Works (21)

Updated: November 19th, 2024 01:20

2024 journal article

Asphalt binder characterization using waveform-based viscoelastic measures and time-temperature superposition principle under large strains

CONSTRUCTION AND BUILDING MATERIALS, 438.

By: S. Gulzar* & S. Underwood

author keywords: Viscoelasticity; Asphalt; Nonlinearity; Time-Temperature Superposition; Waveform; LAOS
Sources: ORCID, Web Of Science, NC State University Libraries
Added: July 1, 2024

2024 journal article

Evaluation of Alternative Approaches to Restore the Rheology of Recycled Asphalt Binders

Transportation Research Record: Journal of the Transportation Research Board, 3.

By: A. Fried n, I. Boz*, J. Preciado n, S. Gulzar n, B. Underwood n, C. Castorena n, J. Habbouche*

author keywords: infrastructure; materials; binders; asphalt binder aging; asphalt binder modifiers
Sources: ORCID, Web Of Science, NC State University Libraries, Crossref
Added: April 1, 2024

2024 journal article

Linear viscoelastic, viscoplastic, and damage characterization of recycled asphalt binders and mixtures containing recycling agents with long-term aging

Mechanics of Time-Dependent Materials, 6.

By: L. Xue n, S. Gulzar n & C. Castorena n

author keywords: Asphalt; Reclaimed asphalt pavement; Recycled asphalt shingles; Recycling agents; Long-term aging; Sustainability
Sources: ORCID, Web Of Science, NC State University Libraries, Crossref
Added: July 1, 2024

2024 journal article

Low-Temperature Performance Evaluation of Recycled Binder Blends for Assessing Recycling Agents’ Acceptance

Journal of Materials in Civil Engineering, 36(9).

author keywords: Recycling agents (RAs); Reclaimed asphalt pavement (RAP); Asphalt binder; Low-temperature performance
Sources: Web Of Science, NC State University Libraries, Crossref
Added: July 30, 2024

2024 journal article

Performance Assessment of High Reclaimed Asphalt Pavement Asphalt Mixtures with Recycling Agents

Transportation Research Record: Journal of the Transportation Research Board, 4.

By: J. Preciado n, S. Gulzar n, C. Castorena n, B. Underwood n, J. Habbouche* & I. Boz*

author keywords: infrastructure; materials; asphalt materials; selection and mix design; asphalt mixture additives; asphalt mixture evaluation and performance; asphalt mixture performance tests
Sources: ORCID, Web Of Science, NC State University Libraries, Crossref
Added: April 8, 2024

2024 journal article

Phenomenological modeling of aging and rejuvenation on asphalt binder fatigue characteristics

Construction and Building Materials, 425, 135929.

By: S. Gulzar n, L. Xue n, J. Preciado n, A. Fried n, C. Castorena n, B. Underwood n, J. Habbouche*, I. Boz*

author keywords: Asphalt Binder; Fatigue; Linear Amplitude Sweep; Performance Index; Recycling Agent; Aging; Rejuvenation
Sources: Web Of Science, NC State University Libraries, Crossref
Added: May 28, 2024

2023 journal article

An investigation into the nonlinear rheological behavior of modified asphalt binders using large amplitude oscillatory shear rheology

International Journal of Pavement Engineering, 24(1).

By: S. Gulzar n, C. Castorena n & S. Underwood n

Contributors: S. Gulzar n, C. Castorena n & S. Underwood n

author keywords: Asphalt; nonlinear viscoelasticity; rheology; time-temperature superposition; large strains; LAOS
Sources: Web Of Science, ORCID, NC State University Libraries, Crossref
Added: June 5, 2023

2023 journal article

Benchmarking Recycled Binder Blends Using Statistical Analysis: A Case Study of Virginia and North Carolina

Transportation Research Record: Journal of the Transportation Research Board, 2678(3), 50–65.

