The test result of change laws of weight indicates that, to the ordinary concrete under sulfate attack, the rate of change is quickly.

• 各种混凝土的质量变化规律表明,对于普通混凝土,其受到侵蚀后质量变化幅度较大,前期增长快,后期衰减也快,但在试验周期内较初始质量没有损失;