Abstract
A uniform test design method was used to investigate the storage stability, wear resistance performance, anti-slide performance, and color durability of a colored emulsified asphalt seal mixture (CEASM). The optimal mix proportions of the seal mixture were determined, and the engineering test application and effect evaluation analysis were performed. The results show that the clay, silica fume, pigment, mineral aggregate, and emulsified asphalt contents in the prepared mixture ranged from 15–17%, 12–16%, 10–14%, 28–32%, and 25–32%, respectively. In practical engineering applications, CEASM with a molding thickness of 2–3 mm stored in liquid form has a good storage stability and wear resistance, which is suitable for manual scraping pavement or mechanical spraying construction. In addition, it has been shown that colored pavement has the advantages of low cost, safety, environmental protection, convenient construction, good durability, and rapid molding. The CEASM also has great application prospects in color repaving for non-color roads, the early maintenance of colored pavement, and road disease maintenance. The results guide colored pavement designs to improve the storage stability of CEASM and enhance the color durability and crack resistance of colored pavements.
Highlights
Colored pavement has broad application prospects, such as inducing traffic and improving driving safety and transport smoothness (Ando et al, 2011; Xu et al, 2012)
A uniform test design method proposed by Kaitai and Yuan was used to investigate the effects of dosage for each component, including the clay, silica fume, 5-Day Storage Stability Tests About 300 mL uniform colored emulsified asphalt seal mixture (CEASM) sample is filtered by a 1.18-mm filter screen into the test tube of stability of asphalt emulsion
5-Day Storage Stability According to the requirements from the Technical Specifications for Construction Highway Asphalt Pavements (JTG F40-2004) in China, the 5-day storage stability index should be no more than 5%
Summary
Colored pavement has broad application prospects, such as inducing traffic and improving driving safety and transport smoothness (Ando et al, 2011; Xu et al, 2012). Such pavement can provide road divisions, beautify the environment, and contribute to mitigating heat islands (Synnefa et al, 2011). Colored pavement prepared with emulsified asphalt as a binder has several advantages, such as low cost, convenient construction, and a wide raw material availability and application range. The initial problems of colored pavement have not been effectively solved, such as its poor anti-slide performance and insufficient high-temperature stability. The maintenance and repair of colored pavements have gradually become urgent issues that need to be solved
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