Payam Hosseini

• PhD
• Senior Research Engineer at Turner-Fairbank Highway Research Center

Calcite particles coated with nano-silica find use in applications such as enhanced oil recovery, paper-making, and thermal energy storage. In this study, the surface coating of calcite particles by silica nanoparticles (nano-SiO2) in aqueous solutions assisted by a CO2 environment was investigated. The result indicates that the coating performance...

Once installed, underground concrete pipes with rubber gaskets might be exposed to contaminated soil and groundwater. A pipe material monitoring capsule (PMMC) has been developed to evaluate volatile organic compounds (VOCs) breaking through three types of pipe gaskets; Neoprene, Buna-N, and Viton. The PMMCs were deployed in three contaminated site...

Cement-based materials have always been the main choice for the construction of civil engineering infrastructures [...]

Diffusion of highly volatile organic compounds (VOCs) through buried concrete infrastructure components, such as pipes and culverts, can occur if these components come in contact with contaminated groundwater or soil. Among various VOCs, benzene and tetrachloroethylene (PCE), are the most common contaminants. This paper aims at measuring the effect...

In this study, sustainable mixture designs of three concrete types, including fly ash concrete, silica fume concrete, and ground granulated blast furnace slag concrete, were investigated. To this end, the compressive strength formulas of each concrete type made with supplementary cementitious materials were obtained by introducing a new machine lea...

Magnesium sulfate (MgSO4) is a salt that has the potential to damage portland cement-based materials. This paper argues that the mechanism of damage is dependent on the concentration of MgSO4 and reports the results of the change in the micromechanical properties of calcium-silicate-hydrate (C-S-H) when exposed to different MgSO4 concentrations . D...

Analyses presented herein explore transport aspects related to benzene breakthrough into gasketed subsurface concrete pipe embedded in an unsaturated soil profile. A series of three-dimensional numerical analyses were conducted using the T2VOC code. The simulations yielded results on multiphase multicomponent transport providing insights onto the e...

Work in this paper investigates the efficacy of mitigation measures to minimize the contaminant ingress into subsurface concrete pipes. The 3D study model of the concrete pipe and the soil domain are implemented in Visual MODFLOW version 6.1. The site parameters are developed from data for a site in Jacksonville, North Carolina, at which subsurface...

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)...

Concrete is the most used materials in the construction industry known as an environmental pollutant, posing enormous challenges for sustainability regarding resource depletion, energy consumption, and greenhouse gas emission. Therefore, efforts need to be focused on the reduction of environmental impacts of concrete to boost its sustainability. To...

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...

The objective of this study was to evaluate the potential of contamination by the aqueous benzene through transport in a saturated soil domain supporting subsurface concrete pipe. The focus of the study was on assessing the potential for benzene to migrate through concrete pipe and/or its joints (gaskets) for both intact and damaged conditions. A t...

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...

The aim of the present study was to investigate the effect of combination of ground granulated blast furnace slag (GGBFS) with low pozzolanic activity index and nanosilica as a highly reactive pozzolan on different properties of cement mortar applicable for architectural purposes. The properties studied include mechanical performances (in terms of...

This study investigates the effect of small dosages of nanosilica (0.5 and 1.5% of the total binder) on physical, mechanical, durability, and microstructural properties of green cement paste containing sewage sludge ash (SSA) with low pozzolanic activity. Experimental results revealed that hardened performances of cement pastes were reduced signifi...

Abstract: The present study explored the influence of two types of nanosilica hydrosols (with different specific surface areas of 100 and 300 m2=g) on short-term mechanical, durability, and microstructural properties of white portland cement mortar containing low-activity blast furnace slag (ASTM C989 Grade 80). Accordingly, various tests, includin...

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...

The properties of self-compacting concrete (SCC) can be manipulated by the addition of nano-montmorillonite (NMMT) clays. This paper presents the results of an experimental investigation on incorporating small dosages of NMMT clays (.25, .50, .75 and 1.00% addition by mass of total cementitious material) into SCC. Tests were conducted on fresh and...

