Flexural behavior of environmentally friendly ultra-high-performance concrete with locally available low-cost synthetic fibers

Medina, Andrés Leonardo Neira; García, Joaquín Abellán; Castellanos, Nancy Torres

doi:10.1080/19648189.2021.1938686

Cited by 17 publications

(12 citation statements)

References 36 publications

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“…The literature review shows that substituting some of the Portland cement with GP diminishes the resistance to bending in plain UHPC formulations [15,62]. However, while it is notable that the flexural strength lowers with increasing substitution of GP in the case of plain UHPC, it is important to recognize that in fiber-reinforced UHPC, the primary determinant of performance is the fiber reinforcement system [126][127][128].…”

Section: Flexural Behaviormentioning

confidence: 99%

“…However, while it is notable that the flexural strength lowers with increasing substitution of GP in the case of plain UHPC, it is important to recognize that in fiber-reinforced UHPC, the primary determinant of performance is the fiber reinforcement system [126][127][128]. Neira-Medina et al [15] researched to analyze the impact of different fiber-reinforced systems on the flex- The study also established that concrete of superior quality typically exhibits an ultrasonic pulse velocity exceeding 4575 m/s. As illustrated in Figure 10, the Control dosage reaches the threshold value after seven days of curing, while Optimized 1 requires 28 days, and Optimized 2 necessitates 90 days to achieve a similar threshold value.…”

Section: Flexural Behaviormentioning

confidence: 99%

“…As observed in previous studies, a typical UHPC formulation encompasses Portland cement, reactive powders (such as silica fume (SF)), polycarboxylate-based superplasticizers, water and fine quartz sand (QS) [3,14,15]. Balancing the arrangement of the constituents is crucial to achieving this specialized cementitious material's outstanding mechanical and durability characteristics [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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A Comprehensive Overview of Recycled Glass as Mineral Admixture for Circular UHPC Solutions

Redondo-Pérez,

Redondo-Mosquera,

Abellán-García

2024

Sustainability

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This review article analyzes the influence of recycled glass (as sand and powder) beyond the durability, rheology and compressive strength of plain UHPC, even exploring flexural and direct tensile performance in fiber-reinforced UHPC. Interactions with other mineral admixtures like limestone powder, rice husk ash, fly ash, FC3R, metakaolin and slags, among others, are analyzed. Synergy with limestone powder improves rheology, reducing superplasticizer usage. Research highlights waste glass–UHPC mixtures with reduced silica fume and cement content by over 50% and nearly 30%, respectively, with compressive strengths exceeding 150 MPa, cutting costs and carbon footprints. Furthermore, with the proper fiber dosage, waste glass–UHPC reported values for strain and energy absorption capacity, albeit lower than those of traditional UHPC formulations with high cement, silica fume and quartz powder content, surpassing requirements for demanding applications such as seismic reinforcement of structures. Moreover, durability remains comparable to that of traditional UHPC. In addition, the reported life cycle analysis found that the utilization of glass powder in UHPC allows a greater reduction of embedded CO2 than other mineral additions in UHPC without jeopardizing its properties. In general, the review study presented herein underscores recycled glass’s potential in UHPC, offering economic and performance advantages in sustainable construction.

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Section: Flexural Behaviormentioning

confidence: 99%

Section: Flexural Behaviormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Comprehensive Overview of Recycled Glass as Mineral Admixture for Circular UHPC Solutions

Redondo-Pérez,

Redondo-Mosquera,

Abellán-García

2024

Sustainability

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“…Furthermore, multiple research projects have been conducted to explore the impact and synergistic effects of various SCMs, in addition to SF, in the construction of environmentally friendly RPC concrete [38,40,41]. Based on the foregoing findings, it is reasonable to conclude that GP offers the potential as a viable option for traditional materials in the development of RPC [42,43].…”

Section: Introductionmentioning

confidence: 96%

Multi-Criteria Optimization of Cost-Effective and Environmentally Friendly Reactive Powder Concrete Incorporating Waste Glass and Micro Calcium Carbonate

Abellán-García,

Daza,

Molinares

et al. 2023

Materials

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In pursuit of developing an eco-friendly and cost-effective reactive powder concrete (RPC), we utilized a multi-objective optimization technique. This approach pivoted on the incorporation of byproducts, with a spotlight on ground glass powder (GP) as a pivotal supplementary cementitious material (SCM). Our goal was twofold: engineering cost-efficient concrete while maintaining environmental integrity. The derived RPC showcased robust mechanical strength and impressive workability. Rigorous evaluations, containing attributes like compressive strength, resistance to chloride ion penetration, ultrasonic pulse speed, and drying shrinkage, highlighted its merits. Notably, the optimized RPC, despite an insignificant decrease in compressive strength at 90 days compared to its traditional counterpart, maintained steady strength augmentation over time. The refinement process culminated in a notable 29% reduction in ordinary Portland cement (OPC) usage and a significant 64% decrease in silica fume (SF), with the optimized mix composition being 590 for cement, 100 for SF, 335 for GP, and 257 kg/m3 for calcium carbonate. Additionally, the optimized RPC stood out due to the enhanced rheological behavior, influenced by the lubricative properties of calcium carbonate and the water conservation features of the glass powder. The reactive properties of SF, combined with GP, brought distinct performance variations, most evident at 28 days. Yet, both mixtures exhibited superior resistance to chloride, deeming them ideal for rigorous settings like coastal regions. Significantly, the RPC iteration, enriched with selective mineral admixtures, displayed a reduced tendency for drying-induced shrinkage, mitigating potential crack emergence.

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“…Los materiales cementantes suplementarios (MCS) son aquellos que por sus propiedades pueden ser utilizados en la industria del hormigón en la sustitución parcial del cemento [9,10]. Dentro de éstos, podemos encontrar dos grupos.…”

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Modelo predictivo de redes neuronales para estimar la resistencia a compresión de hormigones con materiales cementantes suplementarios y agregados reciclados

García¹,

Varón²

2022

Matéria (Rio J.)

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El comportamiento del hormigón incorporando agregados reciclados en sustitución total o parcial de los agregados naturales es diferente del comportamiento del hormigón convencional. Así mismo, la sustitución parcial del cemento por materiales cementantes suplementarios afecta también a dicho comportamiento. Pese a que ambas sustituciones parciales presentan indudables beneficios desde el punto de vista de la sostenibilidad, su efecto en la resistencia a compresión del hormigón es difícil de modelar. Este documento tiene como objetivo predecir la resistencia a la compresión de estos hormigones especiales mediante el uso de redes neuronales artificiales (ANN). Los datos de entrenamiento y testeo para el desarrollo del modelo ANN se prepararon utilizando 309 dosificaciones publicadas en 22 fuentes de literatura diferentes. Los resultados indicaron que el modelo ANN es una herramienta eficiente para predecir la resistencia a la compresión de los hormigones que incorporen agregados reciclados y materiales cementantes suplementarios.

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Flexural behavior of environmentally friendly ultra-high-performance concrete with locally available low-cost synthetic fibers

Cited by 17 publications

References 36 publications

A Comprehensive Overview of Recycled Glass as Mineral Admixture for Circular UHPC Solutions

A Comprehensive Overview of Recycled Glass as Mineral Admixture for Circular UHPC Solutions

Multi-Criteria Optimization of Cost-Effective and Environmentally Friendly Reactive Powder Concrete Incorporating Waste Glass and Micro Calcium Carbonate

Modelo predictivo de redes neuronales para estimar la resistencia a compresión de hormigones con materiales cementantes suplementarios y agregados reciclados

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