Bituminous macadam, Civil Engineering

Bituminous Macadam:

Bituminous Macadam (BM) is a base course in which coarse aggregates are mixed with a bituminous binder. The mix is open-graded with 20-25 per cent voids. Two gradings are used :

Grading 1

Nominal size of aggregates 40 mm Thickness of layer 75-100 mm Binder content : 3.1-3.4 per cent

Grading 2

Nominal size of aggregates 19 mm Thickness of layer 50-75 mm Binder content : 3.3 to 3.5 per cent

The binder used is 60/70 penetration grade bitumen. The mixing is done in a hot-mix plant and the laying is done by a paver finisher. Rolling is done by a 80-100 kN vibratory roller.

Posted Date: 1/22/2013 4:46:52 AM | Location : United States







Related Discussions:- Bituminous macadam, Assignment Help, Ask Question on Bituminous macadam, Get Answer, Expert's Help, Bituminous macadam Discussions

Write discussion on Bituminous macadam
Your posts are moderated
Related Questions
determine the maximum positive and negative shear shear

Question Is it resourceful that engineers rely solely on Hiley's formula in designing of H-piles? Answer About 90 percent of H-piles accept Hiley's formula for desig


Define the Ignitability - Hazardous Waste - is a liquid with flash point - Not a liquid and capable of spontaneous and sustained combustion under normal conditions - Ign

Basic Keywords related to road materials: Sub-grade     :            The portion of road embankment immediately below the pavement. Soil Classifications :            A sy

Question For a rigid pile cap with vertical piles at middle and raking piles at the sides, what is pattern of load distribution of piles in such agreement? Answer Becau

Large scale integration chips have between the  components? Answer : It is between 100 and 1000 components.

Distinguish between dry and wet corrosion

earthen dam and gravity dam

Bonding performance to concrete: Epoxy-coated bars vs. galvanized bars  Based on the findings of CEB Bulletin 211 the bonding of galvanized bars to concrete is lower in early