Concrete Floor & Wall Joint Sealants
Choosing the right materials are essential to maintain the
integrity of most modern buildings.
Isolation Joints:
Isolation joints have one very simple purpose, they completely
isolate the slab from something else. That something else can be a
wall or a column or a drain pipe. Walls and columns, which are on
their own footings that are deeper than the slab subgrade, are not
going to move the same way a slab does as it shrinks or expands
from drying or temperature changes or as the subgrade compresses a
little.
Contraction Joints:
Both isolation and construction joints are formed before the
concrete is poured; contraction joints, or control joints are
placed in the fresh concrete before it has a chance to create its
own joints, also known as cracks. What a contraction joint really
is in the end is a crack in the slab that we force to follow a
line of our own choosing. Contractors create a weakened line
across the slab and let nature take its course. When the slab does
crack, that's called joint activation.
Construction Joints:
Construction joints are formed using some sort
of bulkhead, made of wood, steel, plastic, or
precast concrete. These bulkheads are often
used as screed rails during placement and
finishing of the slab. Construction joints
should be worked into the overall joint plan,
where they can also function as contraction
joints. A construction joint should also be
used in cases of equipment breakdown, an
unexpected shortage of materials, or bad
weather, although the joint should still be
worked into the jointing pattern, placed where
a contraction joint was planned. If that's not
possible, the odd section may later have to be
removed.
What Sealant Materials To
Use For Joints
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Scope of Work
Swiftseal cover all aspects of Sealant
Application
