How much to tarmac a drive? The cost of a tarmac driveway per square meter (m2) will depend on the size and shape of the area, but to avoid ‘cowboy builders’ and a poor job you should always be prepared to pay at least between £45–£60 per square meter.

1 kg/sq ft ≈ 10.763 910 416 7097 kg/m2.

One cubic meter of concrete converted to tonne (Metric) equals to 2.41 t. How many Metric tonnes of concrete are in 1 cubic meter? The answer is: The change of 1 m3 ( cubic meter ) unit of concrete measure equals = to 2.41 t ( tonne (Metric) ) as the equivalent measure for the same concrete type.

Calculating how much asphalt you need

1. Estimate the volume of asphalt needed, using geometrical formulas and plans or measurements, including width, length, and depth (thickness).
2. Estimate the density of the hotmix to be used.
3. Multiply the volume by the density (in the same units) to get the weight.

It means that 1.010kg to 1.060kg is one desi cubic meter. Each tons of asphalt needed 70Kg Bitumen and the rest is aggregates.

1- How can we calculate the required DBM/BC quantity? Length of DBM/BC layer (L) = 1 Km = 1000 Met. Breadth of DBM/BC Layer (B)= 5 Met. Thickness of DBM/BC Layer (T) = 50 mm =0.050 Met.

DBM (Dense Bituminous Macadam) & BC/ SDBC (Bituminous Concrete/Semi Dense Bituminous Concrete)

A grade of 60/70 bitumen means the penetration value is in the range 60 to 70 at standard test conditions which usually used as a Paving Grade. Bitumen 60/70 is applicable for the production of asphalt pavements with superior properties and for construction and maintenance of roads.

Definition of bitumen penetration grade 60/70 Bitumen penetration grade 60/70 means the penetration value is in the range 60 to 70 at standard test conditions which commonly used as a Paving Grade. Bitumen is applicable for the production of hot mix asphalt for bases and pavements and for road construction.

Penetration Grade 80

They are:

• Hardest Bitumen Grade 40 –50.
• 60 –70.
• 85-100.
• 120-150.
• Softest Bitumen Grade 200-300.

The bitumen specification used in India at the present time has a 60/70 penetration grade but it was 80/100 and equivalent to an AC-10 viscosity grade until recently.

There are three different grades available in asphalt. The grades available are I-2, also known as base; I-5, known as top ;and the I-4 or commercial top grades. The difference in the tree grades are that the I-2 or base consists of ¾ inches of stone. The base grade is generally used in corn stabilizing level.

Different Types of Bitumen, their Properties and Uses

• Penetration Grade Bitumen.
• Oxidized Bitumen.
• Cutback Bitumen.
• Bitumen Emulsion.
• Polymer – Modified Bitumen.

The two substances are very similar and sometimes the terms tar and bitumen are used interchangeably. Bitumen can be naturally occurring whereas tar usually has to be artificially distilled. Also, Bitumen occurs in both solid and liquid forms whereas tar is generally always a viscous liquid.

Three types of bituminous emulsions are available, which are Rapid setting (RS), Medium setting (MS), and Slow setting (SC). Bitumen emulsions are ideal binders for hill road construction.

Which bitumen does not need heating? Explanation: The cutback bitumen which is the most economical type may or may not require heating, whereas the remaining required to be heated.