David A. Lange
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View article: Influence of fine inclusions on the morphology and mechanical performance of lightweight foam concrete
Influence of fine inclusions on the morphology and mechanical performance of lightweight foam concrete Open
Lightweight foam concrete is a cementitious cellular solid with a series of functional properties. Its non-structural applications potentially permit a high-volume inclusion of particles (e.g., recycled fines). However, the particle inclus…
View article: Image-based Restoration of the Concrete Void System Using 2D-to-3D Unfolding Technique
Image-based Restoration of the Concrete Void System Using 2D-to-3D Unfolding Technique Open
Hardened air void analysis provides essential information of concrete freeze-thaw durability based on the size and spacing of air voids in the material. As the physical freeze-thaw experiment is time-consuming and costly, the characteristi…
View article: The Role Of Humanities And Social Sciences In The Civil Engineering Body Of Knowledge
The Role Of Humanities And Social Sciences In The Civil Engineering Body Of Knowledge Open
NOTE: The first page of text has been automatically extracted and included below in lieu of an abstract The Role of Humanities and Social Sciences in the Civil Engineering Body of Knowledge Abstract The American Society of Civil Engineers …
View article: Correction to: Improved method to measure the strength and elastic modulus of single aggregate particles
Correction to: Improved method to measure the strength and elastic modulus of single aggregate particles Open
The article ''Improved method to measure the strength and elastic modulus of single aggregate particles'', written by ''Natalia V. Silva, Sérgio C. Angulo, Aline da Silva Ramos Barboza, David A. Lange, Luís M. Tavares'', was originally pub…
View article: Deep Learning-Based Automated Image Segmentation for Concrete Petrographic Analysis
Deep Learning-Based Automated Image Segmentation for Concrete Petrographic Analysis Open
The standard petrography test method for measuring air voids in concrete (ASTM C457) requires a meticulous and long examination of sample phase composition under a stereomicroscope. The high expertise and specialized equipment discourage t…
View article: Effects of the incorporation of residue of masonry on the properties of cementitious mortars
Effects of the incorporation of residue of masonry on the properties of cementitious mortars Open
This paper presents results of an experimental study of a residue of masonry (RM), sampled from a construction and demolition waste (CDW), added as a supplementary cementitious material (SCM) to partially replace up to 50% of Portland ceme…
View article: Effects of prestressing and saw-cutting on the freeze-thaw durability
Effects of prestressing and saw-cutting on the freeze-thaw durability Open
There are many factors that affect the freeze-thaw durability of concrete elements, including proper air entrainment system, freeze-thaw durable aggregates, low permeability, and proper curing. While ASTM C666 allows the excising of small …
View article: Improved method to measure the strength and elastic modulus of single aggregate particles
Improved method to measure the strength and elastic modulus of single aggregate particles Open
The standard methods used to determine the mechanical properties of single aggregate particles have shortcomings. Indeed, methods that are commonly used to measure the strength of irregular particles do not provide their elastic modulus an…
View article: Crushing Performance of Ultra-Lightweight Foam Concrete with Fine Particle Inclusions
Crushing Performance of Ultra-Lightweight Foam Concrete with Fine Particle Inclusions Open
Foam concrete is a low-density controlled strength material that can potentially be used for accommodating different types of particles—recycled fine aggregate being an example. The paste matrix of this material has a cellular microstructu…
View article: Measuring Young’s Modulus of Low-Density Foam Concrete Using Resonant Frequency
Measuring Young’s Modulus of Low-Density Foam Concrete Using Resonant Frequency Open
Foam concrete is a construction material with controllable low strength and untraditional physical properties. Its highly crushable nature leaves it a niche as an engineered energy-absorbing material in many value-added applications; howev…
View article: Crushing Behavior and Crushing Strengths of Low-Density Foam Concrete
Crushing Behavior and Crushing Strengths of Low-Density Foam Concrete Open
Foam concrete is a highly cellularized cementitious material that undergoes extensive plastic deformation when loaded to failure. Under compression, the foam structure gets progressively crushed at a steady stress stage such that a substan…