CBR testing (California Broadening Ratio) is mainly undertaken for road resurfacing. It was first introduced by the state highway department.
This is a penetrating penetration test that is normally used for evaluating the subgrade strength of roadways, pavements, and bridges. This is also known as the cross slope entrance test. It has been successfully used for several years on bridge construction projects in the US. With continuous research, there are now more advanced versions of this test.
The CBR tests that are carried out by state highway departments are normally conducted annually in areas where heavy traffic exists, such as in California. It is also important for them to conduct the test as close to the test site as possible, because this will enable them to observe changes in the surface over time. They can also check if the roads have been widened after the CBR test has been performed.
When conducting CBR testing, the contractor may use either a wheel bearing or a tire to determine the test conditions. Depending on the material used in the construction of the bridge, the contractor may also conduct a pre-fabricated subgrade to determine its true load capacity. CBR testing also uses an inspection panel to check if the concrete surface is void of cracks, breaks, or dents.
In California, there are two types of CBR testing. One involves the surface area of the road and the other include the cross slope. Before the CBR is conducted, the state highway department will analyze the traffic flow pattern on the roads near the project area. By observing the traffic flow, they will determine the ideal amount of water required for the bridge’s design.
For any road resurfacing project, there is a risk of failure if certain aspects of the surface are not properly evaluated. For example, if the CBR results show that too much traffic is being driven over the same portion of the road, there is a risk that the traffic will erode the asphalt or cause cracks to form. In such cases, the contractor may want to make some changes to increase the surface area of the road. In addition, they may also want to make small adjustments to the width of the road in order to reduce the weight of the road and increase the safety features.