Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The Performance of Asphalt Wearing-Courses Containing Crushed-rock Fine Aggregate: A30 Blackbushe (1962)
The specification for rolled-asphalt wearing courses virtually excludes the sole use of crushed rock for the fine aggregate but in some areas this fine aggregate is the only material that is economically available. The performance of asphalts made with a crushed-rock fine aggregate from Leicestershire with two different gradings has been compared with that of rolled asphalts to BS 594 containing sand fine aggregate after nine years of service on the heavily-trafficked Trunk Road A30 at Blackbushe. The control sections of rolled asphalt containing sand gave very good performances over the entire range of binder contents (7.0 to 8.3 per cent). The coarser of the crushed rocks produced materials that were equally durable and in addition had resistances to deformation and to skidding that were superior to those of the control. The asphalts with the specially-screened finer crushed rock were all in good condition for seven years but subsequently cracking developed in the leanest mixtures; the satisfactory range of binder contents is not sufficient for practical purposes. A review of the performance of this type of asphalt including that of some examples at other sites has been used to draw up a provisional specification.
The Performance of Asphalt Wearing-Courses Containing Crushed-rock Fine Aggregate: A30 Blackbushe (1962)
The specification for rolled-asphalt wearing courses virtually excludes the sole use of crushed rock for the fine aggregate but in some areas this fine aggregate is the only material that is economically available. The performance of asphalts made with a crushed-rock fine aggregate from Leicestershire with two different gradings has been compared with that of rolled asphalts to BS 594 containing sand fine aggregate after nine years of service on the heavily-trafficked Trunk Road A30 at Blackbushe. The control sections of rolled asphalt containing sand gave very good performances over the entire range of binder contents (7.0 to 8.3 per cent). The coarser of the crushed rocks produced materials that were equally durable and in addition had resistances to deformation and to skidding that were superior to those of the control. The asphalts with the specially-screened finer crushed rock were all in good condition for seven years but subsequently cracking developed in the leanest mixtures; the satisfactory range of binder contents is not sufficient for practical purposes. A review of the performance of this type of asphalt including that of some examples at other sites has been used to draw up a provisional specification.
The Performance of Asphalt Wearing-Courses Containing Crushed-rock Fine Aggregate: A30 Blackbushe (1962)
F. A. Jacobs (Autor:in)
1974
30 pages
Report
Keine Angabe
Englisch
Wet packing of crushed rock fine aggregate
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Wet packing of crushed rock fine aggregate
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Wet packing of crushed rock fine aggregate
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Wet packing of crushed rock fine aggregate
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