Hot Mix Asphalt Additives
Liquid anti-stripping asphalt additives or adhesion promoters are chemicals added to asphalt to improve aggregate coating and increase the strength and frequency of chemical bonding between asphalt and aggregate. The increased bonding strength provides pavements with defense against moisture damage destruction, when asphalt detaches from aggregate in the presence of water. Moisture damage, if not guarded against, causes rutting, potholes and ultimately pavements to fail prematurely.
Liquid anti-strip additives are added in small amounts to asphalt, usually around 0.25 – 0.50% by weight. They have easy handling characteristics and can be added to asphalt in a number of convenient ways by either the asphalt terminal or the hot mix producer. Liquid anti-strips benefit agencies, commerce and the motorist public by helping to ensure pavements meet design life durations, experience less frequent repairs causing fewer motorist user delays, and provide improved safety and ride experience.
Road Science has been the North American leader in liquid anti-strip manufacturing and innovation for the past several decades. Our portfolio includes three distinct product lines, each with specific product features and advantages.