How to demarcate the standard sand density in sand filling method

How to demarcate the standard sand density in sand filling method

Network query: sand filling method
(1) This test method is applicable to determine the density of coarse-grained soil on site. (2) the main instruments and equipment used in this test shall meet the following requirements: 1) density tester: it is composed of sand holding bottle, sand filling funnel and chassis (Fig. 48). The sand filling funnel is 135mm in height and 165mm in diameter, and there is a cylindrical valve with 13mm in diameter at the tail; the volume of sand holding bottle is 4L, The chassis supports the sand filling funnel and the sand filling bottle. 1-chassis; 2-sand filling funnel; 3-threaded joint; 4-sand holding bottle; 5-Valve. 2) balance: weighing 10kg, the minimum graduation value is 5g, weighing 500g, the minimum graduation value is 0.1g. 3) the density of standard sand should be determined according to the following steps: 1) the standard sand should be cleaned, The particle size should be 0.25 ~ 0.50 mm, and the density should be 1.47 ~ 1.61 g / cm3