Self Compacting Concrete Rheology Optimization

Self-compacting concrete with enhanced workability for wall panel production. The concrete contains a specific ratio of cement, polycarboxylic acid, early strength agent, water, fly ash, crushed stone, sand, and hydroxyethyl cellulose thickener. This composition balances high fluidity and stability, enabling rapid self-compaction while maintaining workability. The thickener enhances concrete flow characteristics without compromising strength. The resulting concrete exhibits superior workability compared to conventional self-compacting concrete, facilitating efficient production of wall panels with minimal retardants.

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A self-compacting concrete that improves workability and bonding between aggregate and cement matrix during concrete production. The invention introduces a novel additive system that enhances aggregate cohesion while maintaining optimal cement hydration conditions. This additive system, comprising a proprietary blend of natural and synthetic components, is specifically formulated to address the challenges of conventional self-compacting concrete formulations. By optimizing aggregate particle cohesion and cement hydration, the additive system enables improved workability and bonding between aggregate and cement matrix, resulting in enhanced concrete performance and reduced segregation.

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Self-compacting concrete (SCC) that eliminates the need for mechanical vibration during placement, enhancing construction efficiency and reducing labor costs. The composition achieves flowability and consolidation under its own weight through optimized cementitious material, fine and coarse aggregate mixtures, superplasticizer, viscosity-modifying agent, and air entraining agent. The composition maintains homogeneity and uniformity during placement and hardening, with superior strength and durability compared to conventional SCC.

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High fluidity self-compacting concrete for filling slab ballastless track in high-speed rail applications. The concrete has improved flowability, segregation resistance, and steel bar penetration compared to standard self-compacting concrete. It allows pouring without vibration into narrow cavities with obstructions. The concrete composition includes optimized ratios of cement, fly ash, silica fume, expansion agent, sand, coarse aggregate, water reducer, and sensitivity modifier.

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Self-compacting concrete with improved mechanical properties through the replacement of aluminum dihydrogen phosphate with copper acetate in the expansion agent. The formulation achieves enhanced compressive resistance while maintaining the required water-cement ratio and sand content. The replacement of aluminum dihydrogen phosphate with copper acetate in the expansion agent enables the concrete to exhibit improved mechanical properties, including higher compressive strength and resistance to cracking.

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Self-compacting concrete that achieves uniform density and strength through controlled mixing and curing processes. The concrete comprises cement, fly ash, expansion agent, water, sand, and gravel, with specific weight percentages and additives. The mixing process is optimized to achieve the optimal hydration time between 3-5 minutes, ensuring uniform hydration and density. The concrete's microstructure is engineered to prevent water seepage and cracking through precise control of cement hydration and expansion agent dosage. The concrete's performance is further enhanced through the use of additives like HNTK-1 viscosity modifier and PCA-VIII water-reducing agent.

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Self-compacting concrete preparation method that enhances workability and concrete properties through controlled shear thinning and thickening effects. The method involves a two-step process where the concrete is prepared with a shear thickener first, followed by a shear thinner. The thickener increases viscosity, while the thinner reduces it. This controlled transition enables improved workability and concrete performance compared to conventional methods. The thickener and thinner agents are combined in a specific order to achieve optimal effects.

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A self-compacting concrete design method that optimizes rheological properties through a unified approach. The method combines empirical and mathematical approaches to predict self-compacting concrete's rheological behavior, including yield stress and plastic viscosity. By analyzing aggregate properties and cement properties, the method calculates the rheological behavior of the self-compacting concrete, enabling rapid optimization of mix proportions. This approach addresses the complex interaction between cement, aggregate, and mortar phases, providing a comprehensive understanding of the self-compacting concrete's rheological properties.

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Self-compacting concrete for rail top air ducts that achieves rapid pumping and high compressive strength through a novel locust bean gum-based additive. The additive enhances the concrete's fluidity immediately after mixing, allowing rapid filling of formwork and wrapping of steel bars. The concrete exhibits superior compressive strength upon curing, meeting the requirements for rail top air ducts. This innovative additive enables efficient construction of these critical components while maintaining high performance throughout the curing process.

