California Bearing Ratio (CBR) testing has become the most common way to evaluate the strength and bearing capacity of subgrades and base courses in foundation and pavement design.
Whilst CBR testing is a valuable tool for specific applications, it has important limitations when used for testing cement stabilised soils. Engineers should consider alternative testing methods.
The behaviour of soils stabilised with RoadCem technology have enhanced properties such as raised elastic modulus, greater density and higher impermeability which are not revealed by CBR testing.
The following pdf report on CBR testing is worth a short read.
http://www.powercem.co.uk/wp-content/uploads/2024/11/California-Bearing-Ratio.pdf