Building materials

News and Updates

A slab of concrete with ragged edges sits on a warehouse floor as researchers use equipment to extract core samples.

NIST Provides Update on Investigation Into the Collapse of Champlain Towers South

September 7, 2023

Preliminary evaluations show additional deviations from design in pool deck construction, no underground voids.

NIST Researchers Link Cutting-Edge Gravity Research to Safer Operation of Construction Cranes

February 17, 2022

In the beginning, all that Stephan Schlamminger wanted to do was to write down an equation that would help him obtain a more precise value for G, the

A steel column with a deep web on the left and a steel column with a shallow web on the right.

Proposed Updates to Steel Building Standard Could Enhance Earthquake Resilience

January 7, 2022

Since the mid-1990s, a type of steel column that commonly features slender cross-sectional elements has become more prevalent in buildings along the West Coast

Projects and Programs

Assessing Pyrrhotite in Concrete

Ongoing

Damage to concrete structures in residential and commercial construction in central Connecticut have been attributed to the iron sulfide mineral pyrrhotite

Physical Infrastructure: Connections

Completed

Using a complementary approach of experimental measurements and detailed finite element analysis, we will develop more realistic yet computationally efficient

Service Life Prediction of Filled Polymers Project

Ongoing

Prior efforts at NIST demonstrated the feasibility of quantitative service life prediction by linking the field and laboratory for an unfilled polymer. This

Measurement Science for Service Life Prediction of Polymeric Components Used in Photovoltaic (PV) Systems

Ongoing

Due to intensified pricing pressure and rapid growth of photovoltaic (PV) technology, low cost and emerging polymeric materials are being used increasingly in

Publications

Retrofit and Repair of Reinforced Concrete Walls With FRP: A Review of Experimental Investigations

July 13, 2023

Author(s)

Jazalyn Dukes, Siamak Sattar

Retrofit and repair of structures occur under differing circumstances but are both necessary to improve existing building stock and increase resilience of

Electrosteric control of the aggregation and yielding behavior of concentrated portlandite suspensions

June 13, 2023

Author(s)

Sharu Kandy, Mathieu Bauchy, Gaurav Sant, Aditya Kumar, Narayanan Neithalath, Samanvaya Srivastava, Torben Gaedt, Edward Garboczi

Portlandite (calcium hydroxide: CH: Ca(OH)2) suspensions aggregate spontaneously and form percolated fractal aggregate networks when dispersed in water. As a

Implementing NIST Infiltration Correlations

March 31, 2023

Author(s)

Jyrteanna Teo, Lisa Ng

This tutorial is a guide on how to implement the NIST infiltration correlations (Ng et al., 2021) into EnergyPlus building energy simulation software for the US

A quantitative characterization of spatial arrangement of air voids in mortars via X-ray CT and numerical calculations

November 4, 2022

Author(s)

Edward Garboczi, Kai Lyu, Yufeng Gao, Changwen Miao, Xiaoyan Liu

Compared with overall air void content and size distribution, the spatial arrangement of air voids is probably of more importance in the durability of cement

Software

Prediction of a Chloride Ion Penetration Profile for a Concrete

January 13, 2017

Prediction is based on a one-dimensional finite difference solution of Fick's second law of diffusion, with a variable external chloride concentration and a two

MicroChar

April 1, 2015

(Return to Cement Hydration and Degradation Modeling Software) Accurate quantitative data on cement and clinker microstructure images can prove valuable for

Stokes Three-Dimensional Permeability Solver

(Return to Cement Hydration and Degradation Modeling Software) A set of C and Fortran computer programs have been developed for computing the permeability of

Estimation of Pore Solution Conductivity

(Return to Cement Hydration and Degradation Modeling Software) The purpose of this form is to provide an estimate of the electrical conductivity (S/m) of the

Building materials

News and Updates

NIST Provides Update on Investigation Into the Collapse of Champlain Towers South

NIST Researchers Link Cutting-Edge Gravity Research to Safer Operation of Construction Cranes

Proposed Updates to Steel Building Standard Could Enhance Earthquake Resilience

Projects and Programs

Assessing Pyrrhotite in Concrete

Physical Infrastructure: Connections

Service Life Prediction of Filled Polymers Project

Measurement Science for Service Life Prediction of Polymeric Components Used in Photovoltaic (PV) Systems

Publications

Retrofit and Repair of Reinforced Concrete Walls With FRP: A Review of Experimental Investigations

Electrosteric control of the aggregation and yielding behavior of concentrated portlandite suspensions

Implementing NIST Infiltration Correlations

A quantitative characterization of spatial arrangement of air voids in mortars via X-ray CT and numerical calculations

Software

Prediction of a Chloride Ion Penetration Profile for a Concrete

MicroChar

Stokes Three-Dimensional Permeability Solver

Estimation of Pore Solution Conductivity

Tools and Instruments

Integrating Sphere-based Weathering Device

Large Aperture Scanner

Line Heat-Source Guarded Hot Plate