美国外加剂公司的G.S.Bobrowski,从节约能源和资源出发,探讨了混凝土使用高效减水剂和粉煤灰的节能效果。他以混凝土的水泥用量作为评定能耗的主要依据。水泥的单位能耗,因制造方法不同,波动在1.0×10~6至2.5×10~6千卡/吨范围内。一般取平均值1.57×10~6千卡/吨。粉煤灰和高效减水剂的能耗忽略不计。以美国芝加哥地区常用的3000磅/时~2(210公斤/厘米~2)混凝土作为对比基准。这种混凝土的配合比(水泥:砂:碎石:水)为 G.S.Bobrowski, a US admixture company, explored the energy-saving effect of using concrete superplasticizers and fly ash from the perspective of energy conservation and resources. He used concrete cement as the main basis for assessing energy consumption. The unit energy consumption of cement fluctuates in the range of 1.0 × 10 ~ 6 to 2.5 × 10 ~ 6 kcal/ton due to different manufacturing methods. Generally average 1.57 × 10 ~ 6 kcal / ton. The energy consumption of fly ash and superplasticizers is negligible. Taking the 3000 pounds/hour~2 (210 kg/cm~2) concrete commonly used in the Chicago area as a benchmark. The mix ratio of this concrete (cement: sand: gravel: water) is