Abstract—This paper presents mesoscale analysis on mechanical properties of concrete that has different size by two dimensional Rigid Body Spring Model (RBSM). The specimens used in this analysis are cylinders with diameter /height (mm): 50/50, 50/100, 50/150, 50/200, 100/100, 100/200, 100/300, 100/400, 150/150, 150/300, 150/450, and 150/600. Nominal maximum sizes of aggregate were 9.5 mm, 25 mm, and 30 mm with grain size distribution according to JSCE Standard. The aggregate distributed randomly into the analyzed models. The loading conducted with deformation control with the increment of 0.005 mm for compression analysis and 0.0005 mm for tension analysis. Compressive strength, tensile strength and elastic modulus of all specimens with the same of h/d, decrease with the increasing of nominal maximum size of aggregate. For all specimens with the same nominal maximum size of aggregate, compressive strength, tensile strength and elastic modulus decrease with increasing of concrete slenderness (h/d).
 

Index Terms—size effect, mesoscale, rigid body spring method, maximum aggregate size, specimen slenderness, mechanical properties of concrete

Cite: Muttaqin Hasan and Sri Indah Setiyaningsih, "Mesoscale Analysis of Size Effect on Mechanical Properties of Concrete," International Journal of Structural and Civil Engineering Research, Vol. 4, No. 3, pp. 265-270, August 2015. doi: 10.18178/ijscer.4.3.265-270