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Functions of cast-in-place asphalt mixtures
2012-11-28
Cast-in-place asphalt mixture is a dense-graded pavement material. When used for paving steel bridge decks, it is essential to pay close attention to the high-temperature stability of the mixture, including analysis of asphalt content and the proportions of coarse and fine aggregates. Immediately after the cast-in-place asphalt mixture has been spread and leveled, the pavement surface should be inspected, and any irregularities应及时 adjusted manually. Subsequently, the pavement must be thoroughly and uniformly compacted. This type of mixture exhibits excellent properties such as impermeability, strong deformation resistance, freeze-thaw durability, oil resistance, aging resistance, good overall integrity, and outstanding performance in resisting low-temperature cracking and fatigue cracking. Previously, the high-temperature stability of cast-in-place mixtures was evaluated using tests such as the Marshall test and high-temperature rutting tests. In this paper, we conduct a study based on the penetration test—the most widely used test today—focusing on several key factors including aggregate gradation, binder type, binder content, and mineral powder.
Relevant Information
The main advantages of the penetration tester are:
2023-11-02
The working principle of the compaction apparatus mainly includes the following points:
2023-10-23
2023-10-13