Nanomaterial Enhanced Concrete for Improved Strength

A novel approach to enhancing cementitious materials through the integration of nano-TiO2, nano-SiO2, nano-Fe2O3, and sugarcane bagasse ash (SCBA) into cement-based concrete. The process involves replacing conventional cement with these nano-additives and optimizing their proportions to achieve significant improvements in compressive and tensile strength. The SCBA content is specifically tailored to enhance durability while maintaining workability. The combination of these materials addresses the environmental challenges associated with cement production by utilizing waste materials and reducing CO2 emissions.

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Geopolymer concrete with enhanced mechanical properties through the incorporation of carbon nanotubes. The concrete mix ratio combines conventional fly ash, sand, and NaOH with a controlled carbon nanotube addition, achieving improved mechanical properties while maintaining durability. The preparation method involves a continuous graded crushed stone aggregate, which enhances the concrete's compactness. The carbon nanotubes are dispersed throughout the concrete matrix to fill micropores and optimize microstructure, while maintaining their unique mechanical properties. The resulting concrete exhibits superior mechanical performance compared to conventional geopolymer concrete.

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Toughened concrete that combines the benefits of nano-scale mineral admixtures and fiber-reinforced concrete to enhance its mechanical properties. The composite material comprises cement, sand, gravel, pulverized coal, ash, bamboo fiber, nano-silicon oxide nano-calcium carbonate composite, and a water-reducing agent. The precise formulation of 275-325 cement, 575-675 sand, 1170-1370 gravel, 70-80% pulverized coal, 15-19% ash, 21-27% bamboo fiber, 4.5-5.5% nano-silicon oxide nano-calcium carbonate composite, and 4.5-5.5% water-reducing agent achieves superior mechanical performance at both elevated temperatures and normal conditions.

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Calcium carbonate reinforced concrete with enhanced mechanical properties through the controlled incorporation of nano calcium carbonate. The reinforced concrete combines cement, river sand, coarse aggregate, modified nano calcium carbonate, alumina-doped carbon fibers, fly ash, water reducer, triethanolamine, and water to produce a composite material with improved mechanical performance. The nano calcium carbonate enhances concrete strength, durability, and durability through its hydration reaction with cement, while the alumina-doped carbon fibers provide enhanced tensile strength. The composite material exhibits superior compressive strength, flexural strength, and chloride ion diffusion coefficient compared to conventional reinforced concrete.

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Method for optimizing cement-based material performance through nano-mineral incorporation. The method involves systematically varying the nano-material dosage in cement formulations while maintaining controlled curing conditions. Through controlled testing, the optimal nano-material concentration is identified as 2.5% nano-SiO2 and 1.5% nano-Al2O3, achieving superior mechanical properties including increased compressive strength and durability compared to conventional cement formulations.

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Nanometer ultra-high performance concrete with improved workability, durability, and sustainability. The concrete combines ultra-fine aggregate, high-efficiency water-reducing agents, and specialized cementitious materials to achieve exceptional mechanical properties. The preparation method involves a controlled alkali activation step, followed by precise mixing and curing sequences that optimize the material's performance characteristics. The resulting concrete exhibits improved workability, reduced water requirements, and lower environmental impact compared to conventional ultra-high performance concrete.

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Ultra-high performance concrete (UHPC) material with enhanced mechanical properties through the strategic combination of advanced additives and powders. The material combines steel fibers, a water-reducing agent, cellulose aldehyde, a plastic expansion agent, and a defoaming agent, with a Portland cement matrix. This formulation provides exceptional compressive strength, chloride dispersion resistance, and durability, making it suitable for high-performance applications such as bridges, tunnels, and building structures.

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A concrete nano-reinforcer that improves concrete properties through nanoscale reinforcement. The reinforcement agent comprises silicon dioxide particles with 10 nm diameter and lamellar graphene particles with 110 nm diameter, combined with silicic acid particles. The reinforcement agent enhances concrete strength and durability by filling nano-scale voids and improving cement hydration, while maintaining optimal compressive strength and cement dosage.

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Nanosilica reinforced geopolymer concrete with enhanced thermal durability through the incorporation of polyvinyl alcohol (PVA) fibers. The composite formulation combines a cementitious matrix with fly ash, slag, water, and nano-silica, reinforced with PVA fibers. The PVA fibers are selectively incorporated at specific concentrations to optimize mechanical properties while maintaining thermal stability. The formulation demonstrates improved thermal resistance compared to conventional geopolymer concrete, with significant reductions in compressive and flexural strength at elevated temperatures.

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Concrete with enhanced durability through the integration of ultrafine materials into traditional cement-based composites. The innovative composite comprises cement, sand, stone, water, silica fume, a water-reducing agent, micron-sized materials, nanomaterials, and dispersants. The micron-sized materials, specifically silicon nitride and carbon nanotubes, are incorporated into the cement matrix, while the nanomaterials, particularly silicon nitride and carbon nanotubes, are dispersed throughout the aggregate. This composite formulation addresses the traditional limitations of cement-based materials by introducing ultrafine reinforcement and nanoscale components that enhance mechanical properties, durability, and resistance to environmental stressors.

