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Sub Base






BONDED AGGREGATE

WOODROYD BOUND AGGREGATE SURFACING
SUB BASE REQUIREMENTS

Description

Woodroyd Bound Aggregate Surfacing is composed of specially formulated resin used to adhere natural aggregates to suitable substrates to produce a decorative and hard wearing surface dressing.

Substrate

The substrate must be of suitable construction for the proposed use. The Bound Aggregate Surfacing will impart no structural strength to the substrate. Concrete may require to be lightly abraded or shot blast cleaned to remove surface laitance. New concrete surfaces should have a fine wood float finish. New concrete must be surface dry before application.

Bituminous surfaces should be of a dense mixture and well consolidated to create a non-porous surface with no voids in the surface.

Existing bituminous surfaces must be of a sound construction.


EXAMPLES OF SUITABLE SPECIFICATIONS FOR MACADAM SUBSTRATE CONSTRUCTION.

New works to be carried out in accordance with "Specification for Highways Works December 1991 reprinted August 1993 with Amendments" as issued by the Department of Transport.

Binders should comply with BS3690 Part l or Part 3

 

Foot Paths

Base Course

20mm N.S. Dense Macadam Base Course to a minimum depth of 50mm (Series 1100 Clause 1105 BS4987 CL6.5

Wearing Course

3mm or 6mm Dense Macadam Wearing Course to a minimum depth of 20mm (Series 1100 Clause 1105 BS4987 CL 7.7 or 7.6) or Fine Cold Asphalt Wearing Course laid to a minimum depth of 15mm (Series 1100 Clause 1104)

 

Light Vehicular Traffic

Base Course

28 or 20mm N.S. Dense Macadam Base Course to a minimum depth of 70mm (Series 900 Clause 906 BS4987 CL6.4 or 6.5) or 60% 20mm Rolled Asphalt Base Course to BS594 Part 1 Clause 2 and 3 to a minimum depth of 60mm (Series 900 Clause 905 BS594 T2 CL2/4)

Wearing Course.

55% 10mm Aggregate Rolled Asphalt Wearing Course to BS594 Part 1 for wearing course design mixes with sub clauses 2,3 and 4 (Machine Laid) (Series 900 Clause 910 BS594 T3 CL3/4) or 30% 10mm Aggregate Rolled Asphalt Wearing Course to BS594 Part 1 for wearing course recipe mixes with sub clauses 2,3 and 4 (Hand Laid) (Series 900 Clause 910 BS594 T6 CL 6/3)

 

Road Construction

Road Base

40 or 28mm Dense Macadam Roadbase to a minimum depth of 90mm (Series 900 Clause 903 BS4987 CL6.3 or 6.4) or 60% 40mm or 28mm Rolled Asphalt Roadbase Course to a minimum depth of 90mm (Series 900 Clause 905 BS594 T2 CL2/6 or T2 CL 2/5)

Base Course

28 or 20mm N.S Dense Macadam Base Course to a minimum depth of 60mm (Series 900 Clause 906 BS4987 CL 6.4 or 6.5) or 60% 20mm Rolled Asphalt Base Course to BS594 Part 1 Clause 2 and 3 to a minimum depth of 60mm (Series 900 Clause 905 BS594 T2 CL 2/4)

Wearing Course

55% 10mm Aggregate Rolled Asphalt Wearing Course to BS594 Part 1 for wearing course recipe mixes with sub clauses 2,3 and 4 (Machine Laid) or 30% 10mm Aggregate Rolled Asphalt Wearing Course to BS594 Part 1 for wearing course recipe mixes with sub clauses 2,3 and 4 (Hand Laid) (Series 900 Clause 910 BS594 T6 CL6/3)

 

Copyright © 2005 Woodroyd Limited
Last modified: 18 March 2006