PhD Student and Graduate Research Assistant · SMARIN Lab

Mayaz Uddin Gazi

Sustainable cementitious materials, Advanced Concrete, and ML/Computer Vision

I am a PhD candidate in Civil and Architectural Engineering at the University of Miami, working in the SMARIN Lab under Dr. Xianming Shi. My work sits Between the materials laboratory and the computer, I study how cementitious systems behave when conventional constituents are replaced by supplementary and alternative materials, and I build computational models that make that behavior predictable. Experimentally, I work across fresh properties, mechanical performance, durability, and microstructure, using TGA, XRD, XRF, SEM-EDS, isothermal calorimetry, electrical resistivity and impedance spectroscopy, shrinkage, and leaching methods under ASTM, AASHTO, and ACI protocols. Computationally, I work in physics-informed and physics-constrained machine learning, Bayesian optimization for mixture design, graph and deep neural networks, and computer vision for microstructural image analysis. I am most interested in problems where neither the chemistry nor the algorithm is Sufficient on its own.

Institution
University of Miami
Department
Department of Civil and Architectural Engineering
Advisor
Prof. Xianming Shi
Conceptual visualization connecting cement and biochar microstructure with neural networks and computer-vision phase segmentation
AI-generated conceptual visualization · Materials characterization × physics-informed learning
Palm-lined pedestrian walkway on the University of Miami Coral Gables campus

University of Miami

Research rooted in Coral Gables.

Palm Tree Walkway, University of Miami. Photo by Chad Cooper, licensed under CC BY 2.0.

Research philosophy

From material evidence to responsible prediction.

My work follows a simple research logic: observe how a material behaves, explain that behavior with engineering science, and translate the evidence into models that remain useful beyond a single dataset.

01 Observe

Experimental evidence

I combine mechanical, durability, thermal, mineralogical, electrical, and microscopic measurements to determine how alternative constituents reshape cementitious systems.

02 Understand

Physics-aware intelligence

I connect hydration, pore structure, age, and performance through constrained and uncertainty-aware learning, with particular attention to behavior outside the training domain.

03 Translate

Engineering decisions

I use prediction and optimization to support realistic decisions about mixture design, durability, embodied carbon, and cost while respecting material and specification limits.

Research agenda

Current research themes

Questions that connect sustainable construction materials with physically credible computation.

01

Biochar-modified cementitious materials

Internal curing, pore refinement, carbon storage, mechanical performance, and dimensional stability in biochar-blended mortar.

  • Compressive strength
  • Shrinkage
  • TGA/DTG
  • XRD
  • SEM-EDS
02

Seawater and sea-sand binder systems

Hydration, phase assemblage, resistivity, transport, and durability of fly-ash and biochar mortars produced with alternative water and aggregate sources.

  • Bulk resistivity
  • EIS
  • Sorptivity
  • Chloride transport
  • Leaching
03

Physics-informed machine learning

Hybrid learning frameworks that embed maturity, hydration, and engineering constraints to improve physical consistency and extrapolation.

  • PINNs
  • OOD evaluation
  • Uncertainty
  • SHAP
  • Cross-validation
04

Digital twins and mix optimization

Data-assisted concrete quality control and multi-objective mix design balancing strength, cost, and embodied carbon.

  • Gaussian processes
  • Bayesian optimization
  • Pareto analysis
  • Life-cycle assessment
05

Microstructure image analysis

Reproducible analysis of cementitious microstructures using microscopy, phase mapping, and image segmentation.

  • BSE imaging
  • EDS mapping
  • CNN segmentation
  • Quantitative microscopy

In progress

Selected projects

Active experimental and computational work. Status labels distinguish projects from peer-reviewed publications.

Ongoing

Seawater–fly ash–biochar mortar

Experimental study of strength, electrical response, shrinkage, hydration products, and contaminant immobilization across curing age.

  • Biochar
  • Fly ash
  • Seawater
  • Durability
Manuscript development

Physics integration in concrete strength learning

Comparison of conventional regression, neural networks, and hard-constrained physics-informed models under interpolation and material-domain shift.

