Month: September 2017

New method for Widening the Motorway

Widening a Motorway : In previous methods, widening motorways was approached without effective conservation. The method would involve a complete removal of the emergency lane within a road. This would occur before the new lane would be installed so as to have a linear transition from old road to new. Excavating land and creating a

California bearing ratio typical values

What are the typical CBR values? The harder the material, the higher the CBR value. A CBR value of 2% is usually found for clay, high-quality sub-base will have CBR values between 80% and 100%, and some sands may have values around 10%. The CBR testing can be applied to soils with a maximum particle

What equipment is used for a CBR test?

What equipment is used for a CBR test? Introduction A CBR tests measure the strength of soils and base materials in the field. This information is then used by pavement designers in their work. The field test is done by injecting a piston into the soil at the testing site and making a comparison of