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Titolo:
Tensile strain-hardening behavior of polyvinyl alcohol engineered cementitious composite (PVA-ECC)
Autore:
Li, VC; Wang, SX; Wu, C;
Indirizzi:
Univ Michigan, Dept Civil & Environm Engn, Ann Arbor, MI 48109 USA Univ Michigan Ann Arbor MI USA 48109 vironm Engn, Ann Arbor, MI 48109 USA
Titolo Testata:
ACI MATERIALS JOURNAL
fascicolo: 6, volume: 98, anno: 2001,
pagine: 483 - 492
SICI:
0889-325X(200111/12)98:6<483:TSBOPA>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
FIBER; MATRIX; CONCRETE; DESIGN;
Keywords:
cementitious; crack; strain;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Li, VC Univ Michigan, Dept Civil & Environm Engn, Ann Arbor, MI 48109 USA Univ Michigan Ann Arbor MI USA 48109 Engn, Ann Arbor, MI 48109 USA
Citazione:
V.C. Li et al., "Tensile strain-hardening behavior of polyvinyl alcohol engineered cementitious composite (PVA-ECC)", ACI MATER J, 98(6), 2001, pp. 483-492

Abstract

A high-performance polyvinyl alcohol fiber-reinforced engineered cementitious composite (PVA-ECC) for structural applications has been developed under the performance-driven design approach. Fiber, matrix, and fiber/matrix interfacial properties were tailored based on micromechanics models to satisfy the pseudo strain-hardening condition. In this paper, the effects of fiber surface treatment and sand content on the composite performance were experimentally investigated. Results from uniaxial tensile tests show an ultimate strain exceeding 4%, as well as an ultimate strength of 4.5 MPa for thecomposites, with a moderate fiber volume fraction of 2.0%. The specimens reveal saturated multiple cracking with crack width at ultimate strain limited to below 100 mum. The underlying reason of the distinctly different tensile behavior between normal fiber-reinforced concrete and PVA-ECC is highlighted by the comparison of complementary energy from their fiber bridging stress and crack opening curves.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/08/20 alle ore 08:18:06