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Titolo:
Interface between steel rebar and concrete, studied by electromechanical pull-out testing
Autore:
Fu, XL; Chung, DDL;
Indirizzi:
SUNY Buffalo, Composite Mat Res Lab, Buffalo, NY 14260 USA SUNY Buffalo Buffalo NY USA 14260 site Mat Res Lab, Buffalo, NY 14260 USA
Titolo Testata:
COMPOSITE INTERFACES
fascicolo: 2, volume: 6, anno: 1999,
pagine: 81 - 92
SICI:
0927-6440(1999)6:2<81:IBSRAC>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
BOND STRENGTH; POLYMER ADDITION; CEMENT; RESISTIVITY; FIBER;
Keywords:
concrete; cement; steel; bond; strength; electrical; polymer; ozone; sand blasting; curing age;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Fu, XL SUNY Buffalo, Composite Mat Res Lab, Buffalo, NY 14260 USA SUNY Buffalo Buffalo NY USA 14260 t Res Lab, Buffalo, NY 14260 USA
Citazione:
X.L. Fu e D.D.L. Chung, "Interface between steel rebar and concrete, studied by electromechanical pull-out testing", COMPOS INTE, 6(2), 1999, pp. 81-92

Abstract

The interface between concrete and steel rebar was evaluated by electromechanical pullout testing, which involved measuring the shear bond strength and contact electrical resistivity of each sample. The bond strength was increased by steel rebar surface treatment (acetone, water, ozone or sand blasting, with ozone being most effective and acetone being least effective), polymer addition to concrete (methylcellulose or latex), increase in water/cement ratio of concrete (particularly from 0.45 to 0.50), and decrease in curing age (particularly from 14 to 7 days). The origins of these effects are rebar cleansing for acetone treatment, rebar surface oxide film formationfor water and ozone treatments, rebar surface roughening for sand blasting, polymer interface layer formation for polymer addition, and decreased interfacial void content for water/cement ratio increase and for curing age decrease.

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Documento generato il 29/11/20 alle ore 18:39:21