Preparation and characterization of luminescent road-marking paint
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International Journal of Pavement Research and Technology Journal homepage: www.springer.com/42947
Preparation and characterization of luminescent road-marking paint Yanqiu Bia, Jianzhong Peia, Zixuan Chena, Liu Zhangb, Rui Lia*, Dongliang Huc b
a School of Highway, Chang’an University, Xi'an, Shaanxi, China Shijiazhuang Municipal Design &Research CO.,LTD, Shijiazhuang 050011, China c Southeast University, Nanjing 211189, China
Received 9 September 2019; received in revised form 3 August 2020; accepted 4 August 2020
Abstract
The main purpose of this study is to develop and optimize a luminescent road-marking paint to improve the visibility of the traditional used roadmarking paint. This paint is produced with an emulsion of an acrylic copolymer containing a self-made modified luminescent powder and various additives. Experimental coatings were manufactured on a laboratory scale and applied using a brush on tinplate panels and asphalt concre te surface. Results found a series of properties which indicated that the paint made with the additives containing sodium hexametaphosphate and sodium carboxymethyl cellulose exhibited a satisfactory performance when mixed with silicone emulsion. The physical, mechanical and corrosion resistance was studied in order to evaluate the feasibility of application onto the road surface. The results show that the paint meets the basic performance requirements of road-marking paint and has little effect on the texture depth of the road surface. The luminous performance, abrasion resistance, adhesion and water res istance at room temperature meets the basic requirements for pavements. Keywords: Road-marking paint; Water-based luminescent paint; Modified luminescent powder; Optimized formulation
1. Introduction Currently, hot-melt road-marking paints are commonly used on high-grade roads, for their outstanding advantages. These include easy storage, an excellent film-forming performance, and fast traffic opening. However, impurities tend to adhere to the formed markings resulting in poor visibility during service, especially during rain and/or at nighttime, which affects driving safety. In addition, the removal of the discarded marking line is harmful to the pavement surface structure [1,2]. Water-based paints were proposed as a way of compensating for the complexities of the hot melt paints construction. The main advantages of waterborne paints are: less volatility, better safety especially against fire risks and better hygiene conditions during production and application [3-5]. Water-based road-marking paints account for approximately 90% of all paints in the United States. The proportion in Australia is approximately 70% and in Europe is 15% [6]. Water-based paints are not recommended for construction at temperatures below 10°C. Despite significant effort, there are still many challenges with the use of water-based paints on asphalt pavement. For example, there is poor adhesion, water * Corresponding author E-mail address: [email protected] (R. Li). Peer review under responsibilit
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