What are the two types of recycled aggregates defined in this code?

Type A, derived from Reclaimed Asphalt Pavement (RAP), and Type B, derived from Crushed Concrete/Brick Masonry from C&D waste (Clause 4).

What is the maximum amount of RAP (Type A) allowed in Bituminous Concrete (BC) layer?

Up to 30% by weight of the total aggregate, as per guidance in Table A.1.

What is the maximum permitted Los Angeles Abrasion value for Type A (RAP) aggregate?

35 percent, as specified in Table 1.

Is there a minimum binder content required for a material to be classified as RAP (Type A)?

Yes, it must have a minimum bituminous binder content of 2.0 percent by mass of recycled aggregate (Table 1).

IS 16760

: 2018

Recycled Aggregate for Use in Bituminous Concrete - Specification

CurrentSpecializedSpecificationBIMTransportation · Aggregates and Sand

Archive.org BIS Portal Google

This standard specifies the requirements for recycled aggregates derived from Reclaimed Asphalt Pavement (RAP) and Construction & Demolition (C&D) waste for use in bituminous concrete mixes. It outlines the physical properties, testing methods, and allowable usage percentages to ensure quality and performance in road construction, promoting sustainable practices.

Specifies requirements for recycled aggregates derived from construction and demolition waste, suitable for use in bituminous concrete mixes.

Quick Reference Values

Max Water Absorption (Type A - RAP)2.0%

Max Water Absorption (Type B - C&D)3.0%

Max Los Angeles Abrasion Value (Type A - RAP)35%

Max Combined Flakiness and Elongation Index (Type A - RAP)35%

Minimum Bituminous Binder Content in RAP (Type A)2.0% by mass

Max Foreign Materials in RAP (Type A)1.0% by mass

Practical Notes

The standard differentiates between Type A (from RAP) and Type B (from C&D waste), with Type A generally having stricter requirements and higher allowable usage.

Proper processing, including crushing, screening, and removal of contaminants, is crucial to meet the specified quality, especially for Type B aggregates.

When using RAP (Type A), the mix design must be adjusted to account for the aged binder present in the recycled material.