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Titolo:
Effect of admixtures on thermal and thermomechanical behavior of cement paste
Autore:
Fu, XL; Chung, DDL;
Indirizzi:
SUNY, Compos Mat Res Lab, New York, NY USA SUNY New York NY USASUNY, Compos Mat Res Lab, New York, NY USA
Titolo Testata:
ACI MATERIALS JOURNAL
fascicolo: 4, volume: 96, anno: 1999,
pagine: 455 - 461
SICI:
0889-325X(199907/08)96:4<455:EOAOTA>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
MECHANICAL-PROPERTIES; CONCRETE; DIFFUSIVITY;
Keywords:
admixtures; cement pastes; thermal properties;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
28
Recensione:
Indirizzi per estratti:
Citazione:
X.L. Fu e D.D.L. Chung, "Effect of admixtures on thermal and thermomechanical behavior of cement paste", ACI MATER J, 96(4), 1999, pp. 455-461

Abstract

A comparative study was conducted on the thermal and thermomechanical behavior of cement pastes containing various additives (silica fume, latex methylcellulose, and short carbon fibers). The thermal conductivity was deceased by silica fume, methylcellulose, or latex by up to 46 percent. It was notincreased by carbon fibers. The specific heat was increased by silica fume, latex methylcellulose, or carbon fibers by up to 9 percent. The flexural storage modulus decreased reversibly with increasing temperature from 30 to150 C, whereas the weight loss upon heating was irreversible. Silica fume gave higher modulus than methylcellulose or latex which in turn gave highermodulus than the absence of any additive. The creep rate was lower for silica fume than methylcellulose or latex, for which the creep rate was lower than the absence of any additive. The apparent coefficient of thermal expansion teas reduced by silica fume (but still positive), but was negative formethylcellulose or latex.

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Documento generato il 29/11/20 alle ore 17:38:19