axial strength and concrete confined strength is evaluated. Concretes without coarse aggregates including UHSC proved less effective at enhancing axial strength of filled tube columns through confinement. In contrast, confinement in filled steel tube columns was found most effective with the use of concretes with coarse aggregates such as LWC and CRC.

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Section: Engineered Cementitious Compositementioning

confidence: 99%

Axial load behaviour of steel tube columns in-filled with various high performance concretes

Chu¹

2021

Preprint

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“…Attempts in achieving tensile ductility in concrete material have been made (Aveston et al, 1971), and later by Krenchel and Stang (1989), who demonstrated that with continuous aligned fibers, high tensile ductility hundreds of times that of normal concrete can be attained. Naaman and Reinhardt (2003) classified such material as High Performance Fiber Reinforced Cementitious Composites (HPFRCC).…”

Section: Development Of Fiber Reinforced Concrete (Frc)mentioning

confidence: 99%

Influence of polyethylene fiber and super plasticizer on the properties of fiber reinforced concrete

Wahed¹

2021

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This research concentrated on high strength Fiber Reinforced Concrete (FRC) with polyethylene fibers. Four different FRC mixtures having different dosage of superplasticizer and fiber contents were investigated for fresh state (flowability and temperature development/setting time), mechanical properties (compressive/flexural strength, modulus of elasticity and fracture energy), durability characteristics (rapid chloride permeability) and microstructure (using scanning electron microscopy ‘SEM’). All FRCS showed high strength development with low ductility (or strain hardening behavior). Increase of fiber content increased the tensile strength and fracture energy of FRCs. The SEM confirmed dense concrete matrix with stronger interfacial transition zone. No significant influence of superplasticizer (at the specified range of dosages) on the properties of FRCs was observed. The use shorter fiber compared to longer ones (18 mm used in this study) at lower dosages could improve ductility and flowability of the FRCs.

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“…Moreover, straw mats were also used as the reinforcement in the housing construction by Japanese and Chinese in the past. Later on, numerous attempts were made to develop HPFRCC materials with desirable properties by adding continuous aligned fibers (Aveston et al, 1971;Krenchel & Stang, 1989), and discontinuous fibers (Allen, 1971;Lankard, 1986;Naaman, 1992) for achieving high levels of ductility. A class of concrete materials capable of strain hardening behavior was eventually developed as High-Performance Fiber Reinforced Cementitious Composites (HPFRCC).…”

Section: -0 Introductionmentioning

confidence: 99%

Experimental investigation on repair and self-healing of tension-induced cracks in reinforced concrete panels

Ahmadi¹

2021

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<div>This research concentrates on repair and self-healing of tension cracks in RC panels subjected to direct tensile loading and hydrostatic water pressure by incorporating high-performance materials including High-strength epoxy, Glass Fiber Reinforced Polymer (GFRP) laminate, Engineered Cementitious Composite (ECC) slag, and ECC fly ash. The test setup simulates repairing internal surface of a cracked wall segment of a containment exposed to internal hydrostatic pressure. The study showed the applicability of ECC fly ash in repairing RC specimens with the ability to restore the structural strength along with reduced cracking, leakage, and enhanced self-healing behavior. GFRP exhibited high effectiveness in waterproofing and repair of damaged RC structures.</div><div>Applicability of epoxy injection in local repair of cracked RC specimens was confirmed, while brittle failure of epoxy resulted in development of a large crack and high leakage rate. Moreover, GFRP was found to be the most economical technique for repair of RC containments.</div>

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Stable Microcracking in Cementitious Materials

Cited by 21 publications

References 6 publications

Axial load behaviour of steel tube columns in-filled with various high performance concretes

Axial load behaviour of steel tube columns in-filled with various high performance concretes

Influence of polyethylene fiber and super plasticizer on the properties of fiber reinforced concrete

Experimental investigation on repair and self-healing of tension-induced cracks in reinforced concrete panels

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