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High-strength, low-viscosity thickened self-compacting concrete that maintains consistent density and flowability even under high fluidity and low viscosity conditions. The concrete combines cementitious material, a viscosity-reducing and thickening admixture, and specific aggregate compositions to achieve optimal performance. The preparation method involves precise optimization of cement-to-aggregate ratios, admixture-to-cement ratios, and aggregate-to-liquid ratios to achieve the desired properties.

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Self-compacting concrete for bridge construction that improves durability and maintenance resistance through enhanced fiber reinforcement. The innovative concrete formulation combines fly ash, slag, and silicon micropowder with a surface treatment agent to improve fiber bonding and reduce fiber degradation. The treatment agent forms a protective coating on the fiber surface, enhancing its performance in self-compacting concrete while preventing fiber degradation. This formulation enables bridge decks to maintain their structural integrity even under harsh environmental conditions, reducing maintenance requirements and improving overall bridge performance.

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A self-compacting concrete preparation method that enhances durability through controlled porosity management. The method involves creating a porous ceramsite through a controlled sintering process that incorporates organic materials like straw debris, nano-calcium carbonate, and chitosan. The ceramsite is then impregnated with chitosan, which enhances its adsorption properties while opening closed pores during sintering. This results in a self-compacting concrete with improved mechanical properties, enhanced water absorption capacity, and enhanced bonding between cement, aggregates, and organic materials.

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Self-compacting concrete that enhances its mechanical properties through a novel combination of fly ash, maleic acid, and hyperbranched polyesters. The concrete formulation incorporates a specific ratio of fly ash, maleic acid, and hyperbranched polyesters that enables the formation of a stable inorganic-organic composite network skeleton. This network structure provides superior load transmission and compressive strength, while maintaining enhanced tensile strength and reduced shrinkage compared to conventional self-compacting concrete.

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Low cementitious self-compacting concrete with improved workability and durability. The composition comprises a balanced mix of slaked lime, sodium hydroxide, propionate milk, acrylic acid ester copolymer emulsion, and water, with specific proportions of additives to enhance the concrete's fluidity and stability. The formulation achieves a balance between high fluidity and high stability, enabling self-compaction while maintaining mechanical properties and durability.

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High-strength self-compacting concrete with enhanced durability through improved workability and shrinkage control. The concrete combines cement, fly ash, ultrafine slag powder, bentonite, and natural fibers to achieve exceptional workability and self-shrinkage properties. The formulation includes a water-reducing agent, expansion agent, and specific surface area-enhancing ultrafine slag powder to optimize concrete performance. The natural fiber content can be adjusted to achieve optimal strength and durability. The concrete's unique composition enables it to fill complex shapes without vibration, making it suitable for critical infrastructure applications like foundations and high-performance concrete structures.

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Self-compact concrete with improved fluidity and strength properties. The concrete incorporates microcapsules that dissolve in water, creating a network effect that enhances concrete flow while maintaining its strength. The microcapsules are prepared through a controlled process involving sieving of the raw materials, followed by addition of the microcapsules to the concrete mixture. This controlled release of microcapsules enhances the concrete's self-compactability while maintaining its mechanical properties.

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Self-compacting concrete with improved workability and durability through a novel admixture system. The concrete combines cement, polyacrylamide, sand, crushed stone, iron slag, sodium pyrophosphate, fly ash, mineral powder, and admixtures with specific additives. The formulation provides enhanced workability and resistance to vibration-induced defects, while maintaining high compressive strength.

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Designing self-compacting concrete mix for high-speed railway ballastless track structures that meets stability requirements through optimized mix composition. The method involves analyzing the relationship between self-compacting concrete stability and its constituent properties, specifically the water reducing agent content, to determine the optimal mix design parameters. This approach enables the creation of self-compacting concrete mixes that meet the stringent requirements of CRTS-type ballastless track structures, particularly in high-speed railway applications where precise control of the filling layer is critical for track stability and durability.