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High-strength, high-ductility concrete for critical infrastructure applications like bridges and buildings, achieved through a novel fiber reinforcement strategy that combines ultra-high-strength fibers with advanced fiber reinforcement systems. The concrete incorporates a proprietary blend of ultra-high-strength fibers, including ramie, basalt, and CaCO3 whiskers, along with nano-silicon and nano-titanium/graphene oxide dispersion, and specific mineral admixtures like fly ash and straw ash. The fibers are strategically arranged to form a continuous reinforcement system that provides superior crack resistance, ductility, and bond strength with steel, while maintaining high compressive strength and durability. The fiber reinforcement system is achieved through a multi-stage crack control approach that incorporates macro-scale crack management and micro-scale particle gradation optimization.

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Self-grown nano-calcium rock fiber reinforced concrete with enhanced mechanical properties through controlled fiber growth. The fiber is generated through a proprietary process that incorporates nano-calcite powder into cementitious materials, where the powder undergoes controlled hydration to form fibers. This fiber matrix is then combined with conventional cementitious components, water, and aggregate to produce a reinforced concrete with superior tensile strength and toughness. The fiber growth process enables uniform dispersion of the fibers within the matrix, while maintaining optimal working performance characteristics.

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Concrete composition with enhanced mechanical properties achieved through the incorporation of high-performance basalt nanoparticles. The composition comprises cement, water, basalt fine sand, basalt aggregates, one or more admixtures, and specifically engineered basalt nanoparticles. The basalt nanoparticles are prepared through a multi-stage treatment process that includes mechanical grinding, thermal treatment, and separation. The resulting composition exhibits significantly improved mechanical strength compared to conventional concrete formulations.

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A novel ultra-high performance concrete (UHPC) formulation and preparation method that addresses the shortcomings of conventional UHPC by achieving enhanced durability and performance characteristics. The formulation combines a unique nanomaterial dispersion system with a specialized superplasticizer blend that enables uniform dispersion of the nanomaterials within the cement matrix. The superplasticizer blend is formulated with a specific ratio of polyether-modified silicone oil and methyl cellulose ether, which enhances the superplasticizer's performance while maintaining its water-reducing properties. The nanomaterial dispersion system prevents agglomeration and ensures uniform dispersion of the nanomaterials, while the specialized superplasticizer blend enables denser and more uniform cement matrix. The resulting UHPC exhibits superior mechanical properties, including enhanced strength, durability, and resistance to freeze-thaw, chloride ion penetration, and carbonation.

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A cost-effective and efficient method for preparing nano-reinforced cement-based composites using a modified nano-silica that improves dispersion and stability in alkaline cement environments. The method involves incorporating polycarboxylate water-reducer modified nano-silica into cement mixtures, where the water-reducer enhances dispersion and reduces agglomeration. This approach enables the production of cement-based composites with improved workability and rheology compared to conventional methods, while maintaining the same performance characteristics as conventional cement-based materials.

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Hybrid fiber and nano-material reinforced geopolymer concrete that enhances its mechanical properties and impact resistance through the incorporation of reinforcing fibers and nanomaterials into the geopolymer matrix. The reinforcement components, such as polyvinyl alcohol (PVA) fibers and polycarboxylic acid superplasticizers, are combined with the geopolymer matrix to create a composite material with improved mechanical performance. The nanomaterials, including nano-silica and metakaolin, enhance the material's durability and resistance to environmental stressors. The composite material exhibits enhanced compressive strength, improved tensile strength, and superior impact resistance compared to conventional geopolymer concrete.

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A method for preparing high-performance recycled concrete through synergistic reinforcement of nano-silica and basalt fibers. The method combines the conventional addition of fibers to recycled concrete with a specific fiber-to-aggregate ratio, resulting in improved mechanical properties compared to conventional recycled concrete. The fibers enhance the cement matrix by improving dispersion and reducing defects, while the modified aggregate provides enhanced mechanical strength and durability. The optimized fiber-to-aggregate ratio enables the production of concrete with enhanced compressive strength, tensile strength, and flexural strength, making it suitable for engineering applications.

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Ultra-high-strength and ultra-high-toughness concrete with enhanced fiber-matrix interface bonding. The method involves optimizing the composition of ultra-high performance concrete to achieve superior fiber-matrix interface properties. The composition includes cement, silica fume, nano-calcium carbonate, fine aggregate, water, and a reducing agent. The concrete is formulated with a specific fiber volume content and a reducing agent to enhance the hydration reaction and improve the fiber-matrix interface. The resulting concrete exhibits improved fiber-matrix bonding, enhanced mechanical properties, and enhanced durability compared to conventional ultra-high performance concrete.

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A cement-based composite material that combines enhanced mechanical properties with improved durability through the incorporation of carbon nanotubes and carbon nano onions. The composite material achieves superior tensile strength while maintaining resistance to thermal shock, carbonization, and erosion, making it suitable for high-performance applications in concrete structures. The material preparation involves dispersing carbon nanotubes and carbon nano onions in a cement solution, followed by the addition of fillers to achieve the desired cement-to-filler ratio.

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Carbon nanotube agglutination mixed cement comprising pretreated carbon nanotubes and a method for manufacturing the same. The cement comprises pretreated carbon nanotubes and a method for manufacturing the same, wherein the pretreatment involves chemically colliding the carbon nanotubes with the cement raw material.

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