A Double-Blade Mixer for Concrete with Improved Mixing Quality

Ya, Yao; Zhou, Feng; Chen, Shibin; Li, Ben Q.; Zhao, Lijun; Zhao, Wang

doi:10.1007/s13369-016-2151-1

Cited by 13 publications

(5 citation statements)

References 14 publications

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“…The vibration action maximizes the UHPC slurry movement action through the conversion from electrical energy to mechanical energy and finally to concrete internal energy. The internal friction coefficient of the mixture decreases after vibration [32,54,55], and a more dispersed cement concrete system facilitates the generation of C-S-H, which has been proven to be a major hydration product and source of strength for Portland cement [56,57]. The vibration energy is maximized on the mix, and the mix close to the mixing shaft is strongly vibrated for easy mixing and homogeneity, overcoming the shortcomings of the inefficient zone that exists with traditional mixing methods [58,59].…”

Section: Mechanismsmentioning

confidence: 99%

Effect of a Novel Vibration Mixing on the Fiber Distribution and Mechanical Properties of Ultra-High Performance Concrete

et al. 2022

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A novel double-axis vibration mixing technology is presented to further enhance the performance of ultra-high performance concrete (UHPC). It improves the problem of inefficient zone in concrete mixing and enhances the homogeneity of concrete through the coupling of vibration and velocity fields during mixing. The X-CT scan results demonstrate that this novel technology improves the fiber distribution coefficient from 0.512 to 0.581. Moreover, the standard deviation of fiber orientation is reduced, the proportion of invalid fibers is decreased, and the pore space distribution is more uniform. The mechanical experimental results show that the new vibration mixing technology improves the mechanical properties of UHPC, and the percentage of early strength improvement is more significant; the impact compressive strength and the toughness of UHPC are also strengthened. The vibration mixing technology is expected to achieve the reduction of raw materials dosage with the same mechanical properties to reduce the cost and carbon emission.

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Section: Mechanismsmentioning

confidence: 99%

Effect of a Novel Vibration Mixing on the Fiber Distribution and Mechanical Properties of Ultra-High Performance Concrete

et al. 2022

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“…Stirring plays a vital role in improving the road performance of cement stabilized macadam. Yao and Zhao improved the blades of ordinary horizontal shaft stirring equipment to strengthen the microstructure and mechanical properties of cement stabilized macadam [5][6], and achieved obvious results. In recent years, vibration mixing technology and mixing equipment have developed rapidly and entered the stage of industrial application [7][8].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Performance and Base Compaction of Cement Stabilized Macadam with Vibration Mixing

Bing-chen

2022

J. Phys.: Conf. Ser.

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In order to improve the engineering application prospect of vibration mixing cement stabilized macadam, the performance of vibration mixing cement stabilized macadam and the compaction performance of base course are studied in this paper. The proportioning scheme of cement crushed stone stabilized soil is designed, and the proportioning of cement stabilized crushed stone is established by compaction method and testing compressive strength. Through the indoor test, the 7-day and 28-day unconfined compressive strength of ordinary mixing and vibration mixing are compared. The results show that the 7-day strength is increased by 38.6% and the 28-day strength is increased by 32.5%. The compaction test of ordinary mixing and vibration mixing cement stabilized macadam base is carried out. The research results show that the compactness of vibration mixing cement stabilized macadam after rolling for one time and final rolling is increased by 1.5% and 3.1% respectively. The research shows that the improvement of compaction technology of cement stabilized soil pavement under vibration mixing can improve the performance index of pavement and can be popularized.

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“…In the process of the production of CSRA, mixing is an indispensable and important process. Different mix parameters resulted in various performances of CSRA [3][4][5]. Han and Ferron [6] studied the relationship between mixing speed and hydration of cement pastes and found that higher speed mixing can increase the rate of cement hydration resulting in larger agglomerates.…”

Section: Introductionmentioning

confidence: 99%

“…Chang and Peng [3] prepared high-performance concrete by six mixing processes and found that workability can be improved by adding all superplasticizers in water during the mixing process. Yao et al [5] showed that the compress strength of concrete prepared by the double-blade mixer was higher than that prepared by the ordinary biaxial mixer. Feng [7] found that the vibration mixing process can make the mixture more uniform and improve the quality of the mixture.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Investigation on the Performance of Cement Stabilized Recycled Aggregate with the Vibration Mixing Process

Wang¹,

Zhang²,

Wang³

et al. 2020

Mathematical Problems in Engineering

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The objective of this article is to investigate the effect of the vibration mixing process (VMP) on the performance of cement stabilized recycled aggregate (CSRA). The ordinary mixing process (OMP) was also used for comparative analysis with the VMP. The performance of CSRA with different cement content was tested and comprehensively analyzed by the unconfined compressive strength test, dry shrinkage test, and temperature shrinkage test. The results showed that compared with OMP, VMP can greatly improve the compressive strength, dry shrinkage, and temperature shrinkage properties of CSRA. The optimum parameters of vibration time and vibration frequency in VMP were 30 s and 40 Hz, respectively. The reason why VMP can improve the performance of CSRA was that VMP strengthened the aggregate and interface transition zone and introduced microbubbles to optimize the pore structure.

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A Double-Blade Mixer for Concrete with Improved Mixing Quality

Cited by 13 publications

References 14 publications

Effect of a Novel Vibration Mixing on the Fiber Distribution and Mechanical Properties of Ultra-High Performance Concrete

Effect of a Novel Vibration Mixing on the Fiber Distribution and Mechanical Properties of Ultra-High Performance Concrete

Experimental Study on Performance and Base Compaction of Cement Stabilized Macadam with Vibration Mixing

Laboratory Investigation on the Performance of Cement Stabilized Recycled Aggregate with the Vibration Mixing Process

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