Temperature-controllable salt leaching-adding soil test device and method for testing soil sample by using same

Abstract

The invention relates to a temperature-controllable salt leaching-adding soil test device and a method for testing a soil sample by using the same. The invention mainly aims to solve the technical problem in a current quantitative loess research method that great error exists between test data and an engineering entity. The technical scheme adopted by the invention is characterized in that the temperature-controllable salt leaching-adding soil test device consists of a soil sample barrel, a temperature control system, a salt leaching-adding system, a pressuring device and a data acquisition system. The method for testing the soil sample by using the device comprises the following steps: 1) the moisture content and the soluble salt content of the soil sample are tested; 2) the soil sample is charged into the soil sample barrel; 3) weight is applied to the pressuring plate; 4) the soil sample is heated; 5) a salt solution or water is added to the soil sample; 6), 7) and 8) the temperature is raised, lowered and then is raised, and the deformation situation of the soil sample is recorded; 9) distilled water is added to the soil sample with a water (salt) supplying container, and the deformation situation of the soil sample is recorded; 10) discharged water is collected with a collection container; the conductivity of the discharged water is tested; and the deformation situation of the soil sample is recorded.

Description

technical field [0001] The invention belongs to the technical field of geotechnical testing, and specifically relates to a temperature-controllable washing-salt-supplementing soil test device and a method for testing soil samples, especially capable of dynamically observing soil moisture, salinity, Dynamic changes in temperature and deformation. Background technique [0002] About 65% of the highway mileage in my country's loess distribution area is distributed in the collapsible loess area. Due to the limited level of early loess roadbed treatment technology, coupled with the extreme climate (such as heavy rainfall) caused by the greenhouse effect and the artificial development of agriculture Factors (such as seasonal irrigation and the intrusion of external salt) have changed the operating environment along the road, making the roadbed always in the operating state of strong increase and decrease of humidity and washing and replenishing salt cycles, which eventually lead to...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problem that the existing method for quantitatively studying loess has large deviations between the test data and the engineering entity, and to provide a method that can dynamically observe soil moisture, salinity, and temperature under the influence of the coupling environment of temperature and washing and replenishing salt. Temperature-controllable washing-salt-supplementing soil test device and method for testing soil samples

Images