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Properties of stone mastic asphalt incorporating nano titanium as binder’s modifier

Zali Nur Syafiqah Shamimi Mohd, Masri Khairil Azman, Jaya Ramadhansyah Putra, Abdullah Mohd Mustafa Al Bakri, Hasan Muzamir, Hasan Mohd Rosli Mohd, Jeż Bartłomiej, Nabiałek Marcin, Sroka Marek, Pietrusiewicz Paweł

Archives of Civil Engineering

2022

Vol. 68, nr 1

653--666

Stone mastic asphalt is a gap-graded mix and is usually related to its high bitumen content and its skeleton-like constitution. Although famous for its durability, high resistance to fatigue and rutting, issues such as bleeding and premature aging do occur in the mix since it has a high bitumen content and voids due to its gap-graded structure. In order to encounter these problems from affecting the mix, some instances such as adding additives, rejuvenators and stabilizers into the mixture has been implemented. Nowadays, nano materials are being used in the asphalt mixtures and nano titanium is being introduced as a modifier to the asphalt binder in order to improve the mechanical properties of the stone mastic asphalt mix. The related tests done in order to access the improvement are resilient modulus, dynamic creep, moisture susceptibility and binder drain down. The content of nano titanium used in this research are 1%, 2%, 3%, 4% and 5%. This study is done to assess the mechanical performance of stone mastic asphalt with nano titanium modified binder.

Moisture susceptibility of warm mix asphalt concrete containing synthetic zeolite

Róg A.

Structure and Environment

2015

Vol. 7, no. 1

20--25

The primary objective of this study was to perform a laboratory testing to determine the moisture sensitivity of an asphalt concrete produced in warm mix asphalt technology (WMA) with the addition of the synthetic zeolite. The usage of this technology may cause potential difficulties like the insufficient mixture compaction or undesirable impact of some WMA additives. One of the design assumptions was the potential adhesion problem. That is why the addition of hydrated lime was also evaluated as anti-stripping agent to WMA with the zeolite.