粉煤灰、磷渣和膨胀剂对混凝土性能的影响

Ash,phosphorus slag and expansive agent on the properties of concrete

开展试验研究了粉煤灰、磷渣、膨胀剂NF-M2和轻烧MgO对混凝土力学性能、变形性能和耐久性能的影响。结果表明:粉煤灰、磷渣和膨胀剂将不同程度降低混凝土强度和极限拉伸值,掺粉煤灰和磷渣混凝土弹性模量略有降低,掺膨胀剂混凝土弹性模量降幅显著,复掺粉煤灰和磷渣混凝土的干缩率介于两者单掺之间,粉煤灰和磷渣能一定程度上改善混凝土的后期抗渗、抗冻性能,而膨胀剂NF-M2和MgO影响不大。

Pilot study of fly ash,slag,expansion agent NF-M2 and the light burned MgO on the concrete mechanical properties,deformation and durability.The results showed that Ash,phosphorus slag and expansion agent will be reduced to varying degrees the value of concrete strength and ultimate tensile.Fly ash and phosphorous slag concrete elastic modulus decreased slightly.Elastic modulus of concrete mixed with expansive agent significantly decrease.Complex-doped of fly ash and slag concrete shrinkage rate of phosphorus ranged between two single-doped,but the expansive agent NF-M2 and MgO has little effect.