Rocha Segundo Iran, Landi Salmon, Margaritis Alexandros, Pipintakos Georgios, Freitas Elisabete, Vuye Cedric, Blom Johan, Tytgat Tom, Denys Siegfried, Carneiro Joaquim
Department of Civil Engineering, University of Minho, 4800-058 Guimarães, Portugal.
Federal Institute Goiano, Rio Verde 75901-970, Brazil.
Nanomaterials (Basel). 2020 Oct 28;10(11):2152. doi: 10.3390/nano10112152.
Transparent binder is used to substitute conventional black asphalt binder and to provide light-colored pavements, whereas nano-TiO has the potential to promote photocatalytic and self-cleaning properties. Together, these materials provide multifunction effects and benefits when the pavement is submitted to high solar irradiation. This paper analyzes the physicochemical and rheological properties of a transparent binder modified with 0.5%, 3.0%, 6.0%, and 10.0% nano-TiO and compares it to the transparent base binder and conventional and polymer modified binders (PMB) without nano-TiO. Their penetration, softening point, dynamic viscosity, master curve, black diagram, Linear Amplitude Sweep (LAS), Multiple Stress Creep Recovery (MSCR), and Fourier Transform Infrared Spectroscopy (FTIR) were obtained. The transparent binders (base and modified) seem to be workable considering their viscosity, and exhibited values between the conventional binder and PMB with respect to rutting resistance, penetration, and softening point. They showed similar behavior to the PMB, demonstrating signs of polymer modification. The addition of TiO seemed to reduce fatigue life, except for the 0.5% content. Nevertheless, its addition in high contents increased the rutting resistance. The TiO modification seems to have little effect on the chemical functional indices. The best percentage of TiO was 0.5%, with respect to fatigue, and 10.0% with respect to permanent deformation.
透明粘结剂用于替代传统的黑色沥青粘结剂，以提供浅色路面，而纳米二氧化钛具有促进光催化和自清洁性能的潜力。当路面受到高强度太阳辐射时，这些材料共同提供了多功能效果和益处。本文分析了添加0.5%、3.0%、6.0%和10.0%纳米二氧化钛的透明粘结剂的物理化学和流变性能，并将其与未添加纳米二氧化钛的透明基础粘结剂、传统粘结剂和聚合物改性粘结剂（PMB）进行比较。获得了它们的针入度、软化点、动态粘度、主曲线、黑图、线性振幅扫描（LAS）、多重应力蠕变恢复（MSCR）和傅里叶变换红外光谱（FTIR）。考虑到其粘度，透明粘结剂（基础粘结剂和改性粘结剂）似乎是可行的，并且在抗车辙性、针入度和软化点方面表现出介于传统粘结剂和聚合物改性粘结剂之间的值。它们表现出与聚合物改性粘结剂相似的行为，显示出聚合物改性的迹象。除了0.5%的含量外，添加二氧化钛似乎会降低疲劳寿命。然而，高含量添加二氧化钛会提高抗车辙性。二氧化钛改性似乎对化学功能指标影响不大。就疲劳而言，二氧化钛的最佳添加比例为0.5%，就永久变形而言为10.0%。
