This study evaluates the pozzolanicity of Nyiragongo volcano lava flows in Congo by an indirect method using mortars with different rock powder proportions. The clinker used is a locally produced alite clinker, whose chemical and mineralogical composition was determined XRF, Bogue Taylor formulas. were collected from 2002, 2010 2021 eruption sites, characterized CIPW normative mineralogy geomec...

Clinker bricks go into excessive temperatures during the process, are waste in brick making, and tend to be unusable, but it can used as an alternative material coarse aggregate concrete mixtures. This research is about clinker which no-fines with a water-cement ratio 0.45 volume of 1:3 for 4 sample variations at different ages where mixture four 0%, 25%, 50%, 100% will tested age 7 days, 14 28...

The inclusion of high specific surface materials such as calcined clays in cementitious systems enhances the hydration clinker products at very early ages, but it may also increase water demand; thus, pursuit a flowing concrete demand an dosage superplasticizers. grinding regime can have major influence on properties system and could help mitigate problem demand. This paper discusses impact alt...