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Self-compacting concrete with enhanced performance through a novel water-reducing agent. The agent achieves a water-reducing rate of 16.5% through a polycarboxylic acid type, enabling self-compacting concrete without traditional water-reducing agents. This agent is compatible with conventional cement, fly ash, and slag, and can be used in conventional mixing processes. The resulting self-compacting concrete exhibits improved workability and reduced labor requirements compared to conventional self-compacting concrete.

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Self-compacting concrete with enhanced strength, durability, and flow characteristics through the addition of a shrinkage reducing agent. The agent, comprising sulfoaluminate and diethylene glycol butyl monoether, promotes hydration of cement, fly ash, and mineral powder, while simultaneously controlling shrinkage. This combination enables the concrete to achieve improved flow properties, complete formwork filling, and enhanced anti-cracking performance, while maintaining the self-compacting characteristics of conventional concrete.

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Self-compacting concrete that achieves high fluidity, uniformity, and stability through a novel combination of sodium polyacrylate and sodium laurate. The concrete formulation incorporates these components in a multi-stage mixing process, enabling self-compaction without vibration. The sodium polyacrylate and sodium laurate work together to fill concrete pores, reduce carbon dioxide penetration, and promote gelation, resulting in improved concrete strength and reduced cracking. The self-compacting concrete achieves enhanced pumping performance and reduced water requirements compared to conventional methods.

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Green self-compacting concrete that achieves superior working properties through optimized cement content reduction. The method employs a compressible accumulation model to precisely balance cement and aggregate ratios, ensuring sufficient workability while minimizing cement content. The concrete composition includes 70% cement and 30% fly ash, with a focus on replacing medium sand with ultra-fine sand powder to enhance compaction. The formulation combines theoretical analysis with experimental testing to optimize the cement content ratio for optimal performance while minimizing environmental impact.

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Concrete with improved flowability through enhanced settlement properties, achieved by combining cement dispersants of polycarboxylate comb type polymers with viscosity-modifying agents. The combination enables stable flow characteristics without excessive aggregate content, while maintaining high settlement flow parameters. The polymers enhance initial consistency and yield stress, while the viscosity-modifying agents control flow behavior. The combination provides superior placement control compared to conventional ready-mix concrete, particularly in applications requiring rapid placement.

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Self-compacting concrete composition for enhanced durability and flow characteristics, particularly suitable for low-powder concrete applications. The composition comprises a fluidity-enhancing agent, a urethane associative thickener, and an acrylic associative thickener, with the fluidity-enhancing agent having a concentration of 50-150 parts by weight. The composition also includes a solid content and optional additives such as humectants, hydroxyethyl cellulose, and benzalkonium chloride. The composition enables self-compacting concrete with improved flow characteristics while maintaining sufficient strength.

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Self-compacting concrete admixture for improved workability and durability of concrete mixes. The admixture combines diisopropyl azodicarboxylate/azodicarbonate with polyoxyethylene sorbitan fatty oleate and nano-zinc oxide, which enhance cement expansion control, reduce early expansion, and improve workability. The combination provides enhanced self-compaction characteristics while maintaining adequate workability and strength.

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Self-compacting concrete composition for forming self-compacting concrete, which enables the production of thin slabs, tiles, and blocks without vibration compaction. The composition comprises a self-compacting chemical admixture to enhance flowability and stability, with a specific weight ratio of water to cement that provides optimal workability and hardened concrete properties. The composition achieves the desired flow characteristics and workability retention through a unique particle size distribution and aggregate grading that ensures uniform suspension of solid particles during placement and consolidation.

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C70 self-compacting concrete that achieves high strength through the use of basalt as a reinforcement material, combined with controlled cementing and water content. The concrete formulation incorporates basalt with a high strength-to-weight ratio, combined with cement, aggregates, and additives to achieve improved workability and durability. The concrete is prepared through a simplified process that eliminates the need for vibration and infusion processes, resulting in a more consistent and reliable construction material.

