For overcom-ing the disadvantages of these accelerators, a new sodafree WJ-1 cement accelerator has been developed. The paper discussed its physical mechanics properties, indoor test and field test results.

• 为克服上述弊病,研究了一种新型无碱的WJ-1型水泥速凝剂,本文阐述了这种速凝剂的物理力学性能、室内试验与现场试验结果。