Advanced in-situ 4D CT reconstruction for exploring fiber distribution effects on the mechanical behaviors and interface optimization of carbonated high-toughness recycled aggregate concrete

Construction and Building Materials, Год журнала: 2025, Номер 473, С. 140941 - 140941

Опубликована: Март 29, 2025

Язык: Английский

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An accelerated carbonization approach to prepare wasted concrete powder based artificial aggregates for sustainable asphalt mixture

Construction and Building Materials, Год журнала: 2025, Номер 463, С. 140114 - 140114

Опубликована: Янв. 25, 2025

Язык: Английский

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Optimization of Mechanical Properties and Durability of Steel Fiber-Reinforced Concrete by Nano CaCO3 and Nano TiC to Improve Material Sustainability

Sustainability, Год журнала: 2025, Номер 17(2), С. 641 - 641

Опубликована: Янв. 15, 2025

To meet the growing demand for sustainable building materials in modern construction projects, nanomaterials are widely used concrete to improve its mechanical properties, durability, and environmental adaptability. The effects of different calcium carbonate nanoparticles (NC) titanium carbide (NT) substitution rates (0%, 0.5%, 1% 1.5%) on durability properties steel fiber-reinforced (SFRC) were analyzed by experimental studies. We also evolution microstructure, chemical composition, functional groups scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), X-ray diffraction (XRD), Fourier transform infrared (FT-IR). results demonstrated that NC replacement 0.5% NT was optimal combination preparation composite concrete. Compared SFRC with 0% both (CG), 28-day compressive strength NC0.5NT1 increased 35.5%, flexural 26.5%, splitting tensile 16.3%. performance has been significantly improved. After 150 freeze–thaw cycles, quality loss rate cured 28 days decreased 40.6%, relative dynamic elastic modulus 7.7%. Microscopic analysis indicates an appropriate amount replacing cement improves hydration reaction process SFRC, increases content chemically more stable C-S-H gel, but does not change types products cement. have a filling effect, improving pore structure concrete, which helps enhance study provide theoretical basis application as reinforcing particles cementitious materials.

Язык: Английский

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Evaluation of silicone resin enhanced recycled concrete aggregates for asphalt mixture application

Construction and Building Materials, Год журнала: 2025, Номер 463, С. 140030 - 140030

Опубликована: Янв. 20, 2025

Язык: Английский

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Effect of carbonated recycled aggregates on the mechanical properties and bonding performance of polyurethane mortar as a repair material

Journal of Engineering and Applied Science, Год журнала: 2025, Номер 72(1)

Опубликована: Март 29, 2025

Abstract Recycled aggregate (RA) made from construction waste has limited application due to its high porosity, numerous cracks, and other disadvantages such as reduced concrete strength when using aggregate). In this paper, carbonated recycled (CRA) was obtained by carbonating aggregate, natural (NA) in polyurethane mortar (PUM) replaced at different ratios. The physical changes pore structure of RA before after carbonation, the mechanical properties (compressive flexural strength) PUM, three-point bending bond performance were systematically investigated. compactness PUM detected ultrasonic velocity (UPV) test. change mechanism microstructure revealed scanning electron microscopy (SEM). results show that replacement rate is 50%, compressive increased 7.32% 15.83%, respectively, 14.19%, all which are greater than increase a 25%. P with decreased, but generated calcium carbonate carbonation treatment can fill surface pores enhance CRA, test pieces same ratio improved compared those RA.

Язык: Английский

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A Critical Review on the Applications of Modified Recycled Coarse Aggregate in Conventional Concrete and High-Performance Concrete

Journal of Building Engineering, Год журнала: 2025, Номер unknown, С. 112601 - 112601

Опубликована: Апрель 1, 2025

Язык: Английский

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Exploring the influence of silicone resin on the interfacial water stability of steel slag/asphalt: an experimental and molecular dynamics study

Composite Interfaces, Год журнала: 2025, Номер unknown, С. 1 - 29

Опубликована: Май 10, 2025

Язык: Английский

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Insights into the profitability enhancement of recycled concrete aggregate via a dual-modification approach

Construction and Building Materials, Год журнала: 2025, Номер 487, С. 142044 - 142044

Опубликована: Июнь 6, 2025

Язык: Английский

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Interface adhesion enhancement and multi-scale evaluation of recycled concrete aggregate(RCA) and asphalt

Construction and Building Materials, Год журнала: 2024, Номер 457, С. 139271 - 139271

Опубликована: Ноя. 29, 2024

Язык: Английский

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