By: J. Preciado n, S. Gulzar n, A. Fried n, C. Castorena n, B. Underwood n, J. Habbouche*, I. Boz*

Contributors: J. Preciado n, S. Gulzar n, A. Fried n, C. Castorena n, B. Underwood n, J. Habbouche*, I. Boz*

author keywords: infrastructure; materials; binders; asphalt binder modifiers; binder specifications; high-temperature binder testing; low-temperature binder testing
Sources: ORCID, Web Of Science, NC State University Libraries, Crossref
Added: July 19, 2023

2023 journal article

Towards sustainable roads: A State-of-the-art review on the use of recycling agents in recycled asphalt mixtures

Journal of Cleaner Production, 406, 136994.

Contributors: S. Gulzar n, A. Fried n, J. Preciado n, C. Castorena n, S. Underwood n, J. Habbouche*, I. Boz*

author keywords: RAP; Asphalt; Recycling agent; Pavement; Recycling; Sustainability
Sources: Web Of Science, NC State University Libraries, ORCID, Crossref
Added: April 6, 2023

2022 journal article

Evaluation of Recycling Agent and Extender Dosage Selection Procedures to Restore the High-Temperature Climatic Performance Grade

Transportation Research Record: Journal of the Transportation Research Board, 2676(6), 302–314.

By: A. Fried n, L. Xue n, S. Gulzar n, J. Preciado n, B. Underwood n & C. Castorena n

Contributors: A. Fried n, L. Xue n, S. Gulzar n, J. Preciado n, B. Underwood n & C. Castorena n

author keywords: infrastructure; materials; binders; asphalt binder modifiers
UN Sustainable Development Goal Categories
13. Climate Action (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries, Crossref
Added: February 6, 2022

2022 journal article

Evaluation of Structural Performance of Pavements under Extreme Events: Flooding and Heatwave Case Studies

Transportation Research Record: Journal of the Transportation Research Board, 2676(7), 233–248.

By: N. Matini n, S. Gulzar n, S. Underwood n & C. Castorena n

Contributors: N. Matini n, S. Gulzar n, S. Underwood n & C. Castorena n

author keywords: infrastructure; pavements; design and rehabilitation of asphalt pavements; pavement performance modeling; sustainability and resilience; natural hazards and extreme weather events; extreme weather events; sustainable and resilient pavements; resilient pavements
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure (OpenAlex)
13. Climate Action (Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries, Crossref
Added: March 10, 2022

2021 journal article

Novel Index for Vulnerability Assessment of Flexible Pavement Infrastructure to Temperature Rise: Case Study of Developing Countries

Journal of Infrastructure Systems, 28(1).

By: S. Gulzar n, B. Goenaga n & B. Underwood n

Contributors: S. Gulzar n, B. Goenaga n & B. Shane Underwood n

author keywords: Vulnerability; Infrastructure; Climate change; Developing countries; Binder grade; Flexible pavements
Sources: Web Of Science, ORCID, NC State University Libraries, Crossref
Added: February 28, 2022

2021 journal article

Review From Multiple Perspectives for the State of the Practice on the Use of Recycled Asphalt Materials and Recycling Agents in Asphalt Concrete Surface Mixtures

Transportation Research Record: Journal of the Transportation Research Board, 2676(4), 407–420.

By: J. Habbouche*, I. Boz*, B. Underwood n, C. Castorena n, S. Gulzar n, A. Fried n, J. Preciado n

Contributors: J. Habbouche*, I. Boz*, B. Underwood n, C. Castorena n, S. Gulzar n, A. Fried n, J. Preciado n

author keywords: state of the practice; asphalt concrete; recycling agent; RAP; RAS; specifications; performance; implementation; permissibility; usage; design
Sources: ORCID, Web Of Science, NC State University Libraries, Crossref
Added: December 15, 2021

2020 journal article

COVID-19, Uncertainty, and the Need for Resilience-Based Thinking in Pavement Engineering

Journal of Transportation Engineering, Part B: Pavements, 147(1), 02520001.

By: S. Gulzar n, Y. Kim n, C. Castorena n & B. Underwood n

Contributors: S. Gulzar n, Y. Richard Kim n, C. Castorena n & B. Shane Underwood n

UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
14. Life Below Water (Web of Science)
15. Life on Land (Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID, Crossref
Added: August 9, 2021

2020 journal article

Combined effect of waste polymer and rejuvenator on performance properties of reclaimed asphalt binder

Construction and Building Materials, 268, 121059.

