Investigation the properties of sustainable ultra-high-performance basalt fibre self-compacting concrete incorporating nano agricultural waste under normal and elevated temperatures

Mostafa, Sahar A.; Tayeh, Bassam A.; Almeshal, Ibrahim

doi:10.1016/j.cscm.2022.e01453

Cited by 24 publications

(5 citation statements)

References 73 publications

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“…Recently, researchers have been interested in producing and developing ultra‐high‐performance concrete (UHPC) properties and their applications, 1–3 in addition to studying the possibility of using nanomaterials (NMs) of industrial waste to improve concrete properties and reduce production costs 4–8 . The main distinguishing features are the superior UHPC's mechanical strength, which is not less than 150 MPa; the tensile strength, which is greater than 8 MPa at 28 days test age of; and its ultra‐durability 9,10 .…”

Section: Introductionmentioning

confidence: 99%

“…industrial waste to improve concrete properties and reduce production costs. [4][5][6][7][8] The main distinguishing features are the superior UHPC's mechanical strength, which is not less than 150 MPa; the tensile strength, which is greater than 8 MPa at 28 days test age of; and its ultra-durability. 9,10 Other distinguished mechanical properties that have attracted researchers and developers include high strength, flexural, splitting tensile, bonding, freezing and thawing, shrinkage and high modulus of elasticity, 11,12 in addition to superior durability properties, such as low rate of air content, water sorptivity, chloride permeability, water and gas permeability, and water absorption.…”

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confidence: 99%

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Effect of modified nano‐titanium and fly ash on ultra‐high‐performance concrete properties

Ghanim

Amin

Zeyad

et al. 2023

Structural Concrete

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This paper aims to study the effect of using modified nano‐TiO2 with fly ash (FA) on ultra‐high performance concrete's (UHPC) mechanical, transport, and microstructure properties (UHPC). A ball mill was used to disband the nano‐TiO2 and distribute it uniformly within the FA powder. In this research, 20% of the cement weight was replaced by FA, and nano‐TiO2 was added by 0.4%, 0.8%, 1.2%, 1.6%, and 2% of the FA weight. To investigate the effect of the ball mill period on the UHPC properties, periods of 10, 20, 30, and 40 min were applied to a binder of 20% FA and with 6% nano‐TiO2. In addition, a 30‐min ball mill period on a binder of 20% FA and 0.4%, 0.8%, 1.2%, 1.6%, and 2% nano‐TiO2 was also investigated. Tests of compressive strength after 1, 7, 28, and 91 days of curing in tap water, splitting tensile strength, flexural strength, and modulus of elasticity were performed after 28 days of curing in tap water. Tests of chloride permeability, sorptivity coefficient, water permeability, and microstructure were also performed after 28 days of curing in tap water. The results showed that the addition of higher percentages of nano‐TiO2 led to a decrease in workability. The addition of nano‐TiO2 improved the mechanical properties. The highest compressive strength of 208.9 MPa was achieved for the mixture of 20% FA with 1.2% nano‐TiO2 at the age of 28 days. The 30‐min period of application of the ball mill achieved the best performance compared with the other periods. The results of using a ball‐mill to re‐mix nano‐TiO2 between 1.2% and 2% by weight with FA showed impressive comparative results.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Effect of modified nano‐titanium and fly ash on ultra‐high‐performance concrete properties

Ghanim

Amin

Zeyad

et al. 2023

Structural Concrete

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“…They are associated with high population density, high housing density, and obsolete fire protection systems (Zheng et al, 2020; Khaliq and Bashir, 2016; Daware and Naser, 2021), leading to increased susceptibility to fire disasters. Although masonry materials do not combust, the mechanical strength of concrete blocks and cement mortar is reduced significantly, and the structure loses its stability at high temperatures (Mostafa et al, 2022; Noman et al, 2022a; 2022b). This can result in structural damage, building collapse, and casualties (Udi et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Experimental study on high-temperature resistance of alkali-activated slag concrete block masonry

