采用正交法研究各因素对混凝土气密性的影响

The influence of orthogonal method various factors research on concrete air tightness

通过正交试验方法,研究了水胶比、砂率、减水剂掺量及机制砂石粉含量对混凝土气密性的影响,结果表明,混凝土气密性随着水胶比的增加而降低,随着减水剂掺量、机制砂石粉含量、砂率的增大先提高后降低。

Through the orthogonal test method,this paper researched the influence of water / cement ratio,sand ratio,water reducing agent dosage and mechanism sand stone powder content to concrete air tightness,the results showed that with the increase of water / cement ratio,the concrete air tightness decreased,with the increase of water reducing agent dosage,mechanism sand powder content,sand ratio first increased last reduced.