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Water and frost resistance of gap - graded asphalt modified with the SBS polymer and hydrated lime

Iwański M., Pobocha M.

Foundations of Civil and Environmental Engineering

2008

No. 11

29-36

Gap - graded asphalt (MNU) has high resistance to the traffic, however, due to its specific grading it is more prone to a destructive effect of the climatic factors compared to other bituminous mixes. In order to ensure its durability, the mixture was modified with the use of the SBS polymer and hydrated lime. Asphalt was modified with the addition of 2, 4, 6, 8 % of the SBS polymer, while hydrated lime was dispensed in the filler in the amounts 10, 20, 30, 40 and 50 %. The performed research into the resistance of MNU to high and low temperatures as well as to water and frost showed a positive impact of the two modifiers on the durability and high mechanical properties of MNU.

The effectiveness of hydrated lime as asphalt concrete additive

Jaskuła P.

Foundations of Civil and Environmental Engineering

2007

No. 10

99-109

This paper evaluates the effectiveness of hydrated lime as an additive to asphalt concrete based on laboratory, as well as field tests carried out on the rest section. The research included testing of the resistance to the action of water and frost and to permanent deformation, as well as establishing of pavement condition survey parameters, including transverse profile and skid resistance on the test section constructed with asphalt mixtures containing hydrated lime or liquid antistripping additive. It was established that hydrated lime may be added to asphalt concrete mixtures as an alternative to chemical antistripping additives.