CAJ | 학술논문

用电石渣对磷石膏进行改性处理作为水泥缓凝剂，研究其对实验室所配P·C32.5R复合水泥性能的影响。结果表明，电石渣改性磷石膏掺入4%、外掺1%电石渣时，该水泥初凝时间为181 min，终凝时间为241 min；28 d抗折强度为7.5 MPa，28 d抗压强度为39.9 MPa，满足P·C32.5R水泥的性能指标；电石渣中除钙质外的少量杂质对水泥性能无不良影响。
용전석사대린석고진행개성처리작위수니완응제，연구기대실험실소배P·C32.5R복합수니성능적영향。결과표명，전석사개성린석고참입4%、외참1%전석사시，해수니초응시간위181 min，종응시간위241 min；28 d항절강도위7.5 MPa，28 d항압강도위39.9 MPa，만족P·C32.5R수니적성능지표；전석사중제개질외적소량잡질대수니성능무불량영향。
The phosphogypsum was modiifed with acetylene sludge and was made as the cement retarder. The inlfuence of the phosphogypsum modified with the acetylene sludge on the properties of the P·C32.5R cement was studied. The studies showed that, when adding 4% modified phosphogypsum and 1%cetylene sludge into the cement, its initial setting time was 181 min and ifnal setting time was 241 min, 28 d lfexural strength was 7.5 MPa and 28 d compressive strength was 39.9 MPa, which fully met the performance indicators of the P·C32.5R cement. Besides, the impurities in the modiifer had no bad inlfuence on the property of P·C32.5R.