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我公司继七八、七九两年试验延庆长城牌减水剂掺入混凝土,并实际应用于混凝土路面工程,取得显著效用之后,八○年一面在市政工程不同构筑物混凝土中做扩大试用的同时,还着重针对这种减水剂掺用后混凝土早期强度偏低,蒸养混凝土不尽适应冬季蓄热(草帘复盖)法养护强度发展缓慢等问题做了复合硫酸钠掺入混凝土的多种情况试验取得了可行的成果。
Our company succeeded in experimenting with Yanqing Great Wall brand water-reducing admixture in concrete for seven or eight years in 1979 and actually used it in concrete pavement construction. After obtaining remarkable effect, in 1980, while expanding trial in different structures of municipal engineering , But also focused on the admixture of this superplasticizer early strength of concrete is low, steam curing concrete does not adapt to the winter heat storage (straw curtain covered) method of curing strength slow development of the composite sodium sulfate mixed with concrete and more The situation test has yielded feasible results.