  • PINN
  • NDT
  • Maturity
  • OOD generalization
Framework development

Sustainable mortar digital twin

A multi-objective decision framework connecting early-age measurements with strength, cost, and embodied-carbon optimization.

  • Digital twin
  • Bayesian optimization
  • LCA
Data analysis

Machine learning for alkali-activated concrete

Literature-derived modeling with source-aware validation to test whether strength models generalize to unseen studies.

  • AAC
  • LOSO validation
  • Explainable ML

Research outputs

Journal publications

Complete record on Google Scholar ↗
  1. 01
    Published2026Journal article

    HEStacked-FSML: Data-Efficient Prediction of Nano-Modified Concrete Compressive Strength

    Mayaz Uddin Gazi and Md. Titumir Hasan

    Journal of Computing in Civil Engineering, 40(6), 04026084 · ASCE

    doi:10.1061/JCCEE5.CPENG-7508
  2. 02
    Published2025Journal article

    Few-Shot Meta-Learning for Concrete Strength Prediction: A Model-Agnostic Approach with SHAP Analysis

    Mayaz Uddin Gazi, Md. Titumir Hasan, and P. Debnath

    AI in Civil Engineering, 4(1), 20 · Springer Nature

    doi:10.1007/s43503-025-00064-8
  3. 03
    Under reviewYear pendingJournal manuscript

    Predictive Modeling of Water Pollution in the Surma River Using the Water Pollution Index Framework

Scholarly communication

Conference papers

Peer-reviewed proceedings and accepted conference contributions.

2025

Accepted

Meta-Learning Model for Low-Data River Water Quality Analysis in Northeastern Bangladesh

16th IEEE International Conference on Computing, Communication and Networking Technologies (ICCCNT)

2024

Accepted

Flood Prediction and Forecasting Using ANNs and a Fuzzy Logic Model in Sylhet, Bangladesh

7th International Conference on Advances in Civil Engineering (ICACE), CUET - [Springer]

Background

Experience and education

2026–present

Graduate Research Assistant

SMARIN Lab, University of Miami

Experimental characterization of sustainable cementitious materials and development of physics-informed learning frameworks under Prof. Xianming Shi.

2026–present

Graduate Teaching Assistant

University of Miami

Support for undergraduate civil engineering instruction, laboratory activities, assessment, and student learning.

2025

AI Engineer

DebuggerLab

Developed, evaluated, and communicated machine-learning workflows for engineering applications.

January–June 2025

Research Assistant

Sylhet Engineering College

Worked on experimental design, data preprocessing, and predictive modeling for concrete research.

2026–present

PhD in Civil and Architectural Engineering

University of Miami

Coral Gables, Florida · Advisor: Prof. Xianming Shi

2020–2025

BSc in Civil Engineering

Sylhet Engineering College, Shahjalal University of Science and Technology

Sylhet, Bangladesh · CGPA: 3.40/4.00

Capabilities

Methods and tools

Experimental

  • Compressive and split-tensile strength
  • Shrinkage and dimensional stability
  • Bulk resistivity and EIS
  • Sorptivity and chloride transport
  • Leaching and contaminant immobilization

Materials characterization

  • XRD phase analysis
  • TGA and DTG
  • SEM, BSE, and EDS mapping
  • Isothermal calorimetry
  • Pore-structure interpretation

Data and modeling

  • Python, MATLAB, and Jupyter
  • PyTorch and scikit-learn
  • Physics-informed neural networks
  • Source-aware and out-of-domain validation
  • SHAP and uncertainty analysis

Engineering workflows

  • COMSOL Multiphysics and finite elements
  • Life-cycle assessment with openLCA
  • Bayesian optimization
  • Git and reproducible research
  • Technical and academic communication

Leadership

Service and engagement

2024–2025

President

CE Center of Research

Led student research initiatives, seminars, workshops, and peer learning activities.

2024–2025

Vice President

SEC Civil Society

Coordinated academic and professional-development activities for civil engineering students.

Research notes

Blog

Short notes on methods, evidence, reproducibility, and lessons from work in progress.

Contact

Let’s discuss sustainable materials and engineering AI.

Open to research collaboration, scholarly exchange, and work connecting cementitious-material experiments with reliable data-driven methods.

Email Mayaz