Details of technical specifications of bitumen macadam & bitumen concrete for any road work

This construction video briefly explains the technical specification for bitumen macadam and bitumen concrete essential for any road work.

Bitumen Macadam alias Asphalt Concrete is formed by blending aggregate, filler and bitumen and come in solid, medium or open graded on the basis of the end application.

Macadams are categorized into three primary layer categories like Base, Binder and Surface Course. It is applied as a binder course for roads where lots of heavy commercial vehicles pass through as well as a closed-graded premix materials exist with voids content 5-10 per cent. It has strong and long-lasting surface.

Bituminous concrete refers to a sort of construction material that is employed for paving roads, driveways, and parking lots. It is formed by mixing stone and other forms of aggregate materials combined jointly through a binding agent. This binding agent is known as "bitumen" and is a by-product of petroleum refining. It contains a dense, sticky texture like tar once heated, then develops a thick solid surface as soon as it gets dried. Bituminous concrete is also extensively recognized as asphalt in various parts of the globe.

This material does not include cement. It has typical black appearance. It is frequently placed right over a gravel base layer to build up new roads and parking lots, but may also be poured over prevailing concrete to patch-up or smooth out bumps and voids.

As soon as the bituminous concrete are poured onto the roadway, the surface is leveled and compacted through a large paving machines.

For Bituminous Macadam :-
1) Grade of bitumen should be vary from 60 to 70

2) Temperature at different stages :-
a) At the time of blending materials maximum temperature should be 1650C
b) At the time of laying, the temperature should be 1250C
c) At the time of rolling, the temperature should be 900C

3) Levels (tolerance) – At the time of rolling, the layers should be +6 M to -6 M.
4) Field Density Test – Here, compaction should be 98%; 1 test per 250 m2 of area.

To get the complete details, watch the following video.

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Published By
Rajib Dey
www.constructioncost.co

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Benefits of Mivan Aluminium Formwork System for construction sectors

Formwork belongs to either temporary or permanent die or molds into which fresh concrete or equivalent materials are poured to solidify later. Lots of time are required for the development of formwork. It comprises expenditure up to 20 to 25% of the cost of the structure or all the more. Design of these temporary structures is created in an cost-effective way. The procedure for eliminating the formwork is called stripping. Stripped formwork is reusable. Reusable forms are called panel forms and non-usable are known as stationary forms.

Timber is mostly recognized as material for formwork. The main drawback with timber formwork is that it bends, expands and shrinks easily . To overcome this issues MIVAN Formwork can be used to get rid of the issue.

MIVAN ALUMINIUM FORMWORK: A European construction company has created Mivan aluminium formwork system. The product is very cost-effective and suitable for the entire construction world.

Mivan technology can be used for building up great number of houses in a quickest possible time with room size forms to develop walls and slabs in one continuous pour on concrete.

Aluminum formwork saves huge cost toward repetitive Buildings layouts and above the plinth work. This system is very unusual because all the components in a building along with slabs, beams, walls, columns, staircases, balconies and special window hood are formed with devoid of any block works or brick works.

With it’s modular system, it facilitates smooth set up and elimination of formwork and the construction work can progress rapidly containing minimum deviation in dimensional tolerances. System is very compliant and easily customizable for any alternation in the layout. It comprises of four components Beam components, Deck components and wall components which are built with high strength aluminium alloy.

Given below, some useful benefits of Mivan Form :-

Easy to build up and eliminate formwork
Similar formwork can be applied for 1000 times
Plastering is not necessary
High seismic resistance
Rapid finishing of formwork

Read more

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Published By

Rajib Dey

www.constructioncost.co

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