RU2010110178A - ULTRASONIC METHOD OF CONTROL OF THE CONCRETE ELASTICITY MODULE IN CONCRETE AND REINFORCED CONCRETE STRUCTURES - Google Patents
ULTRASONIC METHOD OF CONTROL OF THE CONCRETE ELASTICITY MODULE IN CONCRETE AND REINFORCED CONCRETE STRUCTURES Download PDFInfo
- Publication number
- RU2010110178A RU2010110178A RU2010110178/28A RU2010110178A RU2010110178A RU 2010110178 A RU2010110178 A RU 2010110178A RU 2010110178/28 A RU2010110178/28 A RU 2010110178/28A RU 2010110178 A RU2010110178 A RU 2010110178A RU 2010110178 A RU2010110178 A RU 2010110178A
- Authority
- RU
- Russia
- Prior art keywords
- concrete
- samples
- average
- modulus
- elasticity
- Prior art date
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Ультразвуковой способ контроля модуля упругости бетона в бетонных и железобетонных конструкциях сооружений, включающий измерение скорости ультразвука на бетонных образцах - призмах квадратного сечения или цилиндрах круглого сечения с отношением высоты к ширине (диаметру), равным 4, и материале конструкций, механические испытания образцов бетона при действии на них циклично-ступенчатой осевой сжимающей нагрузки до уровня 30% разрушающей нагрузки на гидравлическом прессе, тензометрические испытания по определению приращения упруго-мгновенной относительной, продольной деформации образцов бетона при уровне нагрузки, равной 30% разрушающей нагрузки, построение градуировочной зависимости «скорость ультразвука - модуль упругости бетона» по результатам ультразвуковых, тензометрических и механических испытаний образцов бетона и определение модуля упругости бетона конструкции по результатам ультразвуковых измерений и предварительно построенной градуировочной зависимости, отличающийся тем, что определяют по различным сериям образцов бетона среднюю влажность испытанных образцов бетона, среднюю скорость распространения ультразвука в бетонных образцах, а также средний модуль упругости образцов бетона и среднюю влажность бетона контролируемой зоны в конструкции сооружения, после чего величину модуля упругости бетона в конструкции устанавливают из зависимостей: ! ; ! ; ! ; ! - коэффициент, учитывающий влияние влажности бетона на скорость прохождения в нем ультразвука; ! ; ! ; ! , ! где k1=кгс/см2, k2=1/ln (кгс/см2), k3=1/[(1-м/с)·ln (кгс/см2)] - коэффициент размерности; ! e=2,71828… - основание натуральных логарифмов; ! - мод� An ultrasonic method for monitoring the modulus of elasticity of concrete in concrete and reinforced concrete structures of structures, including measuring the speed of ultrasound on concrete samples - square prisms or round cylinders with a height to width (diameter) ratio of 4 and the material of structures, mechanical testing of concrete samples under action on them a cyclic-step axial compressive load up to the level of 30% of the breaking load on the hydraulic press, tensometric tests to determine the increment of elastic-mn the relative relative longitudinal deformation of concrete samples at a load level equal to 30% of the breaking load, the construction of the calibration dependence "ultrasound speed - modulus of elasticity of concrete" according to the results of ultrasonic, tensometric and mechanical tests of concrete samples and the determination of the modulus of elasticity of concrete construction according to the results of ultrasonic measurements and preliminary constructed calibration dependence, characterized in that they determine the average humidity tested by different series of concrete samples x concrete samples, the average speed of ultrasound propagation in concrete samples, as well as the average modulus of elasticity of concrete samples and the average humidity of concrete in the controlled area in the structure of the structure, after which the value of the elastic modulus of concrete in the structure is determined from the dependencies:! ; ! ; ! ; ! - coefficient taking into account the effect of humidity of concrete on the speed of passage of ultrasound in it; ! ; ! ; ! ! where k1 = kgf / cm2, k2 = 1 / ln (kgf / cm2), k3 = 1 / [(1 m / s) · ln (kgf / cm2)] is the dimension coefficient; ! e = 2.71828 ... - the base of the natural logarithms; ! - mod
