Acrylate Crack Injections

Acrylic concretes and mortars are used in applications which require fast curing. Acrylic crack-injecting systems are suitable for wet cracks. Products such as adhesives, asphalt modifiers and floor-care polymers find only a small percentage of applications. 

Acrylic polymer crack injection low viscosity in uncured state high degree of penetration cracks with width less than 0.3 mm wet cracks... 

Water-based acrylic resins offer a suitable means for injection of very fine cracks. The viscosity of such a material is very low which enables a high degree of penetration to be achieved. The resin is suitable for injection of wet cracks in walls, slabs and soffits where the crack widths are less than 0.3 mm (Edwards, 1993a). 

Ground/cracked cast acrylic and PE-based materials are the main purging agents, but others also are commercially available for certain machines and materials. Cast acrylic, which does not melt completely, is suitable for virtually any resin. About one pound for each ounce of injection capacity will be needed (5-10 Ib/in. of screw diameter in an extruder). With extruders, special conditions and preparations are required, which suppliers of the purging compound can recommend (remove dies, screen packs, etc.). 

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