X In order to study the influence of dry density

water content and soluble salt content on the thermal deterioration of earthen monuments

Hot Disk heat constant analyzer is used to test the thermal parameters of soils from different earthen monument sites such as Liangzhu

Tunguska Brazil and Jiaohe. Meanwhile

Tunguska Brazil soil is concentrated with different concentrations of NaCl

then the thermal conductivity coefficient is measured to analyze the influence of salt content. The results show that the thermal conductivity coefficients of three types of soils increase linearly with increasing water content and dry density. The thermal diffusion coefficient and specific heat volume are also increased with increasing water content and dry density. The thermal parameters of earthen monuments soils are found to be correlated positively to the SiO2 content in soil. For the above-mentioned three sites soils

their thermal parameters are different under same conditions; the Liangzhu soil is the greatest; Tunguska Brazil soil is second and Jiaohe is the least. In addition

concentrated NaCl increases the thermal conductivity of soil.