| Popis: |
A broad experimental study had been carried out to characterize the effects of personnel operation and apparatus on cement strength test in this paper. The experimental results illustrated that wipe method of bowl influenced cement strength test result through changing water to cement ratio. In addition, cement strength results compacted by vibrating table were lower than that compacted by jolting apparatus. Also, it found that the installation way of jolting apparatus and the conditions of clamps had a significant effect on cement strength test result. Moreover, the use of ejector would reduce specimens’ damage in the demolding process, which ensured cement strength test accuracy. |