Huang,

Zheng,

Wang

2023

Advances in Structural Engineering

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The use of blast furnace slag improves resource utilization and supports the achievement of sustainable development goals. The use of alkali-activated slag cementitious material (AASCM) provides a new direction for improving the fire resistance of masonry structures. The masonry investigated in this study was alkali-activated slag crushed aggregate concrete masonry (ASCCM) in which aggregates of blocks and mortars were crushed and screened using AASCM paste specimens. The compression behavior of 12 specimens during and after exposure to high temperatures, specifically 300, 500, 600, 700, 800, and 900°C was investigated. The specimens were maintained under the target temperature for 2 h. The compressive strength and axial deformation of the specimen were recorded. The compressive strength losses during exposure to 300, 500, 600, 700, 800, and 900°C are 15.9, 20.3, 38.3, 43.9, 63.3 and 73.8%, respectively. The compressive strength losses after exposure to 300, 500, 600, 700, 800, and 900°C are 10.6, 15.8, 34.0, 37.2, 58.6 and 72.2%, respectively. The rate of loss in elastic modulus is greater than that in compressive strength. During exposure to 300, 500, 600, 700, 800, and 900°C, the loss rates of elastic modulus are 56.5, 74.4, 83.3, 86.3, 92.9 and 93.9%, respectively. After exposure to 300, 500, 600, 700, 800, and 900°C, the loss rates of elastic modulus are 49.6, 67.3, 77.5, 82.0, 90.7 and 94.5%, respectively. The peak compressive strain values are 9.9 and 11.1 times that at room temperature. Equations for calculating the compressive strength, elastic modulus, peak compressive strain, and ascending section curve of the stress–strain relationship with temperature were derived. The research results provide a new choice for high temperature resistant masonry materials, and provide theoretical basis and data support for the application of AASCM in masonry structures in high-temperature environments.

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“…Either natural or synthetic fibres can be employed in all various forms of concrete, including UHPGPC. The incorporation of fibres into concrete improves impact resistance at room temperature, reduces plastic shrinkage, and improves ductility and mechanical strength [8].…”

Section: Introductionmentioning

confidence: 99%

Influence of Fibres on the Strain Hardening Behaviour of Ultra-High-Performance Geopolymer Concrete: A Review

Philip,

Nidhi

2023

Advances in Physics Research

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Continuous cement manufacturing has increased the percentage of CO 2 emitted into the air, thereby increasing the problem of global warming and its damaging effects on the environment. Therefore, adopting a more sustainable strategy to replace conventional concrete has become essential. Geopolymer concrete (GPC) is a relatively new engineering material that is sustainable and innovative and has several advantages over conventional cement concrete. The use of supplementary cementitious materials mixed with alkali-activated solutions can be substituted for cement in GPC manufacturing. Generally, "ultrahigh-performance concrete" (UHPC) is referred to as a composite material made from ordinary Portland cement (OPC) with better durability, compressive strength which is extremely high, and toughness. Recently, studies have been conducted to develop UHPC using geopolymer technology with a performance comparable to that of UHPC. However, comparable to UHPC, ultra-high-performance geopolymer concrete (UHPGPC) without fibres may show significant brittleness with the strength increase. The intrinsic brittle nature of concrete can lead to the cracking and eventual failure of concrete structures. Consequently, it becomes necessary to add fibres to increase the ductile performance of UHPGPCs. To enhance the practical uses of UHPGPCs and improvement in fundamental knowledge of material testing requirements and procedures, a detailed analysis of the strain-hardening properties of UHPGPCs is necessary. As a result, the impact of fibres on the strainhardening behaviour of GPCs and UHPGPCs is thoroughly reviewed in this work. The findings of this research will serve as an essential foundation for designing and developing UHP-GPC with better strain-hardening behaviour.

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Investigation the properties of sustainable ultra-high-performance basalt fibre self-compacting concrete incorporating nano agricultural waste under normal and elevated temperatures

Cited by 24 publications

References 73 publications

Effect of modified nano‐titanium and fly ash on ultra‐high‐performance concrete properties

Effect of modified nano‐titanium and fly ash on ultra‐high‐performance concrete properties

Experimental study on high-temperature resistance of alkali-activated slag concrete block masonry

Influence of Fibres on the Strain Hardening Behaviour of Ultra-High-Performance Geopolymer Concrete: A Review

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