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Notes and Requirements for Bending Creep Tests
When using the equipment, carefully read the technical manual, familiarize yourself with the technical specifications, operational performance, usage methods, and precautions, and strictly follow the step-by-step instructions provided in the instrument’s user manual.
2013-03-13
Construction of Cast-in-Place Asphalt Mixtures
The term "cast-in-place asphalt mixture" literally means "flowing pavement." It refers to asphalt concrete that is poured in a fluid state, eliminating the need for compaction during paving—simply spreading and leveling it out completes the construction process. Cast-in-place asphalt concrete is classified as dense-graded asphalt concrete. Its mixtures are characterized by high fine aggregate content, high mineral powder content, and high asphalt content. The relatively high asphalt content keeps the aggregates suspended. Unlike hot-mix asphalt concrete, cast-in-place asphalt concrete has a very low void ratio and its internal voids are discontinuous. As a result, cast-in-place asphalt concrete is impermeable and does not suffer from water damage within the layer. With its higher asphalt content, cast-in-place asphalt concrete exhibits superior performance.
2013-03-06
The convenience of the rotary compactor
The rotary compactor can compact asphalt specimens to a specified height or for a predetermined number of rotations. During each rotation, the angle is precisely recorded to ensure accuracy. If you wish to adjust the rotation angle, you can easily do so via buttons. Featuring a lighter weight, a smaller base, a compact design, a robust steel frame, a stable electronic control system, and a quiet operating environment, this rotary compactor has won widespread acclaim from users. This model can store up to 20 sets of test data, comes with a large-size backlit display, and includes a USB port for printing or exporting test results. All these advantages make it the most user-friendly rotary compactor on the market.
2013-02-27
Method for maintaining cast-in-place asphalt mixtures
Methods for Maintaining Cast-in-Place Asphalt Mixtures—Preventive maintenance refers to maintenance operations aimed at protecting the pavement surface, preventing further progression of distresses, slowing down the rate of deterioration in pavement performance, and ultimately extending the service life of the pavement. Preventive maintenance does not have the function of reinforcing the pavement; therefore, it should not be expected to improve the pavement’s strength or load-bearing capacity. Corrective maintenance refers to maintenance operations designed to repair localized damage or specific types of distresses on the pavement, where the damage has not yet spread to the entire pavement surface. Pavement rehabilitation refers to situations where pavement damage has already affected a significant portion of the pavement surface, resulting in comprehensive structural deterioration.
2013-02-20
Features of the Rotary Compaction Tester
The rotary compactor employs a brand-new, patented angle-guiding mechanism. By offsetting the angle of the mold base, the top of the mold is securely clamped in a fixed position, and rotating the mold base produces the desired angle. This significantly reduces wear and tear on moving parts. The rotary compactor also comes equipped with a specimen demolding device that can be conveniently placed next to the compactor. The height of the demolding device is adjustable, allowing operators to simply slide the mold and the compacted specimen directly into the demolder. For users with limited space, the demolder can be positioned mobile; alternatively, it can be anchored to the floor for added stability. To facilitate lifting molds containing specimens, the rotary compactor provides a...
2013-02-06