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

Ask an Expert

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

Write your message here..

Related Questions

Float or slack of an activity is positive or negetive, 1. What take place w... 1. What take place when float or slack of an activity is positive Ans: It represents a situation where extra resources are available and the completion of the project is not de

What is the station at point b, What is the station at Point B? SO... What is the station at Point B? SOLUTION 3 Station at Point A = Sta 22+45  Station at Point B = (Sta 22+45) + 1028' = 2245'+1028' =3273'  = Sta 32+73

Return period for design situations, Question While design life will it... Question While design life will it be same as return period for design situations ? Answer Design life means least duration a structure is accepted to last. Longe

Pump selection, How do you determine pipe size and select a pump for 100 li... How do you determine pipe size and select a pump for 100 liter per second flow?

Determine the concept of resultant force at a section, Resultant force at a... Resultant force at a section We can determine stresses at top and bottom fibres, at a section of a beam, due to pre-stressing force and external loads. Using them, we can draw

#title., desirable properties in green concrete desirable properties in green concrete

Ferrous metal, introduction introduction

Steel design, have a beam with one lateral restraint at bottom and top flan... have a beam with one lateral restraint at bottom and top flange and load on top flange, should I use 2 segments or one segment of the beam ignoring bottom restraint as it is not in

Area bouded by curves, find the area bounded by the curve y=3x(x-2)^2 and t... find the area bounded by the curve y=3x(x-2)^2 and the x-axis

Structural analysis, sway portal frame sway portal frame