1. The main difference between slow setting and medium setting of emulsified asphalt
The main difference between slow setting and medium setting of emulsified asphalt lies in the demulsification speed and applicable scenarios.
(1) Definition and Characteristics
Slow setting emulsified asphalt: Slow setting emulsified asphalt has a slower demulsification speed, and the emulsified asphalt can maintain a stable state for a longer period of time. It is suitable for projects that require longer construction time, such as slurry sealing, micro surfacing, etc. It has good storage and mixing properties, suitable for the maintenance of high-grade highways.
Medium setting emulsified asphalt: The demulsification speed of medium setting emulsified asphalt is moderate, which can maintain the emulsified state for a certain period of time, facilitate construction operations, have good adhesion with stones, and form a road surface with high strength. It is widely used in road construction and maintenance projects.
(2) Scope of application and advantages and disadvantages
Slow setting emulsified asphalt: suitable for high humidity and high rainfall areas, such as southern regions. Its advantage is strong water resistance, which can extend the service life of the road surface, but its disadvantage is high cost.
Medium setting emulsified asphalt: suitable for low rainfall and low humidity areas, such as northern regions. Its advantage is lower cost, but its service life is relatively short.
(3) Specific application scenarios
Slow setting emulsified asphalt: mainly used for slurry sealing, micro surfacing and other projects that require a long construction time, suitable for the maintenance of high-grade highways. Slow setting and fast curing asphalt emulsifier has a fast solidification speed during use, which can achieve the effect of fast solidification and opening up traffic, and can open up traffic within 1 hour.
Medium setting emulsified asphalt: widely used in road construction and maintenance projects, suitable for various road construction needs.
In summary, slow setting and medium setting emulsified asphalt have different demulsification speeds, applicable ranges, and specific application scenarios. When selecting, it should be based on specific needs and environmental conditions.
2. Introduction to slow setting and fast curing asphalt emulsifier
The RA713 slow setting and fast curing asphalt emulsifier developed by Longton Highway is a cationic slow setting and fast curing composite asphalt emulsifier with excellent asphalt emulsification ability, which does not require adjusting the pH value during use. It has a wide applicability to asphalt, sufficient mixing time for high activity stone materials, good molding effect, and can be used as cold recycled emulsified asphalt, BCR, SBS modified emulsified asphalt.
3. Usage method of slow setting and fast curing asphalt emulsifier
It can be pumped at temperatures above 20 ° C. When in use, it can be directly added to hot water at 60-70 ° C and stirred until completely dissolved.
4. Application process of slow setting and fast curing asphalt emulsifier
Slow setting and fast curing asphalt emulsifiers are mainly used for cold regeneration, micro surfacing, and slurry sealing construction.
5. Main technical indicators
(1) Appearance: Red viscous liquid
(2) Active ingredient content: 50%
(3) PH value: 2.0~5.0
(4) Dosage: 1.8% -2.2% (physical addition amount, base asphalt) 2.0% -2.5% (physical addition amount, modified asphalt)
(5) Packaging: 200kg/drum
