Search Results - "Khedmati, Mahdieh"
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Effects of Na2O/SiO2 molar ratio on properties of aggregate-paste interphase in fly ash-based geopolymer mixtures through multiscale measurements
Published in Construction & building materials (10-12-2018)“…•The effects of Na2O/SiO2 molar ratio on the interphase of geopolymer was studied.•The interphase presents more N-A-S-H gel than adjacent paste regardless of…”
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Multiscale Characterization to Examine the Effects of Aggregate Properties on Aggregate-Paste Interphase in Cement Concrete Mixtures
Published in Journal of materials in civil engineering (01-04-2020)“…AbstractThis study aims to test the effects of aggregate properties on the features of aggregate-paste interphase in portland cement concrete mixtures. The…”
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Microstructure evolution during spark plasma sintering of FJS‐1 lunar soil simulant
Published in Journal of the American Ceramic Society (01-02-2020)“…A spark plasma sintering (SPS) process has been explored to densify FJS‐lunar soil simulants for structural applications in space explorations. The effect of…”
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Two-Way Linked Multiscale Method Integrated with Nanomechanical Tests and Cohesive Zone Fracture to Model Highly Heterogeneous Binding Materials
Published in Journal of engineering mechanics (01-10-2018)“…AbstractThis paper presents a two-way linked multiscale method that is integrated with nanomechanical tests and a cohesive zone fracture model to investigate…”
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Effect of Softening Additives on the Moisture Susceptibility of Recycled Bituminous Materials Using Chemical-Mechanical-Imaging Methods
Published in Journal of materials in civil engineering (01-09-2018)“…AbstractThis study examined the effects of softening additives on the moisture susceptibility of recycled bituminous materials using chemical, mechanical, and…”
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Using Crude Vegetable-Based Oils and Antioxidants to Improve the Performance of Asphalt Binders
Published in Transportation research record (01-10-2023)“…Vegetable-based oils have been the center of attention in research on reclaimed asphalt pavement in recent years, since they are sustainable sources of…”
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Investigating the Field Performance of High- Recycled Asphalt Pavement Mixtures with Bio-oil Recycling Agent
Published in Transportation research record (01-10-2024)“…The use of recycling agents (RAs), along with recycled asphalt pavement (RAP) modifiers, has been increasing over recent years. However, the field performance…”
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Aging characterization of asphalt binders through multi-aspect analyses: A critical review
Published in Fuel (Guildford) (15-11-2024)“…[Display omitted] •This paper summarizes diverse perspectives from researchers on binder aging.•This paper explores binder aging’s chemical, morphological, and…”
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Investigation of the interphase between recycled aggregates and cementitious binding materials using integrated microstructural-nanomechanical-chemical characterization
Published in Composites. Part B, Engineering (01-02-2019)“…The mixtures including crushed recycled aggregates have multiple complex aggregate/paste interphase regions compared to conventional concrete mixtures, which…”
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An integrated microstructural-nanomechanical-chemical approach to examine material-specific characteristics of cementitious interphase regions
Published in Materials characterization (01-04-2018)“…Effective properties and structural performance of cementitious mixtures are substantially governed by the quality of the interphase region because it acts as…”
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Spark plasma sintering of a lunar regolith simulant: effects of parameters on microstructure evolution, phase transformation, and mechanical properties
Published in Ceramics international (15-02-2021)“…The spark plasma sintering (SPS) process is a potentially effective in-situ resource utilization (ISRU) technology for consolidating lunar regolith in order to…”
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Strain Sweep Fatigue Testing of Sand Asphalt Mortar to Investigate the Effects of Sample Geometry, Binder Film Thickness, and Testing Temperature
Published in Transportation research record (01-10-2021)“…This study evaluated the viscoelastic fatigue behavior of binder using strain sweep fatigue testing of cylindrical sand asphalt mortar (SAM) samples. The SAM…”
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Adhesion between steel slag aggregates and bituminous binder based on surface characteristics and mixture moisture resistance
Published in Construction & building materials (20-12-2020)“…•Binder-slag adhesion assessment based on small scale characterization.•Air-cooled blast furnace (ACBFS) slag and Linz-Donawitz (LD) slag were…”
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Multiscale Characterization of Cementitious Interphase Regions Using an Integrated Microstructural-Mechanical-Chemical Approach
Published 01-01-2019“…Effective properties and structural performance of cementitious mixtures are substantially governed by the quality of the interphase region because it acts as…”
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Dissertation