Contents of AMF with more than 10% have bad influences on frost-resistant performance, but it doesnot have bad influences on sulfate corrosion with increment of AMF content.

• 机制砂中的石粉含量超过10%25时对混凝土抗冻性能产生了一定的不利影响，但机制砂中的石粉含量的增加对混凝土的抗硫酸盐侵蚀没有不利影响。