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RISSurface Treatment of Cementitious Composites by Ultrasound and Its Effect on Durability Performance
Publisher: ASCE
Abstract: In this study, the method of changing the surface layer microstructure of cementitious composites by ultrasonic surface treatment at the early stage of hydration is introduced, and the formation mechanism of the gel phase ...
Studies on Several Factors Affecting Hydration and Properties of Lime-Pozzolan Cements
Publisher: American Society of Civil Engineers
Abstract: This paper investigates effects of several factors such as lime content and the types of lime on water requirement, initial porosity, strength development, pozzolanic reaction rate, and pozzolanic reaction chemistry of ...
Steel Slag—Its Production, Processing, Characteristics, and Cementitious Properties
Publisher: American Society of Civil Engineers
Abstract: Steel slag is a byproduct from either the conversion of iron to steel in a basic oxygen furnace, or the melting of scrap to make steel in an electric arc furnace. This paper reviews the production, processing, and ...
Corrosion of Glasses and Expansion Mechanism of Concrete Containing Waste Glasses as Aggregates
Publisher: American Society of Civil Engineers
Abstract: Expansion and cracking of portland cement concrete containing glass aggregates have been known for decades. Traditional alkali-silica reaction and expansion mechanisms are being used to explain the reaction and expansion ...
On Slip Inception and Static Friction for Smooth Dry Contact
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Slip inception mechanism is very important for modeling of static friction and understanding of some experimental observations of friction. In this work, slip inception was treated as a local competence of interfacial ...
Numerical Analysis of Mixed-Mode Fracture in Concrete Using Extended Fictitious Crack Model
Publisher: American Society of Civil Engineers
Abstract: A numerical formulation of the mixed-mode (mode-I and mode-II) fracture in concrete based on the extended fictitious crack model is presented. For crack propagation, the maximum principal stress criterion is used, assuming ...
Retrieval of Atmospheric Temperature Profiles from AMSU-A Measurement Using a Neural Network Approach
Publisher: American Meteorological Society
Abstract: Backpropagation neural networks are applied to retrieve atmospheric temperature profiles and tropopause variables from the NOAA-15 Advanced Microwave Sounding Unit-A (AMSU-A) measurement based on two different data sources. ...
Failure of a Retaining Structure in a Metro Station Excavation in Nanchang City, China
Publisher: American Society of Civil Engineers
Simplified Model for Vertical Vibrations of Surface Foundations
Publisher: American Society of Civil Engineers
Abstract: A simplified model for simulating unbounded soil in the vertical vibration problems of surface foundations is presented. The model comprises a mass, a spring, and a dashpot without any internal degree of freedom. By ...
Effects of Nanomaterials on Engineering Performance of a Potassium Methyl Siliconate–Based Sealer for Cementitious Composite
Publisher: ASCE
Abstract: Currently, there is an urgent demand for more effective sealers to preserve the integrity and durability of concrete infrastructure in aggressive environments, such as bridge decks subjected to increasing traffic volume ...