The aim of this study was to evaluate the effects of applying low replacement ratios (0.75% and 1.50% of the binder weight) of nano-SiO2 particles with different specific surface areas (200 and 380 m2/g) on the properties of high-performance concrete (HPC). Mechanical (compressive and splitting tensile strengths), electrical resistivity, non-destru...

The aim of the present study was to investigate the effect of pyrogenic nanosilica with different specific surfaces areas (200 and 380 m2/g) on mechanical properties of fiber-reinforced high-performance concrete (FRHPC) produced with two different types of fibers including steel and polypropylene fibers. Accordingly, different mechanical tests (com...

Self-compacting concrete (SCC) is a highly-workable concrete that without any vibration or impact and under its own weight fills the formwork, and it also passes easily through small spaces between rebars. In this paper, the effect of steel fibers on rheological properties, compressive strength, splitting tensile strength, flexural strength, and fl...

Developments in the field of green cement-based products are characterized as an important approach to sustainable development and are being devoted much attention by the construction industry. Numerous types of materials are utilized; however, based on other published studies, the use of waste material as a filler normally deteriorates the perform...

The relatively new applications of superabsorbent polymers (SAPs) in cement based materials call for investigations regarding their behaviors in relation to other constituents in the system. Colloidal silica nanoparticles (CS) are becoming increasingly important for the improvement of strength and durability of cement based materials. In this study...

The application of superabsorbent polymer (SAP) as an internal curing agent for cement based composites results in benefits such as reduced autogenous shrinkage and cracking. However, a reduction in compressive and flexural strength usually occurs due to the empty voids remained in the matrix after deswelling of SAP particles. Nanoparticles are goo...

In this study, effects of replacing cement with colloidal amorphous silica nano-particles have been experimentally investigated on the physical and mechanical properties, durability and microstructure of concrete. Experimental results include workability, fresh concrete density, and hardened concrete properties like compressive strength at differen...

a b s t r a c t The environmental impact of asbestos fibers on human health and their consequent safety-related prob-lems indicate that there is a significant need to replace this material in all asbestos-containing products. Many different types of fibers have been introduced to replace asbestos fibers. In this study, the performance of silica nan...

Floating urbanization could be the subject of a green flood mitigation strategy. The main part of any floating house is the buoyant part, which is made from concrete pontoons. Aggregates play the most important role in making concrete a lightweight material. Oil Palm Shell (OPS) is an agricultural waste material, which is widely available in South...

Nowadays, the development of nanotechnology is faster than before due to its interdisciplinary nature. Other branches of engineering have started employing this technology in the process of their development; one example would be concrete science and technology. Nearly a decade has passed since the first application of nano-particles in a matrix of...

Nowadays, applying sustainable development strategies in designation and production of various products has attracted specific attention. In order to consider ecological sustainable development for a product, reducing its environmental impacts should be observed. Concrete technology and its products are not exceptions, and therefore, the same has b...

In this study the mechanical properties (by compressive and flexural strength tests), durability (by water absorption test), and microstructural properties of interfacial transition zone (ITZ) (by Scanning Electron Microscopy and Atomic Force Microscopy tests) of mortars applicable for the casting of ferrocement elements reinforced with nano-SiO2 p...

Because of their unique physical and chemical properties, nanoparticles have been gaining increasing attention and have been used in many fields to fabricate new materials with novel functions. If nanoparticles are integrated with cement-based building materials, the new materials might possess some outstanding properties. Ferrocement is a type of...

Concretes made by the recycled aggregates are one of the green concrete subgroups. Reuse of construction demolitions in order to produce construction materials has become one of the most important parameters in the development of green concrete industry, regarding to solving the environmental complexities and ecological problems [1]. Besides, devel...

The purpose of this paper is to provide new type of recycled aggregate concrete (RAC) incorporating nano-SiO2. In particular, we investigate the effects of colloidal nano-silica solution on the properties of fresh and hardened concrete. The main variables included the dosage of nano-silica (including 0%, 1.5%, and 3% of cement content) and the ceme...