Page 361 - Construction Waterproofing Handbook

REMEDIAL WATERPROOFING 8.21
curing of grout, so that any fins formed may be removed before final grout is set without
affecting waterproofing integrity (Fig. 8.16).
This system is not designed to replace tuck-pointing seriously deteriorated joints. As
with other systems, sample test areas should be completed to analyze effectiveness under
specific job conditions.
Materials should be mixed according to the manufacturer’s recommendations.
Materials are brushed on existing mortar cracks and voids, or applied by jointers to fill
joint recesses completely. Grout materials are available in standard colors or are manufac-
tured to match existing colors.
No priming is required, but joints should be kept damp during application. Materials
should not be applied to frozen substrates or in freezing temperatures.

EPOXY INJECTION

During original construction or structure life-cycling, cracks often develop that allow
water and pollutants to enter a substrate (Fig. 8.17). If this cracking is nonmoving but

FIGURE 8.16 Mass grouting application. (Courtesy of Western Group)