Latest:
Single rollers are okay
15:06 14 Aug 2002
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Single drum rollers in the 600kg/m to 1,000kg/m range have been
returned, temporarily at least, to the list of approved equipment
for the reinstatement of openings in highways pending laboratory
tests next month on their effectiveness.
The move follows the Highways Authorities and Utilities Committee meeting on 24 July and has been approved by the secretary of state for transport.
In early September an independent test centre will start the work in conjunction with manufacturers and contractors. Both the test parameters and methodology are to be agreed by the end of September and the testing, including site evaluation, is expected to take a year.
The manufacturers contend that their latest equipment can provide satisfactory compaction in eight passes or less. In addition, some preliminary tests undertaken by a contractor are believed to indicate that when proper materials and procedures are used, the performance of single drum rollers is satisfactory.
The move follows the Highways Authorities and Utilities Committee meeting on 24 July and has been approved by the secretary of state for transport.
In early September an independent test centre will start the work in conjunction with manufacturers and contractors. Both the test parameters and methodology are to be agreed by the end of September and the testing, including site evaluation, is expected to take a year.
The manufacturers contend that their latest equipment can provide satisfactory compaction in eight passes or less. In addition, some preliminary tests undertaken by a contractor are believed to indicate that when proper materials and procedures are used, the performance of single drum rollers is satisfactory.
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