THE EFFECT OF WMA ADDITIVE ON BASIC PROPERTIES OF 35/50 AND 50/70 FOAMED ROAD BITUMEN
Journal Title: Structure and Environment - Year 2019, Vol 11, Issue 2
Abstract
The need to use asphalt additives along with the reduction in the temperatures of asphalt mixes results mainly from the need to ensure the durability of asphalt pavements. The use of foamed asphalt for warm mix asphalt (WMA) enables reducing the temperatures of asphalt mixes by approx. 30–40°C in relation to traditional hot mix asphalt. The article presents an analysis of the impact of a liquid chemical additive that is currently used in the WMA technology on changes in foamed asphalt properties. The assessment embraced the basic features of bitumens and the parameters of the asphalt foam manufactured based on them. The base bitumen used in the testing included road asphalt 35/50 and 50/70, whereas the modification of their properties was carried out using the WMA additive content of 0.3% to 0.6% in relation to the asphalt mass. The asphalt foam parameters were measured after foaming at 155°C and with the foaming water content (FWC) of 1.5% to 3.5% with increments of 1.0%.
Authors and Affiliations
Anna Chomicz-Kowalska, JOANNA BARTOS, KRZYSZTOF MACIEJEWSKI, Eva REMISOVA, JOZEF KOMACKA, MICHAL HOLY
Keywords
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- EP ID EP626560
- DOI 10.30540/sae-2019-010
- Views 90
- Downloads 0
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