Page 333 - Masonry and Concrete

Masonry Garden Walls

332 CHAPTER NINE

a) SPECIAL PILASTER BLOCK
VERTICAL
REINFORCING
BAR GROUTED
INTO BLOCK
CORE

ALTERNATING
COURSES ALTERNATING
COURSES

b) STANDARD UNITS IN PROJECTED, c) INTEGRAL PILASTER IN
INTERLOCKING BOND PATTERN REINFORCED CORE

FIGURE 9-21
CMU pilasters (from Beall, Christine, Masonry Design and Detailing, 4th edition, McGraw-
Hill, New York).

supply a chemically compatible admixture for use in the mortar. When
treated units are not used, a clear water-repellent coating may be field
applied, but the wall will need to be recoated every few years to main-
tain its water repellency. Neither integral nor surface-applied water
repellents protect against water penetration through shrinkage cracks
or joint separations.
Gray block can be painted with any type of breathable coating such
as acrylic latex house paint. The masonry should be allowed to cure for
at least 30 days before it is painted. Portland cement plaster or stucco

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