MARSHALLS KEYBLOK ML 90 DEGREE - SPECIFICATION

MARSHALLS KEYBLOK ML90 (MACHINE LAY) 90 DEGREE RECTANGULAR BLOCK PAVING:
Where text is coloured as red, delete as appropriate.
Manufacturer and reference:
Marshalls plc
Landscape House Tel: 01422 312000
Premier Way Fax: 01422 312999
Lowfields Business Park www.marshalls.co.uk
Elland marshallspaving@marshalls.co.uk
West Yorkshire
HX5 9HT
Product Reference:
Marshalls Keyblok ML90 (Machine Lay) 90°
Marshalls Keyblok ML90 is intended for flexible pavements for parking areas and other paved surfaces
subjected to certain categories of static and vehicular loading and pedestrian traffic. See Notes - 1
Marshalls Keyblok ML90 is packaged in unique 90° herringbone formation and laid layer by layer. Each layer
consists of 44 full 200 x 100mm blocks (0.88m 2 ).

Plan Size:
200 x 100mm
Thickness: Weight (Each unit) in kg:
60mm 2.8
80mm 3.7
Edge:
Chamfered
Colour: Ref No. (60mm): Ref No. (80mm):
Grey PV2100260 PV5100270
Charcoal PV2100510 PV5100510
Buff PV2100760 PV5100760
Marigold PV2101010 PV5101010
Red PV2101510 PV5101510
Brindle PV2101760 PV5101770
Burnt Ochre PV2102010 PV5102010
Bracken PV2102260 PV5102260
Manufacturing Specification:
BS EN 1338 : 2003
Installation Specification:
BS 7533 – 3 : 2005
Marshalls own in house Specification:
Guidelines for the flexible installation of Marshalls 60 / 80mm Keyblok ML (Machine Lay) 90° Concrete Block
Paving.
Installation Orientation:
90° Herringbone
Pavement Construction:
Structural Design should be in accordance with BS 7533 – 1 : 2001, BS 7533 – 2 : 2001 or The Structural
Design of Heavy Duty Pavements for Ports and other Industries (Interpave)
Mechanical Installation:
By a qualified Machine Lay Installer to CPCS (Mechanised Block Pavement Laying Device) standard.
Laying Course:
30mm (final compacted thickness) of naturally occurring sand from the quaternary geological series or sea
dredged sands conforming to D.1.1 and Table D.1 of BS 7533 – 3 : 2005.
Laying course material should be compacted in accordance with method a) of section 5.3.3.2 of BS 7533 – 3 :
2005. With Keyblok ML the laying course can be placed and compacted by mechanical means.
Edge Restraints:
Edge restraints should be sufficiently robust to withstand anticipated traffic overrun, thermal expansion and
prevent loss of laying course material.
Installation:
By a qualified Machine Lay Installer to CPCS (Mechanised Block Pavement Laying Device) standard.
Joints and Jointing Material:
2 – 5mm of dried free-flowing silica aggregate conforming to D.1.2 and Table D.4 of BS 7533 – 3 : 2005.
Appendix:

1 BS 7533 – 3 : 2005 Pavements constructed with clay, natural stone or concrete pavers. Code of
Practice for laying precast concrete paving blocks and clay pavers for flexible pavements.
2 BS EN 1338 : 2003 Concrete paving blocks – Requirements and test methods
Notes:
1 Keyblok ML 90° 60mm
Pedestrianisation projects receiving only occasional heavy traffic
Car Parks receiving no heavy vehicles
Keyblok ML 90° 80mm
Pedestrianisation Projects receiving regular heavy trafficking
Car Parks receiving some heavy traffic
Footways regularly overridden by vehicular traffic.