@article{Rivera_Orobio_Mejía de Gutiérrez_Cristelo_2020, title={Clayey soil stabilization using alkali-activated cementitious materials}, volume={70}, url={https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2274}, DOI={10.3989/mc.2020.07519}, abstractNote={In this study, a clayey soil classified as A-7-5 according ASTM D3282, was stabilized using alkali-activated cementitious materials (AAC) added to the soil dry in percentages of 20 and 30%. Fly ash (F1, F2) with high unburned carbon content (up to 38.76%), hydrated lime (L) and granulated blast furnace slag were used. Unconfined compressive strength and flexural strength at 28 days of curing and the durability after 12 wetting-drying cycles were evaluated. The results were compared with a soil-cement reference mixture. The soil treated with AAC-F1L showed a volume expansion of 0.51% and volume contraction of -0.57% compared with the 0.59% expansion and -0.68% contraction of the soil-cement reference mixture. Additionally, the mass loss after the wetting and drying cycles is only 3.74% which is slightly lower than the mass loss of the soil stabilized with ordinary Portland cement (OPC) (3.86%) and well below the value specified in Colombian regulations (7%).}, number={337}, journal={Materiales de Construcción}, author={Rivera, J. F. and Orobio, A. and Mejía de Gutiérrez, R. and Cristelo, N.}, year={2020}, month={Mar.}, pages={e211} }