LMA (Low Modulus Asphalt)

Product Description:

Assuming LMA refers to Low Modulus Asphalt within JKR specifications, this specialized mix is engineered for increased flexibility compared to standard asphalt concrete. It is typically specified by JKR for applications requiring enhanced fatigue resistance or accommodation of movement, such as bridge deck surfacing or overlays on existing pavements with cracks in Malaysia. Verification against the specific JKR specification clause is essential.

Key Features:

• JKR Compliant: Designed to meet the requirements of the relevant JKR Standard Specification for Road Works clause defining LMA.
• Mix Type: Specialized Hot Mix Asphalt formulated for high flexibility (low stiffness modulus).
• Layer Type: Can be Wearing Course, Binder Course, or specialized layer (e.g., SAMI - Stress Absorbing Membrane Interlayer) as per JKR spec.
• Binder Type: Typically utilizes Polymer Modified Bitumen (PMB) or specific bitumen grades/additives defined by the JKR spec to achieve low modulus.
• Properties: High flexibility, superior fatigue resistance, excellent resistance to reflection cracking. Exact properties and performance criteria defined by the JKR specification.
• Movement Accommodation: Designed to handle thermal or structural movement better than standard mixes.

Ideal for:

• JKR-specified bridge deck surfacing systems.
• Overlays on jointed concrete pavements or existing cracked asphalt roads under JKR maintenance schemes.
• Airfield pavement sections requiring high flexibility as per JKR or aviation standards.
• Pavement structures where significant thermal movement is anticipated.
• Specific applications determined by the relevant JKR specification clause.

Benefits:

• Prevents Reflection Cracking: Significantly delays or prevents existing cracks propagating through overlays.
• Accommodates Movement: Reduces stress and cracking potential on structures like bridges.
• Extended Fatigue Life: Withstands repeated traffic loading better, especially in flexible situations.
• Compliance Assurance: Meets mandatory JKR requirements for specialized flexible pavement layers.

Order our JKR-compliant LMA asphalt mix for challenging flexible pavement applications! (Confirm specific JKR clause)

Important Notes:

• JKR Spec is Key: The exact design, performance criteria, and layer suitability depend entirely on the specific JKR specification clause referenced.
• Requires careful production control and adherence to JKR laying/compaction standards.
• Structural contribution may differ from standard asphalt; design must account for this.
• Pricing typically per tonne. Delivered hot via insulated tipper trucks.