CMP 124 Exam 2 Questions and Answers All Correct
4 Functions of Mortar - Answer--bind
-seal: moisure + air
-compensate: size variation
-esthetic: color + shadow lines
Make up of Mortar - Answer--portland cement + lime
-sand (clean washed) (well graded)
-water (clean)
What do we use m...
Mortar color - Answer-- depends on type of mortar
- time of tooling(stricking)
- pigments added
- aggregate color
Mortar mixing - Answer-hand shovel
mortar = 1
, sand = 3
handeling/ placing mortar - Answer-retempering: adding more water
*can only do with mortar not concrete
typical mortar joint size - Answer-3/8''
admixtures to mortar - Answer--calcium chloride: caution is using steel use liquid not
powder
-cold weather options: hot sand
*caution with hot water... flash set
moisture proofing (mortar) - Answer-parging: back plaster, tar, mastic
plywood construction - Answer--thin sheets laminated
-adhesives: waterproof or water resistant
-odd number of piles
-construction grade plywood = structural
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