HomeMy WebLinkAboutReport #2 7-6-87 Slurry SealDATE: dUNE 30, 1987
TO:
FROM:
SUBJECT:
WILLIAINH. HUSTON, CITY I~NAGER
PUBLIC WORKS DEPARTMENT/ENGINEERING DIVISION
REPORT ON SLURRY SEAL PRO~IECT
We have received a number of calls from citizens regarding the slurry seal
project. We understand that some City Councilmembers have also received calls.
The inquiries received here primarily relate to the damage to the surface caused
by turning wheels.
Turning the front wheels of a stopped vehicle with power steering will cause some
damage to the surface. This will happen on any new asphalt surface including new
paving or resurfacing. It also happened to previous slurry seal projects but
wasn't so noticeable because the slurry seal film was quite thin. It is thicker
this year so the gouges are more visible. If the car is moving when the wheels
turn, the surface will not be damaged.,
The slurry seal mix has slightly larger rock than those used in previous years.
The new seal is not as smooth as in the past but it provides better surface
resistance to skidding. It also provides longer service and therefore allows an
increase in the cycle between applications from about five years to about seven
years. There will be some shedding of tiny rocks for a period of about 6-8 weeks
after the surface is treated.
Slurry seals replace asphalt and fine aggregates lost from the pavement surface
because of oxidation and wear. They extend the life of streets and help prevent
costly reconstruction which may result when preventive maintenance programs are
not in effect.
I have spot checked many locations of our project and found the quality of work by
the City's contractor to be very good and more than consistent with standards of
the industry.
onald E. Wolfor~Y/
Engineering Ser~/fces Manager