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Title: Summary Of Pavement-Restoration Questionnaire
Author(s): [Not Available]
Source: American Gas Association 1988
Year Published: 1988
Abstract: Minimum Openings (1 ft xl ft) Ten companies report that they perform no C & M operations in minimum openings. Most companies backfill with excavated material if it is judged to be suitable. Three companies report that they backfill with other than excavated materials 80 to 90 percent of the time. The use of soil stabilizers is minimal: Four companies are testing. One company has tested and discontinued use. The hand-held air/hydraulic tamper (pogo stick) is used universally for tamping minimum openings. Three companies report testing for compaction. One company performs its own testing. Two companies report selective testing by state and local agencies. Tamping is performed in 4 to 18 increments with 6 lo 12 as the norm.

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