Abstract
Microsurfacing is a standard preventive maintenance technology developed on the basis of slurry sealing technology. However, the high temperature and rainy season in Guangdong Province affect its expanded application because of its low water resistance and short service life. So, high-performance microsurfacing, a new microsurfacing technology, has been developed. The key to this technique is an appropriate proportion of water-based epoxy resin and waterborne epoxy curing agent, which could generate a chemical reaction to form a high-performance bonding network structure of space. And indoor wet-wheel wear test shows that its antiwear ability and resistance to water damage are evidently increased (to over 50%) compared with the conventional microsurfacing. Furthermore, from the long-term road performance results, the antisliding and water resistance performance of high-performance microsurfacing is much higher than the conventional technique.
Highlights
Microsurfacing technology is an economical, efficient, and effective technique to prevent pavement, which has a good effect on preventing the pavement from loosening, delaying the aging of pavement, increasing the friction, and keeping the stability of the pavement [1,2,3,4]
Aiming at the conventional microsurfacing shortcomings of poor abrasion resistance and short service life in a rainy place, this paper presents a new type of microsurfacing technology, high-performance microsurfacing. e core of this new technology is products called water-based epoxy resin and water-based epoxy curing agent, which make the chemical reactions at room temperature
Test results of the 1H wet-wheel wear test about different mixing amounts of waterborne epoxy additives are shown in Figure 2. e following conclusions can be obtained according to Figure 2: (1) Compared with conventional microsurfacing, the wear resistance of the microsurfacing with different proportions of waterborne epoxy additives was significantly improved. e reason may be as follows: the water-based epoxy resin and waterborne epoxy curing agent will create a chemical reaction, which increases aggregate and asphalt’s bonding ability
Summary
Microsurfacing technology is an economical, efficient, and effective technique to prevent pavement, which has a good effect on preventing the pavement from loosening, delaying the aging of pavement, increasing the friction, and keeping the stability of the pavement [1,2,3,4]. E core of this new technology is products called water-based epoxy resin and water-based epoxy curing agent, which make the chemical reactions at room temperature It would create a space-net structure with high adhesion performance, which significantly improves the wear resistance of microsurfacing [5,6,7,8]. Indoor wet abrasion test and accelerated loading test show that the high-performance microsurfacing has excellent abrasion resistance and antiwater damage ability. It would significantly improve microsurfacing’s wear resistance and service life, which has a good application prospect [9,10,11,12,13,14]. Grey modeling theory [21,22,23,24,25,26] is used most
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