Abstract
A poor bond between the layers constituting an asphalt pavement can cause structural problems such as slippage, delamination, and top-down cracking. These are consequences of the pavement being unable to act as a continuous element and to properly transmit the effects of the traffic to underlying layers. The aim of this research was to characterize an asphalt emulsion with low asphalt content using the Mexican standard and to evaluate its performance through the Laboratorio de Caminos de Barcelona (LCB) shear testing. Cationic slow setting (SS) and cationic rapid setting (RS) asphalt emulsions were tested by varying the asphalt contents, dosages, and cure times. The slow set emulsions presented a greater fracture energy than did the rapid set emulsions; a dose of 0.3 L/m2 provided the same level of resistance as a 0.5 L/m2 dose; and a 55% asphalt content provided greater resistance than the 60% asphalt content.
Highlights
Asphalt pavements are widely used due to their characteristics, advantages, and versatility [1].as a way of making pavements more economical, less polluting, and with less energy consumption, emulsions can be used; these are dispersed systems made up of two immiscible liquids [2] united by an emulsifier
We proposed that tack coats are not sufficiently taken into consideration in most pavement procedures, and acceptable bonding is not always achieved, as affirmed in reference [26]
The results show that the rapid setting emulsion with different of and showthat thatthe therapid rapidsetting settingemulsion emulsionwith withdifferent differentdosages dosagesof ofasphalt asphaltand andsetting settingtimes timespresented presented show dosages asphalt setting times presented less resistance to applied loads in comparison to the slow setting emulsion, with the exception of the less resistance to applied loads in comparison to the slow setting emulsion, with the exception the less resistance to applied loads in comparison to the slow setting emulsion, with the exception ofofthe
Summary
As a way of making pavements more economical, less polluting, and with less energy consumption, emulsions can be used; these are dispersed systems made up of two immiscible liquids [2] united by an emulsifier. Additive components such as stabilizers, adhesion enhancers, coating enhancers, or breakage control agents could be part of these [3]. We proposed that tack coats are not sufficiently taken into consideration in most pavement procedures, and acceptable bonding is not always achieved, as affirmed in reference [26]. This process can occur in at someintersections, particular points of the with road ascendant where theor horizontal loads increase
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