Abstract: During the red clay slaking, the weight increase during the water absorption will affect the accurate measurement the soil slaking property. In order to study the effect of water absorption and weight increase on the slaking of the red clay, water absorption tests were conducted under different water temperatures. The experimental results show that the water absorption will affect the slaking measurement results, and the samples with low water content will have negative slaking. The water absorption will result in a low average slaking rate. The water absorption of the red clay sample is affected by the moisture content of the soil and the water temperature. The water absorption rate and the total water absorption increase with the increase of temperature; The water absorption rate and the total water absorption increase with the decrease of soil moisture content; When the moisture content of the sample reaches 18%, the influence of water absorption on the slaking of the red clay could not be measured.

Key words: Red Clay, Water Absorption, Slaking Quantity