Technology of the Early Age Concrete Loading

Baiburin, A Kh

doi:10.1016/j.proeng.2016.07.257

Cited by 6 publications

(2 citation statements)

References 2 publications

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“…Yia and Kim investigated the effect of concrete strength and age on the stress-strain curves of concrete, proposing a more reasonable mold that accurately predicted the ascending branch of the stress-strain curve and the descending branch within a minimum deviation range [9]. Based on experimental research, the formulas for calculating the required strength to the loading moment of monolith foundations, walls, columns, and coverings were suggested by Baiburin [10]. The designing of the early loading technology was given, and the results of the in-place earlyage covering loading tests were presented.…”

Section: Introductionmentioning

confidence: 99%

Influence of Early Age on the Wave Velocity and Dynamic Compressive Strength of Concrete Based on Split Hopkinson Pressure Bar Tests

Wang

Dong

Zhou

2018

Shock and Vibration

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The effect of early age on the mechanical properties of concrete was investigated in this study. A uniaxial compression test was performed on split Hopkinson pressure bar (SHPB) equipment with a large diameter of 75 mm. The experimental results indicated that before 7 days, concrete showed viscoelasticity and had good deformation ability and low sensitivity to incident energy. In addition, the concrete exhibited the characteristics of quasi-brittle materials, and the sensitivity of the incident energy improved with age. The threshold value of the incident energy at early ages had an insignificant effect on the stable age concrete. The threshold value was 50% of the corresponding age’s critical incident energy, while it was 75% after 7 days.

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Section: Introductionmentioning

confidence: 99%

Influence of Early Age on the Wave Velocity and Dynamic Compressive Strength of Concrete Based on Split Hopkinson Pressure Bar Tests

Wang

Dong

Zhou

2018

Shock and Vibration

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“…[14]. Some recommendations on implementation of this technology for increase of early strength and acceleration of construction work have been given in the later writings [16][17][18]. Interest in the subject is also evident in some works of foreign scientists [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

X-Ray Phase Analysis of High-Aluminate Cements under Conditions of early Compression

Galkin

Udodov

2018

SSP

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Study of the structure of cementitious composites under conditions of early-age compression is essential for development of measures to improve their response to mechanical and physical impact at the earliest stage of hardening. The article considers the influence of early-age compression on the structure of high-aluminate cement which has been studied using X-ray phase analysis. Concrete mixes with different water-cement ratio have been designated as targets for research. It has been established that the age of the cement to the moment of load application impacts on composition of formed hydrates, as well as on amorphousness of the structure of high-alumina cement stone. Compression at a very early age leads to an increase in the number of peaks related to hexagonal hydroaluminates and aluminum hydroxide. Load impact results in various recrystallization behaviors. Transformation of hexagonal hydroaluminates into cubical ones is proceeding faster with growth of water-cement ratio in the samples under compression. This is illustrated by an increase of a number of related peaks in X-ray patterns. Notation: C=CaO; A=Al2O3; H=H2O; S=SiO2; M=MgO.

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Influence of Orientation of Cement Stone Loaded at Early Age on Strength Properties

Galkin

Udodov

2019

Advances in Intelligent Systems and Computing

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Technology of the Early Age Concrete Loading

Cited by 6 publications

References 2 publications

Influence of Early Age on the Wave Velocity and Dynamic Compressive Strength of Concrete Based on Split Hopkinson Pressure Bar Tests

Influence of Early Age on the Wave Velocity and Dynamic Compressive Strength of Concrete Based on Split Hopkinson Pressure Bar Tests

X-Ray Phase Analysis of High-Aluminate Cements under Conditions of early Compression

Influence of Orientation of Cement Stone Loaded at Early Age on Strength Properties

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