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2010110178/28A RU2442153C2 (en) | 2010-03-17 | 2010-03-17 | Method for ultrasonic inspection of concrete resilience in concrete and reinforced cocrete constructions |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2010110178/28A RU2442153C2 (en) | 2010-03-17 | 2010-03-17 | Method for ultrasonic inspection of concrete resilience in concrete and reinforced cocrete constructions |
Publications (2)
Publication Number | Publication Date |
---|---|
RU2010110178A true RU2010110178A (en) | 2011-09-27 |
RU2442153C2 RU2442153C2 (en) | 2012-02-10 |
Family
ID=44803486
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU2010110178/28A RU2442153C2 (en) | 2010-03-17 | 2010-03-17 | Method for ultrasonic inspection of concrete resilience in concrete and reinforced cocrete constructions |
Country Status (1)
Country | Link |
---|---|
RU (1) | RU2442153C2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2707984C1 (en) * | 2019-04-26 | 2019-12-03 | федеральное государственное автономное образовательное учреждение высшего образования "Южно-Уральский государственный университет (национальный исследовательский университет)" | Method of determining fire resistance of construction materials and structural elements |
-
2010
- 2010-03-17 RU RU2010110178/28A patent/RU2442153C2/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
RU2442153C2 (en) | 2012-02-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20150338380A1 (en) | Assessing Corrosion Damage in Post-Tensioned Concrete Structures Using Acoustic Emission | |
CN105300801A (en) | Evaluation method of self-repairing effect of self-repairing cement-based material | |
Sharma et al. | Development of probabilistic fatigue curve for asphalt concrete based on viscoelastic continuum damage mechanics | |
Zhang et al. | Damage characteristics and assessment of corroded RC beam-column joint under cyclic loading based on acoustic emission monitoring | |
Shao et al. | Electrical method to evaluate elastic modulus of early age concrete | |
Zimmermann et al. | Correlation among selected fracture‐mechanical parameters of concrete obtained from experiments and inverse analyses | |
Ramirez-Garcia et al. | Effect of concrete compressive strength on transfer length | |
KR101315692B1 (en) | Prestress force assessment methodology of bonded tendon using stress wave velocity by impact | |
Singh et al. | Prediction of compressive strength using artificial neural network | |
RU2010110178A (en) | ULTRASONIC METHOD OF CONTROL OF THE CONCRETE ELASTICITY MODULE IN CONCRETE AND REINFORCED CONCRETE STRUCTURES | |
RU2483214C1 (en) | Method for determining specific surface energy of destruction of solid bodies | |
Liu et al. | Correlation between acoustic emission distribution and stress variation through the depth of RC beam cross sections | |
Pestka et al. | Influence of wood moisture on strength and elastic modulus for pine and fir wood subjected to 4-point bending tests | |
Azenha et al. | Continuous stiffness monitoring of cemented sand through resonant frequency | |
CN203551275U (en) | Portable in-service electric pole concrete compressive strength field measuring instrument | |
Řoutil et al. | Experimental-computational determination of mechanical fracture parameters of concrete for probabilistic life-cycle assessment | |
Yu et al. | Study on AE characteristics of concrete with different w/c ratio under uniaxial compression | |
Liao et al. | Structural health monitoring of a concrete column subjected to shake table excitations using smart aggregates | |
Kaji et al. | Mechanical properties of saturated concrete depending on the strain rate | |
Srinivasan et al. | Effect of Crack Width, Density, and Depth on Strength and Durability of Concrete-Equivalent Mortar. | |
CN103912026B (en) | A kind of mechanical index of the Double lumen intubation data based on BP neural network determines method | |
RU2012145523A (en) | METHOD FOR DETERMINING MECHANICAL PROPERTIES OF METALS | |
RU2262687C1 (en) | Ultrasonic method of inspection of strength of concrete in concrete and ferroconcrete structures during exploitation | |
CN107367377B (en) | Reinforced Concrete Members with Flexure bearing capacity evaluation method based on sound emission Ring-down count | |
Faria et al. | Discussion: Pull-out and push-in tests of bonded steel strands |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20120318 |