A Research on Preparation and Performance of Volcanogenic Sand Concrete from the Philippines.

The river sand in the Santo Tomas River area of the Philippines is a kind of volcanogenic sand. The sand is fine sand with a fineness modulus of 2.2, an apparent density of 2380 kg/m, a bulk density of 1320 kg/m, a mud content of 6.

Properties of Slurry Shield Tunnel Sand and Its Application in Large Flow Concrete.

The amount of Slurry shield tunnel slag (SSTS) from the Beijing East Sixth Ring Road renovation project is about 3 million m, and it is mainly fine and silt sand. In order to realize its resource utilization, the properties of SSTS and the performance of concrete with strength grades from C30-C60, which used the mixed sand compound with SSTS and Coarse Manufactured Sand (CMS) as a fine aggregate, were investigated. The results showed that SSTS' fineness modulus is 1.