What is the difference between strongly weathered granite and fully weathered granite? Introduction of bearing capacity

There are many building materials made of granite around us. For example, the materials selected on the operating platform of some kitchen desktops are often beautiful and practical granite. But today I will give you an example of strongly weathered granite with better performance. We all relate to the difference and comparison between it and fully weathered granite, as well as the parameters of bearing capacity and compressive capacity. Interested friends can comprehensively draw reasonable and reliable suggestions and schemes, refer to the performance characteristics of strongly weathered granite, and understand appropriate and reliable purchase suggestions.

1. What's the difference between fully weathered granite and strongly weathered granite?

Fully weathered granite has been completely weathered into gravelly cohesive soil. Strongly weathered granite does not have this weathering. Bored cores are generally brownish yellow, massive and short columnar, and the cross sections are mostly muddy filled or corroded.

Second, the bearing capacity of strongly weathered granite

The characteristic value of bearing capacity of strongly weathered rocks varies with lithology. The rough data provided in JGJ94-2008, GB5002 1 and other specifications are for reference only, and should be based on the official investigation report (which has been audited by the drawing examination room) or the results of the rock foundation load test conducted by a qualified testing department. Generally, fak is around 250Kpa.

Strong weathering has poor viscosity and disintegration, so undisturbed soil samples are easily disturbed. Even if the sampling is good, the soil cutting pieces in geotechnical test are easily disturbed when carrying out compression-shear test, so the compression-shear index is often small, which is caused by the nature of soil and there is no good solution. Therefore, some local codes even stipulate that if there is a big difference between geotechnical test and in-situ test, the in-situ test should prevail, and the strength and deformation indexes should be evaluated through in-situ test data, probably because. As for whether to take samples, I think it is necessary to take soil samples for total weathering, because the completely weathered rock structure is basically completely destroyed, only the structural strength is retained, and the soil is solid. In addition, the previous survey and foundation specifications classified the total weathering as residual soil before distinguishing the total weathering, so it is necessary to take soil samples for total weathering. Most of the strongly weathered structures are destroyed and most of the mineral components are eroded into clay minerals. However, the rock structure is well preserved and the soil sample is suitable, so it is impossible to take the soil sample, and some rocks can be selected for compression.

Three. Compressive modulus of strongly weathered granite

The compressive modulus of strongly weathered rocks is generally 20-50mpa.

Choosing a suitable building material product can maximize its value through later installation and operation skills. For example, some commonly used materials on kitchen countertops, similar to granite mentioned above, have stable performance and beautiful color. Besides, there are many styles to choose from, including the strongly weathered granite mentioned above, which is a good suggestion. Let me give you an example today. The difference between similar confused concepts is the difference between strongly weathered granite and fully weathered granite. In addition, there are data about their parameters and compressive capacity, which everyone can understand.