Greetings,
The Texas Department of Transportation has an Item in their standard specifications for "Cleaning and Sweeping Highways" (Item 738,
https://www.txdot.gov/business/resources/txdot-specifications.html). This is probably used most often when the Department contracts for this service, rather than having their own maintenance forces doing this. Sweeping removes dust/dirt which can cause a slick surface in wet conditions, minimizes clogging of drainage inlets, and improves the quality of stormwater runoff.
During construction, sweeping is routinely done to clean the pavement surface before applying a tack coat or interlayer as part of resurfacing. A new surface will not adhere to an existing surface coated with dust/dirt. It is also part of a chip sealing operation, in which a light brooming is done to remove excess material after the stone chips have been rolled before opening to traffic.
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Gary Fitts P.E., M.ASCE
Manager, Market Development
Garden Ridge TX
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Original Message:
Sent: 01-20-2021 01:28 AM
From: Waleed Abdullah
Subject: Pavement Maintenance
I would like to know if sweeping loose aggregates is a standard pavement maintenance works for road and how to find its specifications.
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Waleed Abdullah Ph.D., C.Eng, M.ASCE
ASSOCIATE PROFESSOR
Kuwait University
Safat
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