夏季施工水泥中石膏最佳掺量的确定

摘要

Under the condition of high temperature in summer , the influence of gypsum content on the strength and setting time of the composite portland cement was studied during the cement construction , and the best dosage of gypsum in cement was determined .It showed that the mixing amount of gypsum within a certain range ,could significantly extend the setting time ,and improve the compressive strength of cement in 3 days and 28 days.On the other hand ,the setting time and strength of the cement would reduce.%通过研究在夏季温度较高条件下进行水泥施工时石膏掺量对复合硅酸盐水泥的强度及凝结时间的影响，找出石膏中三氧化硫的最佳掺量。试验结果表明：石膏掺量在一定范围内，既可显著延长水泥凝结时间，又可提高水泥3 d及28 d抗压强度；反之，水泥的凝结时间和强度会重新降低。