摘要
为了研究大掺量引气剂对碾压混凝土抗冻性的影响,本文通过对混凝土的抗冻、抗渗和力学等性能的研究试验,分别研究了引气剂掺量、粉煤灰掺量和水胶比的变化对混凝土抗冻性能的影响,并在上述条件下研究了其对强度和抗渗等性能的影响。结果证明,在不降低混凝土强度和抗渗要求的情况下,大掺量引气剂和降低水胶比能显著提高碾压混凝土在高寒干燥地区的抗冻耐久性。
This paper deals with internal frost resistance of RCC in the frost and dry area. The frost resistance in the frosty and dry area is in the low level because it is hard to entrainthe air in RCC. Influence on internal frost resistance, strength and perme ability of RCC in different air entrainments, fly ash contents and waterbinder ratios are studied. It showes the results that high air entrainment and the low waterbinder ratos can increase the frost resistance.
出处
《煤炭技术》
CAS
2006年第8期94-96,共3页
Coal Technology
关键词
含气量
抗冻性
引据剂
粉煤灰掺量
水胶比
抗渗性
high air content
frost resistance
airentraining agents
content of fly ash
waterbinder rate
perme ability