By: D. Daryaee*, M. Habibpour*, S. Gulzar n & B. Underwood n

Contributors: D. Daryaee*, M. Habibpour*, S. Gulzar n & B. Underwood n

author keywords: RAB; LAS; Time sweep; MSCR; Waste polymer; Rejuvenator
Sources: Web Of Science, NC State University Libraries, ORCID, Crossref
Added: February 8, 2021

2020 conference paper

Fourier transform rheology of asphalt binders

Advances in Materials and Pavement Performance Prediction II - Contributions to the 2nd International Conference on Advances in Materials and Pavement Performance Prediction, AM3P 2020, 427–431. http://www.scopus.com/inward/record.url?eid=2-s2.0-85117414974&partnerID=MN8TOARS

By: S. Gulzar & S. Underwood

Contributors: S. Gulzar & S. Underwood

Source: ORCID
Added: February 7, 2024

2020 conference paper

Large amplitude oscillatory shear of modified asphalt binder

Advances in Materials and Pavement Performance Prediction II - Contributions to the 2nd International Conference on Advances in Materials and Pavement Performance Prediction, AM3P 2020, 432–435. http://www.scopus.com/inward/record.url?eid=2-s2.0-85117372082&partnerID=MN8TOARS

By: S. Gulzar & S. Underwood

Contributors: S. Gulzar & S. Underwood

Source: ORCID
Added: April 1, 2024

2020 journal article

Nonlinear Viscoelastic Response of Crumb Rubber Modified Asphalt Binder Under Large Strains

Transportation Research Record: Journal of the Transportation Research Board, 2674(3), 139–149.

By: S. Gulzar n & B. Underwood n

Contributors: S. Gulzar n & B. Underwood n

Sources: Web Of Science, NC State University Libraries, ORCID, Crossref
Added: March 23, 2020

2020 conference paper

Stress decomposition of nonlinear response of modified asphalt binder under large strains

Advances in Materials and Pavement Performance Prediction II - Contributions to the 2nd International Conference on Advances in Materials and Pavement Performance Prediction, AM3P 2020, 436–440. http://www.scopus.com/inward/record.url?eid=2-s2.0-85117403644&partnerID=MN8TOARS

By: S. Gulzar & S. Underwood

Contributors: S. Gulzar & S. Underwood

Source: ORCID
Added: April 1, 2024

2020 journal article

Uncertainty Quantification of Simplified Viscoelastic Continuum Damage Fatigue Model using the Bayesian Inference-Based Markov Chain Monte Carlo Method

Transportation Research Record: Journal of the Transportation Research Board, 2674(4), 247–260.

By: J. Ding n, Y. Wang n, S. Gulzar n, Y. Kim n & B. Underwood n

Contributors: J. Ding n, Y. Wang n, S. Gulzar n, Y. Kim n & B. Underwood n

TL;DR: The parameters in the dynamic modulus and damage characterization model have relatively strong correlation which indicates the necessity of Bayesian techniques and the uncertainty of the damage characteristic curve for a single specimen propagated from parameter uncertainties of theynamic modulus model is negligible compared to the difference in the replicates. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID, Crossref
Added: April 27, 2020

2019 chapter

Use of polymer nanocomposites in asphalt binder modification

In Advanced Functional Textiles and Polymers: Fabrication, Processing and Applications (pp. 405–432).

By: S. Gulzar n & S. Underwood n

Contributors: S. Gulzar n & S. Underwood n

Source: ORCID
Added: February 7, 2024

Employment

Updated: November 11th, 2024 11:11

2024 - present

Colorado State University Pueblo Pueblo, US
SCITT Assistant Professor Southern Colorado Institute of Transportation Technology

Education

Updated: December 15th, 2020 10:26

2016 - 2018

Indian Institute of Technology Delhi New Delhi, Delhi, IN
M.Tech Civil Engineering

2016 - 2016

Indian Institute of Science Bangalore, Karnataka, IN
Junior Research Fellow Civil Engineering

2011 - 2015

National Institute of Technology Srinagar Srinagar, Jammu and Kashmir, IN
Bachelors of Technology Department of Civil Engineering

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