Nomenclature
a (%) percentage of aggregate larger than 80 lm in the aggregate
mixture
b (%) absorption of aggregate (sand included)
C (kg m3) Ciment content
Di (m) average diameter of aggregate of the class i
Dp (mm) diameter characteristic of pores
ei (m) thickness of the layer of the excess paste covering grain i
mG (kg) weight of aggregate in on meter cubic of concrete
k (–) a scaling factor
mi (kg) mass of size Di aggregate grain
Ni (nbr) number of size Di aggregate grains of the class i
N (nbr) number of particle aggregate in concrete
Pt (%) total porosity of concrete
Pp (%) porosity of cement paste
P0 (%) initial porosity of cement paste
Q (%) void content of dry compacted aggregate
Rc (MPa) compressive strength at 28 days
Rt (MPa) tensile strength at 28 days
S (m2) total surface area of the grains aggregate in the mixture
S⁄ (m2) total surface area of the grains average of diameter
di + ei/2
Si (m2) surface of grain size Di
Ssi (m2 kg1) specific surface of aggregates of class i in the
mixture
Vfines (m3) volume of fines in concrete
VG (m3) solid volume of aggregate
VG>80 (m3) volume of a greater than 80 lm aggregate
VP (m3) volume of cement paste
VPC (m3) volume of compact paste
VPE (m3) volume of excess paste
Vi (m3) volume of a size Di grain
Vv (%) volume of void in concrete
Vtotal (m3) total volume of concrete
VW/G (m3) volume of the water retained by the aggregate
W (kg m3) quantity of water in concrete
u ratio between total volume of void and total solid
volume of concrete
x ratio between aggregate volume and total solid volume
of concrete
a degree of hydration of cement
a (1) degree of hydration of cement at infinite time
b (–) factor definite
qdry,compacted (kg m3) dry, compacted bulk density of the
aggregate
qspecify (kg m3) specify bulk density of the aggregate
qC (kg m3) specify density of cement
qW (kg m3) specify density of water
c (–) compactness of aggregate
w/c ratio of the weight of water to the weight of cement