2.3
WATER
Potable and free from injurious amounts of oil, alkalis, acids, organic
matter, and other deleterious substances.
2.4
METALLIC WATERPROOFING COMPOUND
Clean, commercial, pulverized cast iron mixed in dust-confining container
with chemical oxidizing agent such as sodium peroxide, potassium peroxide,
or ammonium chloride.
2.4.1
Pulverized Cast Iron
85 percent minimum by weight of metallic iron of magnetic portion.
Chemical oxidizing agent content shall be a minimum of 3 percent and a
maximum of 5 percent by weight of compound. Presence of dirt, paraffin,
bitumen, or other foreign substances in excess of one percent by weight of
waterproofing compound will be cause for rejection.
2.4.2
Iron Oxide Content
Do not exceed 5 percent by weight of magnetic iron. The magnetic portion
of iron shall not contain more than 0.05 percent by weight of oil.
2.4.3
Magnetic Iron Particles
Graded as follows:
Sieve size
Percent passing
No. 20 screen
100
No. 35 screen
95 to 100
No. 40 screen
90 to 100
No. 60 screen
65 to 100
No. 100 screen
45 to 70
No. 200 screen
10 to 25
2.5
CALKING
Polyurethane foam sealant.
PART 3
EXECUTION
3.1
SURFACE CONDITION
Examine all surfaces to be waterproofed to ensure that concrete has
properly cured, all shrinkage has occurred, laitance has been removed,
cracks and honeycombs have been cut out and filled, and surfaces have been
roughened to provide bond for waterproofing material. Correct all defects
that will adversely affect proper completion of waterproofing.
SECTION 07161
Page 7
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