Page 12 - finalreport

5
Performance Evaluation Report on Rural Roads Constructed Using CRRI-Bitchem Cold Mix in Different District of Assam during 2008-2009

Aggregate –
The coarse aggregate or fines shall consist of crushed rock, crushed gravel or other hard material as per specification. They shall be clean
, hard, durable, of cubical shape, free from dust and soft or friable matter, organic or other deleterious matter.

1.6 Road Construction using CRRI-BitChem Cold mix Technology

Table 1 Testing of Aggregate for OGPC/Seal Coat Specification (IRC:SP:79:2008)

Property Test Specification

Toughness Aggregate Impact Value 30percent maximum

Particle Shape Flakiness and Elongation Index 35percent maximum
Water absorption Water absorption test 1 percent maximum

Stripping Coating and stripping of Bitumen aggregate 15percent maximum
mixtures

Note: For Seal Coat, Water absorption value is 1 percent maximum.

QSP/MR/19/ ACED/BTCM/214/2013 CSIR-NEIST/CNP-462