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Common Issues with Rotary Compaction Meters
The rotary compactor is primarily used to determine the mechanical and volumetric properties of hot-mix asphalt mixtures. It is a key piece of equipment for asphalt mixture testing within the high-performance Superpave pavement technology system. Featuring fully automatic microcontroller-based load control, electronic force measurement via gravity sensors, and an LCD display—let’s now take a closer look at some common issues with rotary compactors!
2022-10-10
Why has the rotary compactor become a commonly used tool in the preparation of asphalt mixtures?
The mechanical and service performance of asphalt mixtures directly affects the functionality and characteristics of asphalt pavements. This instrument is used to provide samples for asphalt mixture testing, predict the long-term performance of pavements, and control or detect mixture quality by measuring rotational shear. The rotary compactor simulates in-service vehicle traffic on pavements, performing rotational compaction on prepared asphalt mixtures—thus offering advantages over the conventional Marshall compaction method.
2022-09-28
Performance characteristics of the rotary compactor
Specimens molded using a rotary compactor can accurately simulate the compression conditions experienced by asphalt pavements. Therefore, the rotary compactor boasts a compact, robust, and durable design that is easy to move. It features built-in mold angle measurement capabilities, allowing for the precise control or evaluation of mixture quality through rotational shear testing. The extra-large-capacity mold can accommodate larger volumes of mixtures, ensuring that the physical and mechanical test data obtained from the specimens are highly objective and accurate. This enables reliable prediction of pavement’s long-term performance. The compactor also facilitates easy compaction and demolding, stores critical data from up to 20 tests, offers multiple output options, and comes equipped with mixture-design software. Now, let’s take a closer look at the performance characteristics of the rotary compactor!
2022-09-27
Factors Affecting Compaction by a Compaction Tester
Factors Affecting Compaction by a Compaction Tester
The basic components of a compaction tester are the compaction cylinder and the compaction hammer. The former is used to prepare soil samples, while the latter is used to compact these samples. Depending on the particle size of the compacted soil, two different specifications of compaction cylinders are employed. The main parameters of the compaction test method and the corresponding equipment shall conform to the table below. Compaction tests are divided into light compaction and heavy compaction. Light compaction tests are suitable for soils with particle sizes not exceeding 20 mm, whereas heavy compaction tests are suitable for soils with particle sizes not exceeding 40 mm. Under the same compaction conditions, the compaction characteristics of different soils vary. Soils with well-graded particle size distributions exhibit higher dry densities and lower moisture contents, thereby meeting requirements for strength and stability.
2022-09-19
What are the product features of the rotary compaction instrument angle calibrator?
The design of the rotary compactor angle calibrator incorporates numerous features to ensure operator safety and minimize manual intervention when handling hot test molds filled with asphalt mixtures. The test molds can be slid directly from the workbench into the compaction chamber and then, after compaction, slid into the dynamic sample separator—all without requiring any lifting actions. The compaction chamber is fully enclosed, and its inspection door is fitted with safety glass, allowing operators to observe the compaction process through the safety glass. The door automatically opens and closes and is equipped with an interlock device that prevents it from being activated while closed. An emergency stop button is also provided.
2022-09-08