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Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations

Overview

 

Research and Development (R&D) Project Sites

Project Information
Project ID:   FHWA-PROJ-10-0084
Project Name:   Improved Performance of Concrete in Rigid Pavements and Other Transportation Structures Through Modeling of Cement Hydration
Project Status:   Active
Start Date:  October 1, 2010
End Date:  July 5, 2015
Contact Information
Last Name:  Meininger
First Name:  Richard C (Rick)
Telephone:  202-493-3191
E-mail:  richard.meininger@dot.gov
Office:   Office of Infrastructure Research and Development
Team:   Pavement Materials Team [HRDI-10]
Program:   Exploratory Advanced Research
Laboratory:   Aggregate and Petrographic Laboratory
Project detail
Roadmap/Focus area(s):   Infrastructure Research and Technology Strategic Plan and Roadmap
Project Description:   The purpose of this interagency research project with the National Institute of Standards and Technology (NIST) is to work cooperatively with Federal Highway Administration (FHWA) on cement hydration kinetics modeling research. The focus will be on clearly defining the causes of the onset and end of the induction period of alite, which controls set, strength, and subsequent microstructural development. The researchers will simulate the presence of mineral and chemical admixtures by introducing aluminate and sulfate ions and organic retarders at ratios known to perturb normal hydration. The researchers will also use new experimental methods capable of measuring chemical and microstructural changes on the nanometer to micron scale during hydration; the goal is to use this insight to improve the ability of NIST’s HydratiCA model to predict hydration kinetics and microstructure in the presence of supplementary cementing materials (SCMs), such as fly ash, slag and metakaolin, as well as in organic admixtures. This detailed understanding will also lead to the improvement of the boundary nucleation and growth (BNG) model to permit prediction of hydration kinetics and setting behavior, using a software tool that is powerful but simple enough to be used in the field.
Goals:   Improve the models for the hydration reactions of portland cement in concrete.
Product Type:   Research report
Test Methodology:   Use laboratory experiments to improve and model cement hydration.
Partners:   Department of Commerce, , ; Role(s):
Expected Benefits:   Develop models to aid in concrete research and mixture design.
Deliverables: Name: Models of cement hydration and data for the National Institute of Standards and Technology Virtual Cement and Concrete Testing Laboratory models.
Product Type(s): Research report
Description: Models of cement hydration and data for the National Institute of Standards and Technology Virtual Cement and Concrete Testing Laboratory models.
FHWA Topics:   Research/Technologies--FHWA Research and Technology
TRT Terms:   Portland Cement Concrete
Hydration
Infrastructure
Research
Cement
Hydration
Pavements
FHWA Disciplines:   Pavement and Materials
Subject Areas:   Bridges and other structures
Construction
Energy
Materials
Pavements
Research

 

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