This study aims at elucidating the visco-elastic behavior of hardening blended cement pastes, focusing on uniaxial basic compressive creep tests at early loading ages. Cement pastes with Portland cement only or blended with quartz or fly ash (both at a substitution level of 49 % by volume of the total solids) were subjected to different loading scenarios.

The results show that both blended systems had higher creep than pure cement paste at early ages and that the creep compliance of the blended system with fly ash was higher than with quartz. While this difference is in part due to the restraining effect of the elastic phases, the amount of C-S-H and the porosity, dissolution creep may also play a role. A numerical algorithm with generalized Kelvin-Voigt chain model was developed and it was capable of predicting with good accuracy the strain evolution of the blended cementitious materials at early ages.

这项研究旨在阐明硬化掺和水泥浆的粘弹性行为，重点是在早期加载年龄下的单轴基本压缩蠕变试验。仅含波特兰水泥或与石英或粉煤灰共混的水泥浆（二者的替代含量均占总固体的49％）经受了不同的加载方案。

结果表明，两种混合体系的蠕变都比纯水泥浆高，而粉煤灰的混合体系的蠕变顺应性高于石英。尽管这种差异部分是由于弹性相的抑制作用，CSH的量和孔隙率，溶解蠕变所致。建立了具有广义开尔文-沃伊格链模型的数值算法，该算法能够很好地预测混合胶凝材料在早期的应变演化。