23 Result(s)
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Article
Effect of Partial Replacement of Fly Ash by Decoration Waste Powder on the Fresh and Mechanical Properties of Geopolymer Masonry Mortar
This study aims to investigate the feasibility of using decoration waste powder (DWP) as a partial replacement for fly ash (FA) in the preparation of geopolymer masonry mortar, and to examine the effect of dif...
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Article
Metal–organic framework wafer enabled fast response radiation detection with ultra-low dark current
Semiconductive metal–organic frameworks (MOFs) have attracted great interest for the electronic applications. However, dark currents of present hybrid organic–inorganic materials are 1000–10,000 times higher t...
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Article
Pore Characteristic Design Method of High-strength Pervious Concrete Based on the Mechanical Properties and Rainstorm Waterlogging Resistance
High-strength pervious concrete (HSPC) with porosity ranging from 0.08% to 2.011% was prepared. The mechanical properties and rainstorm waterlogging resistance of HSPC were evaluated, and a design method of HS...
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Article
Effect of Fatigue Loading on the Mechanical Properties and Resistance of High-strength Straight-hole Recycled Pervious Concrete to Rainstorm-based Waterlogging
A novel high-strength straight-hole recycled pervious concrete (HSRPC) for the secondary highway pavement was prepared in this paper. This study aimed to investigate the effect of porosity (0.126%, 0.502%, and...
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Article
Effect of CO2 Curing on the Physical Properties of Recycled Coarse Aggregate with Different Attached Mortar Contents
The effects of carbon dioxide (CO2) curing conditions (temperature, relative humidity and CO2 curing time) on the physical properties of recycled coarse aggregate (RCA) with varying attached mortar (AM) contents ...
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Article
Effect of SiO2 Aerogel-cement Mortar Coating on Strength of Self-Compacting Concrete after Simulated Tunnel Fire
In order to facilitate self-compacting concrete to be better used in tunnel linings that can resist fires, a SiO2 aerogel-cement mortar coating was prepared. Based on the HC curve, a self compacting concrete cube...
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Article
Strength and Microstructural Analysis of Geopolymer Prepared with Recycled Geopolymer Powder
The strength and microstructural analysis of recycled geopolymer are presented in this paper. Five kinds of geopolymers containing 0%, 20%, 50%, 80% and 100 % of recycled geopolymer powder were prepared using ...
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Article
Effect of Curing Temperature on Tunnel Fire Insulation of Aerogel Cement Paste Coatings
To further strengthen the protective effect of aerogel cement paste (ACP) coating on self-compacting concrete (SCC) in tunnel fire under the optimal mix proportion, the effect of curing temperature (from 5 to ...
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Article
Modeling and design of the improved D-STATCOM control for power distribution grid
The distribution static compensator (D-STATCOM) is a power quality compensator, which can be utilized for improving the power quality of the distribution power grid by managing the flow of reactive power and u...
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Article
Density Dependence of Tunnel Fire Resistance for Aerogel-Cement Mortar Coatings
Five kinds of mortars with density grades of 500, 600, 700, 800, and 900 kg/m3 were prepared. Their thermal conductivity and compressive strength were measured, and the morphological changes before and after simu...
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Article
The Frost-resisting Durability of High Strength Self-Compacting Pervious Concrete in Deicing Salt Environment
A high strength self-compacting pervious concrete (SCPC) with top-bottom interconnected pores was prepared in this paper. The frost-resisting durability of such SCPC in different deicing salt concentrations (0...
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Article
Strength and Chloride Diffusion Behaviour of Three Generations of Repeated Recycled Fine Aggregate Concrete
The feasibility of using different generations of recycled fine aggregate (RFA) in structural concrete in a chloride environment was evaluated by studying the performance of the RFA and the corresponding concr...
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Article
Mechanical Properties and ITZ Microstructure of Recycled Aggregate Concrete Using Carbonated Recycled Coarse Aggregate
The effect of carbonation treatment and mixing method on the mechanical properties and interfacial transition zone (ITZ) properties of recycled aggregate concrete (RAC) was investigated. Properties of recycled...
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Article
Tuning oxygen vacancies in two-dimensional iron-cobalt oxide nanosheets through hydrogenation for enhanced oxygen evolution activity
The oxygen evolution reaction (OER) represents the rate-determining step of electrocatalytic water splitting into hydrogen and oxygen. Creating oxygen vacancies and adjusting their density has proven to be an ...
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Article
A nitrogen-doped electrocatalyst from metal-organic framework-carbon nanotube composite
Replacing precious and nondurable platinum-based catalysts by economical and commercially available materials is a key issue addressed in contemporary fuel cell technology. Carbon-based nanomaterials display g...
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Article
A simple mix proportion design method based on frost durability for recycled high performance concrete using fully coarse recycled aggregate
Durability design of recycled high performance concrete (RHPC) is fundamental for improving the use rate and level of concrete waste as coarse recycled aggregate (CRA). We discussed a frost-durability-based mi...
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Article
Microwave-assisted hydrothermal synthesis of carbon materials with tunable microstructure
A facile microwave-assisted hydrothermal route has been developed for a synthesis of versatile carbon materials. The monosaccharide fructose aqueous solution was adopted as the starting material, and the pH of...
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Article
Performance degradation of the repeated recycled aggregate concrete with 70% replacement of three-generation recycled coarse aggregate
The feasibility of using different generations recycled coarse aggregate (RCA) on structural concrete was fully evaluated by studying the performance of the recycled coarse aggregates and their corresponding c...
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Article
A stochastic concession model for infrastructure projects under build-operate-transfer schemes
Concession period is a key factor in the arrangement of a build-operate-transfer (BOT) contract. This paper proposes a stochastic concession period model for infrastructure projects under a BOT scheme, which t...
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Article
Structural characteristics and photocatalytic activity of ambient pressure dried SiO2/TiO2 aerogel composites by one-step solvent exchange/surface modification
An ambient pressure synthesis of SiO2/TiO2 binary aerogel was prepared through the low-cost precursors of titanium tetrachloride (TiCl4) and sodium silicate (Na2O·nSiO2). After gelation, solvent exchange and surf...
