Stone Mastic Asphalt

Stone Mastic Asphalt (SMA) surface course materials are produced using high-quality aggregates, bitumen and cellulose fibres. We supply Commercial SMA, which is designed for low-traffic uses (eg house fronts and driveways), while Industrial SMA is for more heavy-duty requirements and larger traffic movements. Our SMA materials are suitable for private roadways, driveways, yards, carparks, house fronts, etc. Key features & benefits

• Has good deformation resistance

Polymer Modified Stone Mastic Asphalt

Polymer Modified Stone Mastic Asphalt (PMSMA) is a gap-graded mix laid at a thickness of between 30mm and 40mm. It is manufactured using a polymer modified binder (PMB), giving the aggregate skeleton additional strength. It’s used in constructing new roads and overlaying existing roads. It’s highly durable and has resistance to deformation. PMSMA must be designed and manufactured in accordance with the NRA Specification for Road Works, when used on national roads. All coarse aggregates must have a PSV value of 60 or greater when skid resistance is required. Key features

• Nominal size aggregate 14mm

Hot Rolled Asphalt

Roadstone Hot Rolled Asphalt (HRA), a predominantly sand-based bituminous mix, is a durable surfacing material; its high sand and binder content make it almost impervious. It has a wide range of uses – from private works to national primary and secondary roads. In 30% and 35% HRA mixes, pre-coated chippings are applied to its surface at determined spread rates to provide texture. Key benefits

• Resists compaction

Marshall Asphalt

Marshall Asphalt mixes are highly durable, have good rutting resistance and are used for airport runways, taxiways, industrial yards, house driveways, etc. The recent production of Marshall Asphalt with modified binders further enhances its performance. A wide range of mix types can be supplied, including fuel-resistant and polymer modified mixes. Key benefits

• High deformation resistance

Thin Layer Asphalt

Thin Layer Asphalt is a specialised surfacing material with high stone aggregate content, crushed rock fines and Polymer Modified Bitumen (PMB) for binding. With excellent resistance to deformation and good surface texture, it is used on major and minor roads. Key benefits

• Lower road noise levels due to texture and porosity

Asphalt Concrete

Asphalt Concrete (Bitumen Macadam) is a mixture of aggregate, filler and bitumen. Depending on the end application, it can be dense, medium or open-graded. Macadams can be classified into three main layer categories: base, binder and surface course, with different combinations of aggregate and binder. Base and Binder Course materials usually form the lower layers in a pavement, giving it its load-bearing capability. The properties of the Surface Course depend on the performance requirement. Asphalt Concrete is used in national primary and secondary roads, driveways, carparks, pathways, etc. Key benefits

• Durable

Duraflex

A high-PSV aggregate surface course material, Duraflex – as the name implies – is both durable and flexible. Thanks to its aggregate composition and mix design, it’s strong and extra-resistant to rutting (compared, eg, to Hot Rolled Asphalt). It’s primarily used for road surfacing for national primary and secondary roads, and urban streets. Key benefits

• Durable, flexible and high-strength

Concrete

Due to the black colour of the bitumen used in the mix, the conventional choice of colour for bituminous materials has been either black or deep red. However, DM Morris can supply a recently developed pigmentable ‘clear’ binder, which allows a greater variety of colours to be produced to suit the customer’s needs. Even the conventional red can be enhanced. These pigmentable binders can be used in a variety of mixes including thin surface courses, SMAs and the more traditional asphalt concrete (macadam). They can be used to create visual awareness of traffic calming or cycle-lane delineation, or to enhance the surface to blend in or contrast with the surrounding area. They are laid hot in the traditional manner, either by hand or with a conventional paver.

Coloured Materials

DM Morris provides a full range of Readymix Concrete, from mortar to structural concrete. We supply all sectors, including residential, industrial, commercial and civil engineering, and cater for all concrete mix requirements from 5.0 N/mm2 to 60 N/mm2. We can provide special mixes on request.

Hot Applied Thermoplastic

Hot Applied Thermoplastic is a hard-wearing material for heavily trafficked roads. It can be applied as a flat or profiled line, by screed, spray or extrusion, and sets by temperature loss – hardening within about 60 seconds of application. White and yellow are the main colours used, but others are available. Hot Applied Thermoplastic road marking allows solid glass head to be added, which enhances the reflectorisation effect and thus greatly intensifies the visibility of road markings at night time. It is also more durable than road paint. Technical specification

• All materials used comply with IS EN 1871: Road Marking materials – Physical Properties