Bituminous macadam, Civil Engineering

Assignment Help:

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.


Related Discussions:- Bituminous macadam

Casing has to be left in for mini-piles, Question What are thought in d...

Question What are thought in determining whether casings have to be left in for mini-piles ? Answer Contrary to most of pile design, design of min-piles is controlled

State the coulomb wedge theory, A retaining wall is battered away from the ...

A retaining wall is battered away from the fill from bottom to top at an angle of 15° with the vertical. Height of the wall is 6 m. The fill slopes upwards at an angle 15° away fro

Road base and base course in flexible carriageway, Road base vs. base cours...

Road base vs. base course in flexible carriageway Roadbase is the most significant structural layer in bituminous pavement. It's designed to take up the function of distributi

Explain about the pot bearing - bridge bearing, Explain about the Pot Beari...

Explain about the Pot Bearing? POT bearing was developed in 1959 as an alternative to heavy steel sliding bearings. It consists of a circular non-reinforced rubber-pad fully en

Tools of measerments, where i can get the tools of different types of mease...

where i can get the tools of different types of measerments of differents elements of construction?

Define the spalling - underwater inspection of bridge, Define the Spalling ...

Define the Spalling - underwater inspection of bridge? A spall is a roughly circular or oval depression in the concrete. Corroding reinforcement can cause spalls and reinforcin

What is meaning of maintenance period, Question If contractor is likely...

Question If contractor is likely for defective works for 12 years with pact under seal, then what is meaning of Maintenance Period? Answer Faulty works constitute a br

Door, types of door with sketches

types of door with sketches

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd