@article{hosseini_alhomair_faeli_pour-ghaz_gabr_knappe_parker_2020, title={Degradation Model for the Tensile Strength of PVC and Rubber Gasket Materials Exposed to Benzene and PCE-Saturated Aqueous Solutions}, volume={2674}, ISSN={["2169-4052"]}, DOI={10.1177/0361198120906126}, abstractNote={ In this paper, a tensile strength degradation model is developed for polyvinyl chloride (PVC) pipe and three rubber gasket materials commonly used in stormwater drains and wet utilities; the degradation model considers exposure to a single contaminant at its saturation level. The contaminant considered included benzene and tetrachloroethylene (PCE) because of their prevalence. The materials considered are unplasticized Polyvinyl chloride (u-PVC) utilized as the pipe material, and three types of rubber gaskets: Polychloroprene (Neoprene-CR), Acrylonitrile (nitrile) butadiene rubber (Buna-N), and fluoroelastomer rubber (FKM—Grade A VitonTM). First, the degradation rates of these materials are experimentally quantified using accelerated testing; then using the experimental results and Williams–Landel–Ferry (WLF) method a degradation model is developed. Finally, a simplified method is introduced to relate the tensile strength degradation of PVC to the penetration rate of the contaminants. }, number={2}, journal={TRANSPORTATION RESEARCH RECORD}, author={Hosseini, Payam and Alhomair, Sultan and Faeli, Zahra and Pour-Ghaz, Mohammad and Gabr, Mohammed and Knappe, Detlef and Parker, Cyrus}, year={2020}, month={Feb}, pages={274–283} }
 @article{jahanbakhsh_hosseini_moghadas nejad_habibi_2019, title={Intermediate temperature fracture resistance evaluation of cement emulsified asphalt mortar}, volume={197}, ISSN={["1879-0526"]}, DOI={10.1016/j.conbuildmat.2018.11.170}, abstractNote={Cement emulsified asphalt mortar (CEAM) as part of the slab track system is subjected to various combinations of repeated train loading and varying environmental conditions leading to fatigue cracking. In this respect, this research examined the fatigue cracking resistance behavior of CEAM through various testing methods applying fracture mechanics. Experimental tests conducted (i.e. indirect tensile (IDT) strength and semicircular bending (SCB)) showed that the fracture parameters (i.e. displacement at fracture, fracture energy, and critical strain energy release rate) could properly evaluate the fatigue performance of CEAM and distinguish additives’ impact at intermediate temperature. Furthermore, correlation analysis was employed to investigate the effect of test-related factors (e.g. specimen size, specimen thickness, notch length, and loading rate) on the assessed fracture parameters and specifying the most suitable parameter for fatigue cracking resistance evaluation of CEAM. According to the results, although the displacement at fracture and fracture energy were capable to assess the fatigue cracking behavior of CEAM, they exhibited to be specimen size dependent. Additionally, results of experiments conducted on CEAM specimens possessing various sizes and geometries along with the correlation analysis indicated that the critical strain energy release rate (Jc) is a potentially feasible parameter to recognize the fatigue cracking resistance of CEAM as a material parameter as it is independent of specimen size and geometry.}, journal={CONSTRUCTION AND BUILDING MATERIALS}, author={Jahanbakhsh, Hamid and Hosseini, Payam and Moghadas Nejad, Fereidoon and Habibi, Mehran}, year={2019}, month={Feb}, pages={1–11} }
 @article{voss_hosseini_pour-ghaz_vauhkonen_seppanen_2019, title={Three-dimensional electrical capacitance tomography - A tool for characterizing moisture transport properties of cement-based materials}, volume={181}, ISSN={["1873-4197"]}, DOI={10.1016/j.matdes.2019.107967}, abstractNote={Water often plays a major role in the degradation processes of cement-based materials and structures, and thus the durability of these structures strongly depends on their ability to impede transport of water. This paper reports the results of imaging three-dimensional (3D) unsaturated moisture flow in mortar specimens using electrical capacitance tomography (ECT) imaging, which is based on non-intrusive and contact-free capacitance surface measurements. In a series of experiments, three mortar specimens with differing moisture transport properties were imaged with ECT during a 3D ingress of water. For comparison, we also modeled the flow of moisture numerically, by Finite Element Method (FEM) approximation of the 3D equation of unsaturated moisture flow in porous media, commonly referred to as Richard's equation. The ECT reconstructions are in good agreement with the flow model for all specimens which supports the ability of ECT to image 3D water transport in cement-based materials.}, journal={MATERIALS & DESIGN}, author={Voss, Antti and Hosseini, Payam and Pour-Ghaz, Mohammad and Vauhkonen, Marko and Seppanen, Aku}, year={2019}, month={Nov} }
 @article{moghadas nejad_habibi_hosseini_jahanbakhsh_2017, title={Investigating the mechanical and fatigue properties of sustainable cement emulsified asphalt mortar}, volume={156}, ISSN={["1879-1786"]}, DOI={10.1016/j.jclepro.2017.04.105}, abstractNote={With regard to the construction of high speed railways, the role of cement emulsified asphalt mortar (CEAM) is of crucial importance as a leveling and damping material. In this respect, there are many research studies on exploring the mechanical, durability, fatigue, and rheological characteristics of CEAM. Nonetheless, developing greener types of CEAMs would be of great interest for developing transportation infrastructures with low carbon footprint. Accordingly, the current study aims to evaluate the effects of partial replacement of cement with low pozzolanic activity ground granulated blast furnace slag (GGBFS) and silica fume (SF) on mechanical and fatigue performances of CEAM. In addition, a central composite design (CCD) with response surface methodology (RSM) was applied to the results to develop statistical models. The results obtained reveal that utilizing low pozzolanic activity GGBFS showed no significant effect on uniaxial compressive strength (UCS) and decreased the indirect tensile strength (IDT) slightly. Moreover, both UCS and IDT heightened through the inclusion of SF. As a result, the addition of SF would compensate for reduction in some mechanical properties caused by GGBFS with low pozzolanicity. Furthermore, based on the results, semi-circular bending (SCB) test properly differentiated the effects of cement replacement with GGBFS and SF on fatigue resistance of CEAM.}, journal={JOURNAL OF CLEANER PRODUCTION}, author={Moghadas Nejad, Fereidoon and Habibi, Mehran and Hosseini, Payam and Jahanbakhsh, Hamid}, year={2017}, month={Jul}, pages={717–728} }