Browsing Research Articles [MEWES] by Author "Mboya, Hieronimi"
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Influence of scoria and pumice on key performance indicators of Portland cement concrete
Mboya, Hieronimi; Njau, Karoli; Mrema, Alex; King'ondu, Cecil (Elsevier Ltd, 2019-02-10)Cement industries have a huge CO2 signature that can be reduced in an effort to mitigate climate change via precise cement substitution with supplementary cementing materials (SCMs). The substituting materials and their ... -
Measurement of Pozzolanic Activity Index of Scoria, Pumice, and Rice Husk Ash as Potential Supplementary Cementitious Materials for Portland Cement
Mboya, Hieronimi; King’ondu, Cecil; Njau, Karoli; Mrema, Alex (Hindawi, 2017-08-06)This work investigated the properties of scoria and pumice as supplementary cementitious materials (SCMs) for Portland cement and compared to those of rice husk ash (RHA). X-ray fluorescence, X-ray diffraction, and ...