The results of a laboratory testing program carried out to investigate the effect of coarse aggregate types on the elastic modulus of typical pavement concretes are presented. The elastic modulus was determined in both flexure and compression using static and dynamic means. Three different mixes, made using three different aggregates, were compared. The water-cement ratio was kept at 0.53 throughout the test program. The results showed that within the tested range, the aggregate type significantly affected the studied properties of concrete. Calera aggregate (a dense limestone) with its rough-textured surface and angular shape produced a concrete with higher strength and stiffness than those of concretes made with Brooksville aggregate (a porous limestone) and river gravel. In addition, the measured dynamic modulus in compression was significantly different from that in flexure. Also, in flexure, the dynamic modulus was higher than the static modulus by an average of 23 percent, whereas in compression, th...
[1]
S. Popovics,et al.
Estimation of the modulus of elasticity of concrete-like composite materials
,
1970
.
[2]
T. J. Hirsch,et al.
Modulus of Elasticity iof Concrete Affected by Elastic Moduli of Cement Paste Matrix and Aggregate
,
1962
.
[3]
R. H. Elvery,et al.
The effect of compressive stress on the dynamic modulus of concrete
,
1957
.
[4]
J. C. Simmons,et al.
Poisson's ratio of concrete: a comparison of dynamic and static measurements
,
1955
.
[5]
R. Jones.
The effect of frequency on the dynamic modulus and damping coefficient of concrete
,
1957
.
[6]
R. Jones,et al.
The effect of coarse aggregate on the mode of failure of concrete in compression and flexure
,
1957
.
[7]
P. K. Mehta.
Concrete: Structure, Properties, and Materials
,
1992
.