EFFECT OF SULFONATED MELAMINE-FORMADEHYDERESINS ON THE HYDRATION MECHANISM OF CEMENT

摘要

This paper deals with the effects of sulfonated melamine-formadehyde on the hydration process ofrncement. X-ray, infrared spectrum and bound-water determination indicated that cement granulesrnabsorbed sulfonated melamine-formadehyde molecules. This makes the static potential and repulsionrnbetween the granules increase, resulting in a complete dispersic and hydration. At the same time,rncrystallinity of the hydrated cement and distribution of the crystallites changed, increasing the strengthrnof treated cement.