CAJ | 학술논문

采用正交试验研究了水胶比、硅粉、白水泥和聚合物胶粉掺量等组成参数对复合助剂改性建筑石膏线性膨胀系数的影响，并通过多元回归分析建立了复合助剂改性建筑石膏的线性膨胀系数模型。结果表明，复合助剂改性建筑石膏的线性膨胀系数基本分布在（19.7~22.4）×10-6℃-1之间，小于建筑石膏的线性膨胀系数，温度膨胀性能有一定改善；随着聚合物5010、白水泥、硅粉掺量的增加，石膏的线性膨胀系数逐渐减小；复合助剂改性建筑石膏的线性膨胀系数与组成参数之间存在二次曲线关系，并且游程检验法检验其相关性显著。
채용정교시험연구료수효비、규분、백수니화취합물효분참량등조성삼수대복합조제개성건축석고선성팽창계수적영향，병통과다원회귀분석건립료복합조제개성건축석고적선성팽창계수모형。결과표명，복합조제개성건축석고적선성팽창계수기본분포재（19.7~22.4）×10-6℃-1지간，소우건축석고적선성팽창계수，온도팽창성능유일정개선；수착취합물5010、백수니、규분참량적증가，석고적선성팽창계수축점감소；복합조제개성건축석고적선성팽창계수여조성삼수지간존재이차곡선관계，병차유정검험법검험기상관성현저。
The influence of water-binder ratio, silica fume, white cement and polymer dosage on linear expansion co-efficient of composite admixture modified alcined gypsum(CAMAG) through orthogonal experiment is studied, the calcula-tion model of linear expansion coefficient related to component parameters is establish by multiple regression analysis. The results show that the linear expansion coefficient of CAMAG distributes between (19.7~22.4)×10-6℃-1, which is less than calcined gypsum, temperature expansion performance of CAMAG has a certain improvement. With increasing dosage of polymer 5010, white cement and silica fume, the linear expansion coefficient of gypsum decreases. Quadratic curve rela-tionship can describe the correlation between linear expansion coefficient and component parameters, and correlation is significant by run test.