@article{Witzleben2020, author = {Steffen Thomas Witzleben}, title = {Acceleration of Portland cement with lithium, sodium and potassium silicates and hydroxides}, series = {Materials Chemistry and Physics}, volume = {243}, publisher = {Elsevier}, issn = {0254-0584}, doi = {10.1016/j.matchemphys.2019.122608}, year = {2020}, language = {en} }