磷渣掺合料对水泥混凝土性能的影响及机理探讨

以贵州磷渣作为研究对象,对掺入磷渣掺合料的混凝土性能进行了测试,并通过X-ray衍射和扫描电镜观察对其机理进行了探讨,试验研究表明磷渣掺合料的混凝土的早期强度较低,而后期强度得到了有效的提高,并且可以改善混凝土的抗冻和抗渗性能;磷渣掺合料对混凝土的早期收缩影响较大,但随着龄期的增加,掺入磷渣掺合料的混凝土收缩率基本接近于基准混凝土,因此磷渣是一种较好混凝土掺合料.

Study of effect of phosphorous slag on cement concrete performance and mechanism researching

The experiment mainly research into phosphorous slag of Guizhou, and have carried out a test about performance of concrete which is added phosphorus slag admixture.With X-ray diffraction and SEM, analysesits mechanism.The experiment tests that phosphorus slag admixture greatly effect the early stage strength of concrete, the later stage strength has got effective rise, and can improve ffeezeproof and impermeability property.Although phosphorous slag admixture is greatly effect on rate of shrinkage of concrete at early stage,by stage increasing,the rate of shrinkage approaches criterion concrete basically.Therefore,phosphorous slag is a good kind of admixture for concrete.