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Layered double hydroxides (LDHs) are an ultraviolet-light (UV) resistant material. In this study, LDHs were used to modify bitumen. The optical and UV aging properties of LDHs modified bitumen were investigated. Firstly, the thin films of bitumen, with and without LDHs, were prepared. By using the UV-Vis spectrophotometer, absorbance, reflectance, and(More)
As a black material, asphalt has a strong heat-absorbing capacity which may cause pavement high temperature especially in summer. With the global climatic warming and the widely application of asphalt pavement, the problem of pavement high-temperature will be more serious. In this paper, the effect of the pavement high-temperature on road durability,(More)
Layered double hydroxides (LDHs) are an ultravioletlight (UV)-resistant material. In this study, two types of LDHs (Mg-Al-LDHs and Zn-Al-LDHs) were applied to modify bitumen by melt-blending. The effect of ultraviolet aging on the rheology and chemistry of LDH-modified bitumen was studied by means of dynamic shear rheometer (DSR), thin-layer chromatography(More)
The requirements for modified bitumen are increasing according to the higher load condition and worse serving environment in modern highway construction. And with the development of nano-technology in material design, it is found that polymer modifier combined with layer silicate can obviously improve the using properties. Nanometer montmorillonite (MMT)(More)
Bituminous materials are playing a vital role in pavement design and the roofing industry because of outstanding properties. Unfortunately, bituminous materials will release volatile organic compounds (VOC), making them non-environmentally friendly. Therefore, technologies that can be used to decrease the VOC emission are urgently required. In this(More)
Gneiss is a common type of rock on the surface of the Earth, the use of gneiss as aggregates might help meet the demands of asphalt pavement construction. However, the study of gneiss as aggregates in asphalt mixture is few, especially the influence of gneiss on adhesion and surface properties of aggregates. In this paper, the mineral composition and(More)
Self-monitoring asphalt concrete has a good electrical behavior. The monitoring of damage is valuable for structural health monitoring and service life prediction. In this paper, the process of cracking of self-monitoring asphalt concrete cracks were quantitatively described by indirect tensile test and combination of mathematical fractal theory. The test(More)
Combined with the application of granite asphalt mixtures in the pavement project along the Ma-Wu Expressway. In this paper, the amount of 20%, 40%, 60%, 80% cement was in equivalent replacement of common filler. The effects of cement on low-temperature property of granite asphalt mixtures were investigated by indirect tensile strength and three-point bend(More)
Montmorillonite (MMT) is a typical layered silicate. It has been widely used to modify polymers. In recent years, layered silicate has been receiving more attention from researchers in the civil engineering field, especially the organic nano-montmorillonite (OMMT). Flexible pavement plays an important role in structures of the primary highway at present.(More)
Silicone rubber is acknowledged to show perfect properties, such as weather resistance, nontoxic, tearing strength over a broad temperature region, high durable and so on. The silicone rubber in this study was used as a joint material in the road joint. The preparation and the mechanism of the silicone rubber were introduced. The mechanical properties of(More)