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Asphalt

CITYOFTECH

FRM Low-Noise Asphalt Concrete

Overview

  • FRM low-noise asphalt concrete is designed with higher porosity compared to normal asphalt concrete.
  • The air voids formed in the pavement or surface enable to reduce vehicle noise.
  • It is classified into low-noise drainage (FRM-D) and low-noise non-drainage (FRM-DLS) based on porosity.
  • Additive quantity of use by PG (per ton of asphalt concrete)
    82-22 : 8.5kg

Features

  • For the durability of the road pavement, the rubber-modified emulsified asphalt is essential as tack coat.
  • In case of using normal emulsified asphalt, it may cause re-emulsification by moisture during rainfall and decrease the durability of the pavement.
Comparison with Existing Drainage/Dense-Graded Pavement Products
FRM-D low-noise drainage
asphalt concrete		 Normal asphalt concrete FRM-DLS low-noise non-drainage
asphalt concrete
Porosity Overall porous Dense graded Surface porous
Drainage High Medium Low
Water resistance Medium High High
Noise reduction High Low High (8mm, 10mm) /
Medium (13mm)
Durability High Medium High
PG PG82-22 PG64-22 PG82-28

Applications

· Thin-layer paving methods include overlaying on top of the existing pavement and applying the overlay after cutting the existing pavement.
· For thin-layer paving, it should be repaired before applying the overlay to ensure durability.

Construction Site

Yongin-si, Giheung-gu
Gwangju-si
Yongin-si, Suji-gu
Seongnam-si
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