Behaviour of Calcareous (Calcium Carbonate) Sands with Increasing Particle Crushing Under Monotonous Loading

Limestone deposits containing more than 50% calcium carbonate by weight are found mainly between latitudes 30^oS and 30^oN in coastal areas such as Florida, India, Puerto Rico and Australia. Many studies have focused on the behavior of sediments and the destruction of particles exposed to them. In marine construction, measured power in limestone was reported to be about 20% lower than predicted. Therefore, it is necessary to study the loading behavior of the limestone sands with the post-construction scenario. Limestone sands from Puerto Rico and Western Australia were chosen as materials for this study. The main objective is to study the static charge behavior in the lime sand, since it increases the degree of particle crushing. To do this, the physical properties are first determined. It has been established that lime sand has a high carbonate content, a high specific gravity, and a porous particle structure. In order to study the static stress behavior of unground lime sand, triaxial subwash tests are performed at various limiting pressures. Lime sand samples prepared with different particle contents are then tested with triaxial unground tests. Different particle contents are obtained with compressive loading (one-dimensional consolidation test) and transverse loading (triaxial consolidated drainage test and TruePath test). The impact of the loading mechanism on particle size reduction is also evaluated. The results of the Puerto Rico and Western Australia sand tests are analyzed and compared with each other.