道路基层贫混凝土抗冻性能的研究

Frost resisitance of roadbase lean concrete

为研究贫混凝土的抗冻性能,通过室内试验,分析了几种贫混凝土的抗冻性能及其规律。试验表明,各种贫混凝土的抗冻性能优于二灰碎石和水泥稳定碎石;贫混凝土中掺原状湿排灰时,其抗冻性能变差,而掺优质粉煤灰贫混凝土的抗冻性能与不掺粉煤灰的接近。

The lab tests on the resistance of several kinds of lean concrete show that the frost resistance property of lean concrete is superior to lime-fly ash treated broken stone and cement stabilized macadam; mixing fly ash with lean concrete makes the frost resistance worse; and mixing high quality fly ash with lean concrete makes the frost resistance close to that of lean concrete without fly ash.