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Titre du document / Document title

Effect of coarse aggregate on the workability of sandcrete

Auteur(s) / Author(s)

DENIS Alain (1) ; ATTAR Ahmed (1) ; BREYSSE Denys (1) ; CHAUVIN Jean Jacques (2) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Centre de Développement des Géosciences Appliquées, C.D.G.A., Université Bordeaux I, Avenue des Facultés, Bât. 18, 33405 Talence, Bordeaux, FRANCE
(2) Laboratoire régional des Ponts et Chaussées, L.R.P.C., 24 rue Carton, BP 59, 33019 Bordeaux, FRANCE

Résumé / Abstract

The results of an experimental study of the effect of a limited quantity of coarse aggregate on the workability of sandcrete are presented. This study has been conceived within an experimental design framework. Several parameters have been analyzed: aggregate content, aggregate size, aggregate shape and matrix strength (20- and 35-MPa matrices are cast). Statistical analysis shows that, for the 20-MPa matrix, aggregate content [gravel/sand ratio (G/S) < 0.7] and aggregate size appear to be the most influent parameters. While for the 35-MPa matrix, only the aggregate concentration has a statistically significant effect. These results show that the workability can be divided by 4 as the aggregate content increases up to G/S=0.6. Thus, sandcrete with a small coarse aggregate content cannot be considered as a classical sandcrete whose mechanical properties, mainly compressive strength, are enhanced by an amount of gravel. Developing general use of sandcrete with coarse aggregate requires building specific mix design to respect both compressive strength and workability.

Revue / Journal Title

Cement and concrete research    ISSN  0008-8846   CODEN CCNRAI 

Source / Source

2002, vol. 32, no5, pp. 701-706 (16 ref.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Kidlington, ROYAUME-UNI  (1971) (Revue)

Mots-clés anglais / English Keywords

Structure composition relationship

;

Slump test

;

Density

;

Compressive strength

;

Experimental study

;

Concrete workability

;

Coarse aggregate

;

Shotcrete

;

Concrete mix design

;

Mots-clés français / French Keywords

Relation composition structure

;

Essai affaissement

;

Densité

;

Résistance compression

;

Etude expérimentale

;

Ouvrabilité béton

;

Gros granulat

;

Béton projeté

;

Formulation béton

;

Mots-clés espagnols / Spanish Keywords

Relación composición estructura

;

Prueba trabajabilidad hormigón

;

Densidad

;

Resistencia compresión

;

Estudio experimental

;

Trabajabilidad hormigón

;

Granulado grueso

;

Hormigón proyectado a presión

;

Formulación hormigón

;

Localisation / Location

INIST-CNRS, Cote INIST : 15266, 35400010884022.0040

Nº notice refdoc (ud4) : 13776632



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