The tests on sexpansion of clay after moisture absorption and its performance have been discussed, The cause of body moisture shatter and shed shatter has been analyzed through test on expansion of clay and body after moisture absorption.

• 讨论了粘土和坯料吸湿膨胀试验方法,并通过对粘土、料吸湿膨胀试验,分析了坯体水分炸裂、伞的原因。