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采用 42 5普通硅酸盐水泥和宁波北仑电厂 级粉煤灰 ,SA- 1型高效减水、激发剂 ,开展了粉煤灰掺量为总胶凝材料量 5 0 %的高掺量粉煤灰混凝土的室内试验研究 ,并将研究成果应用于宁波某二级公路路面工程。结果表明 :设计的高掺量粉煤灰混凝土完全满足 C30及抗折强度≥ 4.5 MPa的原路面混凝土设计要求 ,且其 2 8d龄期及其以后的抗折强度、抗压强度、抗磨蚀性能均不低于全水泥普通对比混凝土。
425 ordinary Portland cement and Ningbo Beilun power plant-level fly ash, SA-1-type superplasticizer, stimulant, launched a fly ash content of 50% of the total amount of cementitious material with high volume of pulverized coal Gray concrete indoor experimental study, and the research results applied to a secondary road in Ningbo Pavement Engineering. The results show that the designed high volume fly ash concrete fully meets the design requirements of the original pavement concrete with C30 and flexural strength ≥ 4.5 MPa, and the flexural strength, compressive strength and abrasion resistance at 28 days and beyond Not less than the whole concrete ordinary contrast.