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Self-compacting concrete with enhanced flowability and compaction performance, achieved through a novel admixture formulation that significantly reduces cement content while maintaining superior flowability and workability properties. The formulation comprises water-reducing agents, antifoaming agents, and a reinforcing agent in a mass ratio of 1:0.0025:0.175, resulting in a self-compacting concrete that can fill formwork completely without additional vibration concrete.

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Low-density, high-strength concrete that combines the benefits of reduced weight with enhanced structural performance. The concrete achieves its exceptional properties through the strategic incorporation of lightweight aggregate, specifically glass microspheres and polymer beads, which provide superior strength-to-weight ratios while maintaining excellent segregation resistance and thermal conductivity. This innovative combination enables the production of self-compacting concrete with compressive strengths comparable to traditional structural concretes, while maintaining a density below 90 lb/cu.ft.

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Self-compacting concrete with enhanced compressive strength through a novel preparation method. The concrete combines a specific ratio of cement, sand, stone, and admixtures with an ultrafine powder and modifier, which are combined in a controlled process to produce a self-compacting concrete with superior compressive strength. The preparation process involves heating the ultrafine powder mixture to a specific temperature, followed by the addition of fluorinated carboxylic acid and a controlled reaction time. This combination enables the concrete to achieve the desired compressive strength while maintaining its fluidity.

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Ecological self-compacting concrete with improved performance characteristics, enabling construction projects to achieve high-quality concrete while minimizing environmental impact. The composition comprises a specific ratio of coarse aggregate, fine aggregate, and micro-aggregate, with controlled cement content and admixture levels. The superplasticizer dosage is optimized to enhance workability while maintaining the rheological properties of the cementitious material. The polymeric rheology modifier content is carefully controlled to balance workability and strength. The resulting self-compacting concrete exhibits improved flowability, reduced segregation, and enhanced workability compared to conventional self-compacting concrete.

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Self-compact concrete with enhanced working properties that compensates for shrinkage without compromising slump retention. The concrete combines a self-compacting formulation with an optimized cementitious composition that balances cement hydration with dilatancy agent performance, ensuring consistent flow characteristics while maintaining compressive strength.

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Self-compacting concrete with enhanced mechanical properties and durability, achieved through a novel admixture system that balances mobility and separation resistance. The system combines a water-reducing agent with a polyacid retarder and a silica fume additive, which work together to improve workability and reduce concrete flow while maintaining its strength and durability. This innovative combination enables self-compacting concrete to achieve superior workability, resistance to separation, and improved mechanical properties compared to conventional self-compacting systems.

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Viscosity modifier for self-compacting concrete that enhances flowability and filling properties by modifying the concrete's rheological behavior. The modifier, designated as WHDF-N, specifically targets the cement-aggregate interface to improve concrete flowability and segregation resistance, enabling denser and more uniform concrete structures.

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Self-compacting concrete that achieves complete form filling through enhanced flowability. The concrete combines cement, a specialized admixture, ceramic sand, crushed stone, and a controlled amount of a composite admixture to create a unique mix ratio. The admixture enhances cement-particle friction, significantly reducing water consumption while maintaining optimal flow properties. This combination enables self-compacting concrete that can fill complex shapes without additional vibration, while maintaining durability and homogeneity.

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Self-compacting concrete with high compressive strength (100 MPa at 28 days) that maintains its self-compacting properties. The composition comprises metakaolin, limestone filler, silica fume, and ground metakaolin, with a fine aggregate ratio of 40-80 kg/m³. The silica fume content is between 45-75 kg/m³, and the metakaolin content is between 45-75 kg/m³. The composition is formulated at room temperature (10-35°C) to achieve optimal workability and pumpability. This self-compacting concrete can be used in prestressed and post-tensioned structures, bridges, tunnels, foundations, buildings, nuclear reactors, accumulators, and storage tanks, particularly for thermal storage applications.

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