Our work
Overview
The bituminous layers are the part of a road that drivers see and feel. We lay binder and wearing courses on new roads and highways, and overlays and renewal coats on roads that are wearing out.
The mix is produced in a hot mix plant, carried to site, and laid by sensor paver and rolled while it is hot, so that each layer reaches its design density, thickness and levels.
What the work covers
From the first coat on a new base to a new surface on an old road.
Bitumen sprayed on the granular base to seal and bind it, and between bituminous layers so that they bond as one.
Dense bituminous macadam laid over the base: the main bituminous layer, which spreads the traffic load.
Bituminous concrete, or premix carpet with a seal coat: the smooth, dense surface that traffic runs on.
A new layer over a worn road, laid after the old surface is cleaned, patched and levelled.
How the layers go down
Bituminous layers are laid over a compacted granular base, with thin coats of bitumen between them so that the pavement works as one.
The finished surface, laid by sensor paver and rolled while hot.
A thin coat that bonds the wearing course to the binder course.
Carries the load from the surface and spreads it to the base.
Seals the top of the granular base and binds its loose particles.
The compacted granular base that the bituminous layers sit on.
Supports the base and drains water away.
Quality
Bituminous work in India is usually specified by the Ministry of Road Transport and Highways (MoRTH) Specifications for Road and Bridge Works and the codes of the Indian Roads Congress (IRC). We build to the drawings and the specification in each contract.
The mix and every layer are tested against the specification before the next one goes down, and the records are kept for the client's engineer.
Questions
The binder course, usually dense bituminous macadam, carries and spreads the load. The wearing course, bituminous concrete or premix carpet, is the smooth, sealed surface on top.
A prime coat seals and binds the top of the granular base, and a tack coat bonds one bituminous layer to the next, so the layers do not slip or separate under traffic.
Yes. The old surface is cleaned, patched and levelled first, then the overlay is laid to the thickness in the design.
Send a tender through the tender enquiry form on our website, and ask for our company profile through the contact form. You can also call us on +91 99251 98001 or write to info@vishalinfraglobal.com.
+91 99251 98001
info@vishalinfraglobal.com
