查看文章

Volatile organic compounds (VOCs) and particulate matter (PM) emissions are usually the main concerns of asphalt industry. This study reports the experimental results of the inhibition effect of geopolymer additives when incorporated in bitumen with the intention of reducing VOCs and PM emissions. The pore structure of the geopolymer additives and their adsorption technique were assessed. The effectiveness of two types of geopolymer additives (i.e. original and anhydrous) was evaluated according to their impact on bitumen conventional properties (i.e. softening point, penetration, SARA components analysis, and FTIR spectra), VOCs reduction and PM emissions levels.

According to thermogravimetry coupled with mass spectrometry (TG-MS) and particulate matter (PM) tests results, the addition of geopolymer reduced the VOCs and PM emissions during asphalt production, not only for warm mix asphalt (WMA …