Qiuning Yang
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Influence of Corrosion Conditions on Prestressing Force and Residual Tensile Capacity of Corroded Prestressed Concrete Steel Strands Open
This paper investigates the mechanism of the corrosion pattern of wires on the prestressing forces of prestressed concrete (PC) strands. A rigid frame testing machine combined with an electrically accelerated corrosion device was used to t…
Experimental Study on the Application of Recycled Concrete Waste Powder in Alkali-Activated Foamed Concrete Open
The alkali-activated cementitious material was prepared by partially replacing slag with recycled concrete powder (RCP). The influence of RCP substitution rates (10%, 20%, 30%, 40%, and 50% mass fraction) on the performance of alkali-activ…
Properties of Gangue Powder Modified Fly Ash-Based Geopolymer Open
The environmental and economic problems caused by gangue accumulation continue to worsen. Therefore, the implementation of a cost-effective method for utilizing gangue resources is urgent. In this study, different gangue powder (GP) conten…
Effect of Replacing Fine Aggregate with Fly Ash on the Performance of Mortar Open
Natural river sand resources are facing depletion, and large-scale mining pollutes the environment and harms humans. To utilize fly ash fully, this study used low-grade fly ash as a substitute for natural river sand in mortar. This has gre…
Effects of nano-SiO <sub>2</sub> additives on carbon fiber-reinforced fly ash–slag geopolymer composites performance: Workability, mechanical properties, and microstructure Open
Fly ash and slag are commonly used precursors in alkali-activated concrete. However, they suffer from high brittleness, poor toughness, and susceptibility to cracking. To address these limitations, this experimental study investigates the …
Mechanical Properties and Damage Layer Thickness of Green Concrete under a Low-Temperature Environment Open
To study the influence of mineral admixtures on concrete’s mechanical properties after a low-temperature exposure, green concrete was prepared by mixing fly ash and slag at different replacement rates. By analysing the changes to concrete’…
Preparation and Properties of Foam Concrete Incorporating Fly Ash Open
Foam concrete is fire resistant and durable and has broad applicability as a building insulation material. However, cement has high energy consumption and causes pollution, necessitating an environment-friendly cementitious material to rep…
Experimental Study on Prestressing Force of Corroded Prestressed Concrete Steel Strands Open
This study presents the effect of corrosion of prestressed concrete (PC) strands on the prestressing force and the reduction mechanism of the uniaxial force. A total of 14 strands was tested by combining a rigid frame testing machine with …
Effect of Equal Volume Replacement of Fine Aggregate with Fly Ash on Carbonation Resistance of Concrete Open
Concrete is prepared by substituting an equal volume of fly ash for fine aggregate, and the effect of substitution rate on its carbonation resistance is studied. Using a rapid carbonation test, the distribution law of the internal pH value…
Potential Loss of Toxic Elements from Slope Arable Soil Erosion into Watershed in Southwest China: Effect of Spatial Distribution and Land-Uses Open
The watershed-scale distribution and loss of potentially toxic elements (PTEs) through soil erosion from slope lands to a watershed has not yet been systematically studied, especially in small mountain watersheds with high geological backg…
Shrinkage Effects of Using Fly Ash instead of Fine Aggregate in Concrete Mixtures Open
China is the world’s largest emitter of fly ash, an industrial by‐product of coal combustion. Motivated towards greener development, China’s engineering industries must determine how to effectively utilize this by‐product, while ensuring e…
Carbonation Resistance of Concrete with Fly Ash as Fine Aggregate Open
In order to investigate the carbonation resistance of concrete with fly ash as fine aggregate (CFA), the rapid carbonation test was conducted to explore the influence of the curing age, water-to-cement (w/c) ratio, fly ash replacement rate…
Study on Mechanical Properties of Self-Compacting Concrete and Its Filled in-Line Multi-Cavity Steel Tube Bundle Shear Wall Open
In this paper, five groups of C40 fly ash and silica fume self-compacting concrete (SCC) mix proportion tests and in-line multi-cavity steel tube bundle self-compacting concrete shear wall axial compression performance tests and numerical …
Mechanical and Ultrasonic Testing of Self-Compacting Concrete Open
Based on the urban shantytown renovation project in Hongguang Town, Helan County, Ningxia, in Northwest China, the influence of fly ash and silica fume admixture on the mechanical properties of Self-compacting Concrete (SCC) was tested and…
Study of Durability of Concrete with Fly Ash as Fine Aggregate under Alternative Interactions of Freeze‐Thaw and Carbonation Open
To study the durability of concrete with fly ash as fine aggregate subjected to alternative attacks of freeze‐thaw and carbonation, the appearance, mass loss, relative dynamic modulus of elasticity, relative compressive strength, and carbo…
Experimental Investigation of Neutralisation of Concrete with Fly Ash as Fine Aggregate in Freeze‐Thaw Environment Open
To study the durability of concrete with fly ash as fine aggregate under alternate freeze‐thaw and carbonation, freeze‐thaw and carbonation cyclic tests are conducted to explore variation characteristics such as relative dynamic modulus of…