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Titolo:
IMPROVING THE BOND STRENGTH OF CONCRETE TO REINFORCEMENT BY ADDING METHYLCELLULOSE TO CONCRETE
Autore:
FU XL; CHUNG DDL;
Indirizzi:
SUNY BUFFALO,DEPT MECH & AEROSP ENGN BUFFALO NY 14260 NIAGARA MOHAWK POWER CORP SYRACUSE NY 13202 SUNY BUFFALO,COMPOSITE MAT RES LAB BUFFALO NY 14260
Titolo Testata:
ACI materials journal
fascicolo: 5, volume: 95, anno: 1998,
pagine: 601 - 608
SICI:
0889-325X(1998)95:5<601:ITBSOC>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
FIBER SURFACE-TREATMENT; POLYMER ADDITION; CARBON-FIBER; STEEL FIBER; CEMENT; LATEX; ADMIXTURES; RESISTIVITY; MORTARS;
Keywords:
BOND STRENGTH; CARBON; CEMENT; CONCRETE; ELECTRICAL RESISTIVITY; FIBER; LATEX; METHYLCELLULOSE; SILICA FUME; STEEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
X.L. Fu e D.D.L. Chung, "IMPROVING THE BOND STRENGTH OF CONCRETE TO REINFORCEMENT BY ADDING METHYLCELLULOSE TO CONCRETE", ACI materials journal, 95(5), 1998, pp. 601-608

Abstract

The use of methylcellulose (0.4 to 0.8 percent by weight of cement) as an admixture in cement paste or concrete was found to increase the shear bond strength with steel reinforcing bar steel fiber or carbon fiber to values attained by using latex (20 percent by weight of cement)as an admixture, even though later was used in a much larger quantitythan methylcellulose. The bond strength increased with increasing methylcellulose amount. The contact electrical resistivity between cementand fiber or between concrete and reinforcing bar was increased by latex addition, bur not changed by methylcellulose addition. The combined use of silica fume (15 percent by weight of cement) and methylcellulose (0.4 per cent by weight of cement) as admixtures was found to giveconcrete that exhibited high bond strength to steel reinforcing bar in addition to previously reported high tensile modulus, tensile ductility, flexural strength and flexural toughness; the bond strength attained was higher than that attained by using either silica fume or methylcellulose as admixture. Latex in combination with silica fume did notwork due to low workability Methylcellulose in combination with silica fume was effective due to silica fume increasing the matrix modulus and methylcellose promoting adhesion.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 07:17:11