EXPANDADD

EXPANDADD is an admixture for cementitious grouts where a reduced water / cement ratio and positive expansion is required. Applications include bed grouting, duct grouting, non-shrink infilling and jointing. EXPANADD is a free flowing powder for addition to neat cement mixes.  It plasticises the mix, allowing for substantial reduction in water without affecting the fluidity, thus improving the strength and impermeability of the grout.  During the setting period of the grout, it produces controlled expansion to compensate the normal drying shrinkage of cement.  This ensures complete filling of voids and prevents formation of porous sections.  It also imparts surface active properties and controlled volume increase during reaction; thus even the smallest cracks and pores can be impregnated.