What is the working frequency of rapid impact compaction?

Tell everyone that how many times or how many hammers a rapid impact compaction hits at a time is not the correct answer once and for all. There are many external factors that affect the quality of engineering construction, there may be five levels such as "materials, machinery, methods, environment, and personnel", and the problems of one stage of these five levels will affect the quality of construction.

As far as the rapid impact compaction is concerned, although the operator and industrial equipment are easy to fix, once the construction environment changes, the construction method or construction process may change due to the influence and restriction of external factors such as the characteristics of the foundation material, the moisture content, and the road construction regulations.

First of all, the rapid impact compaction is also known as the "rapid impact compaction machine" high-speed is also one of its key features. Here, high speed refers to high operating frequency. The operating frequency of the rapid impact compaction machine depends on the design ability of the equipment itself and the equipment conditions, but it is also affected by the oil pump supply capacity of the rapid impact compaction load-bearing equipment (cutting machine or excavator). Rapid impact compaction working frequency in 30-80 times per minute, can be divided into three gears, namely low, medium and high-grade, for example, HC36 rapid impact compaction rated ramming energy 36kJ (automatic mode 6 ~ 36kJ, 3 gear, adjustable, artificial mode when arbitrary), the use of 1m diameter of the standard rammer plate instantaneous grounding pressure (pressure) ~ 2.5MPa, the use of diameter of 0.78m rammer when the instantaneous grounding pressure is greater than 4MPa, generally with 5t loader complete set of use.

The ramming frequency is directly related to the basic compaction degree of compaction and is a key factor affecting the movement of the compaction base material particles.

In actual construction, the grade, structure and physical properties of the soil are different, and it is difficult to determine the actual variable values of the hydraulic ramming frequency. Therefore, the construction of rapid impact compaction can not completely rely on the old construction process, and the compaction test before construction is very necessary.

Of course, the construction party or designer can also summarize and accumulate more construction experience. In the construction process, when encountering construction requirements that are close to the previous construction environment and construction regulations, you can refer to the previous construction experiment records to determine how many hammers the rapid impact compaction hits at a time during the construction process.

In general, the more effective and appropriate method in the construction of rapid impact compactor is to determine how many hammers the rapid impact compactor hit at a time according to the test section, that is, through test compaction, and determine the accurate strike frequency.