The influence of complex additives based on calcined clays and carbonate fillers on hydration products composition of blended cement stone

One of the most effective and recognizable way to solve energy resource consumption problems in cement industry is development blended Portland with different combinations mineral additives. The complex additives based on combination calcined clays limestone one promising directions. aim this work was study influence kaolinitic clay kaolinite content 80 % calcite 99 stone hydration products at age 28 days. Using X-ray diffraction differential scanning calorimetry composition studied. It established that introduction 20 additive leads a significant decrease portlandite content, increase number new growths form low-calcium hydrosilicates calcium hidrocarboalumosilicates, stabilization ettringiteand hydrocarbosilicates amorphous phase, significantly increases compressive strength. This effect amplified due additional alumina provided by reaction.