Experimental Study on the Test Method of the Dry Density for the Shield Concrete

Abstract

This paper describes the study on the appropriate test method of the dry density for the shielding concrete. A series of experiments was conducted based on the Latin square method considering cement type and test condition variability. The following conclusions can be drawn.1. The drying convergence time of a concrete specimen depends on the pre-curing period, the shape of the specimen and the drying temperature. The longer pre-curing period, larger specimen size and lower drying temperature make the drying convergence time longer.2. Although there are two judgment criteria for oven-dry condition of the concrete specimen and these two criteria influence the drying convergence time, these two criteria do not influence the dry density of the concrete specimen.