Dense Graded Asphalt

Maximum nominal aggregate sizes ranged from 40mm to 3.35mm. Mixed with in-situ filler, hydrated lime or other external filler. Recycling may incorporate the standard 30%, or up to 50% or higher proportion of RAP (Recycled Asphalt Pavement). Binder additives such as lake asphalt, polymers, or pre-blended PMB (Polymer Modified Binder) are used for improved performance. Compacted hot for dense, regular and good rideability surface.

Open Graded Asphalt

A porous mix also known as Friction Course, provides high voids content in excess of 20% for quick surface water drainage to reduce water spray during raining for improved visibility on highways, and high surface texture for skid resistance and noise reduction. Incorporation of PMB for improving durability of finished surface.

Stone Mastic Asphalt (SMA)

Provides durable surface with excellent rut resistance and superior long-term performance. Textured surface helps reduce noise and improves skid resistance. The latest 6mm SMA is specially designed for noise reduction by up to around ~3dB, and delivers exceptional ride comfort.

Mastic Asphalt

Also known as Gussasphalt, with incorporation of TLA (Trinidad Lake Asphalt) or PMB to provide thin, durable and very flexible surfacing for steel deck of suspension or cable-stayed bridges. Applied as wearing course or binder/base course.

Epoxy Asphalt

Batched and placed under extremely tight temperature ranges. Provides thin, durable and fatigue-resistant surfacing for steel deck of suspension or cable-stayed bridges.

Rubber Asphalt

Incorporates recycled crumb rubber from waste tyres to enhance binder elasticity and improve pavement durability. Benefits include better resistance to cracking and fatigue, enhanced skid resistance, noise reduction, and extended service life under heavy traffic.

Wet Mix Process: Crumb rubber is pre-blended with bitumen to produce a highly elastic binder with improved fatigue resistance and noise control. Uses a smaller amount of rubber to efficiently enhance pavement properties.

Dry Mix Process: Crumb rubber replaces part of the aggregates. Consumes more rubber, effectively reducing solid waste and helping to divert waste tyres from landfills.

Both methods support sustainable road construction. Applicable in highways and heavy-duty pavements.

Glassphalt

Incorporates crushed recycled glass into the asphalt mix, typically replacing a portion of the fine aggregate. Offers environmental benefits by diverting glass waste from landfills. Suitable for local roads, footpaths, and decorative surfacing. May require adjustments in mix design to ensure workability and durability.

Cutback Asphalt

Easy to work and compact. Provides extended working time. Often chosen as the base material for very large tanks.

Specialty products

AAL has developed new surfacing materials and provided durable and cost-effective surfacing solutions to various projects with special needs, such as for container terminals, cross-harbour tunnels, temporary steel deck fly-overs, and steel bridges. Products ranged from incorporation of various bituminous modifiers into bituminous mixes, development of tailor-made PMB, bituminous waterproofing materials, new durable mastic asphalt / gussasphalt, and large stone mixes.

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