What are the benefits of
pipeline rehabilitation using Cement Lining?
80 % over the cost of replacement
Extend the life of the pipeline for another 50
STOP corrosion now!
Neutralize any adverse effects of the pipeline on the
Increase flow from 15
How long have Cement Lined
Pipes been used?
Beginning in the 1800’s,
cement mortar was found to have excellent anti-corrosive
properties for use in water lines. At first, man entry size
pipelines were rehabilitated using hand-lining techniques.
Eventually, lining machines were developed which allowed for
a consistent lining thickness on the pipe wall for both man
entry and small diameter pipe. Since then cement mortar
lining has been used around the world for new pipe and to
rehabilitate old lines.
How does the cement lining
protect the pipe?
The internal cement mortar lining provides protection to the
pipeline in two ways. First, it is a
pipe within a steel pipe”,
and second, by creating a
between the cement lining and the pipe wall, neutralizes the
corrosive properties of the liquid medium and blocks
corrosion of the pipe wall. In effect, the
serves as a second layer of defense against internal
corrosion. Unlike other types of internal linings, which
allow pipe corrosion to spread down the line once they are
chipped or damaged in any spot, the cement lining prevents
corrosion from spreading along the pipe wall.
What is Autogenous
Simply stated, autogenous healing is the ability of cement
to heal itself. In the presence of moisture, cement
extrudes calcium hydroxide which, upon exposure to the
atmosphere, is converted to calcium carbonate (limestone)
which seals the crack. This is the same phenomenon that
happens when a broken bone is mended. Autogenous healing of
cement lined pipe is common when the buried pipe is in the
presence of moisture, either on the soil side or inside of
the pipe itself. These cracks, when healed autogenously,
are stronger than the original cement lining. Evidence of
autogenous healing is a whitish substance forming along the
Conclusion: Even though your pipeline has exfiltration
problems, it will stop after it is cement lined!
What is the
Since there is no chemical bond between steel and cement,
the lining process relies on the
to hold the cement on the upper portions of the pipe prior
Once cured, this creates
cement pipe within a steel pipe”.
types of finishes are available?
a trowel arm smoothes the lining as the machine exits
a sprayed on finish, which looks like the surface of an
Does the lining have any
A pressure test was conducted on a length of
riveted steel pipe, 48" in diameter and with 1/2" pipe wall
thickness. The test section was perforated with numerous
test holes from 1" to 6-1/4" in diameter. The holes were
fitted with blanks for application of cement-mortar lining,
which was applied in a thickness graduating from 1/4" to 1".