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粉煤灰水泥混凝土和外掺粉煤灰的水泥混疑土的应用越来越广泛。但是,这种混疑土早期强度低的缺点,影响了其使用效果,限制了其应用范围。因此,寻找克服其缺点、提高其早期强度的途径是有现实意义的。笔者进行的两项试验,均获得了预期的效果。一、选用适宜的早强剂我们选用了NC早强剂(山东产)、硫酸钠复合早强剂(河南巩县产)、三乙醇胺、无水硫酸钠、半水石膏、亚硝酸钠、硫酸铝钾、氯化钠、氯化钾、氯化钙、三氯化铁、铝酸钠溶液、铝氧熟料、氟渣、氟化
The use of fly ash cement concrete and cement admixed with fly ash is more and more widely used. However, the shortcomings of this type of mixed soil, which have low early strength, affect its use effect and limit its scope of application. Therefore, finding a way to overcome its shortcomings and improve its early strength is of practical significance. The two tests conducted by the author achieved the expected results. 1. We used NC early strength agent and selected NC early strength agent (Shandong), sodium sulfate early strength agent (Gong County, Henan Province), triethanolamine, anhydrous sodium sulfate, hemihydrate gypsum, sodium nitrite, and sulfuric acid. Aluminum potassium, sodium chloride, potassium chloride, calcium chloride, ferric chloride, sodium aluminate solution, aluminum oxide clinker, fluoride residue, fluorination