Schmidt, W., Tchetgnia Ngassam, I.L., Olonade, K.A., Mbugua, R.N. and Kühne, H.-C. 2019. Plant based chemical admixtures – potentials and effects on the performance of cementitious materials. RILEM Technical Letters. 3, (Mar. 2019), 124–128. DOI:https://doi.org/10.21809/rilemtechlett.2018.83.