RU2007100478A - METHOD FOR DETERMINING THE ELASTICITY MODULE AND THE CREEP CHARACTERISTICS OF CONCRETE AND MORTARS - Google Patents

METHOD FOR DETERMINING THE ELASTICITY MODULE AND THE CREEP CHARACTERISTICS OF CONCRETE AND MORTARS Download PDF

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RU2007100478A
RU2007100478A RU2007100478/03A RU2007100478A RU2007100478A RU 2007100478 A RU2007100478 A RU 2007100478A RU 2007100478/03 A RU2007100478/03 A RU 2007100478/03A RU 2007100478 A RU2007100478 A RU 2007100478A RU 2007100478 A RU2007100478 A RU 2007100478A
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load
sample
creep
measure
concrete
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RU2007100478/03A
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RU2339945C2 (en
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Григорий Васильевич Несветаев (RU)
Григорий Васильевич Несветаев
Ирина Александровна Шубина (RU)
Ирина Александровна Шубина
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Григорий Васильевич Несветаев (RU)
Григорий Васильевич Несветаев
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Abstract

Способ определения модуля упругости и характеристики ползучести бетонов и растворов, включающий нагружение исследуемого образца на изгиб поочередно грузами разной величины, измерение максимальных прогибов образца в направлении действия нагрузки и определение расчетным путем модуля упругости материала, отличающийся тем, что нагружение образца осуществляют пятью грузами; определение области условно-линейной зависимости «нагрузки - прогиб», затем нагружают грузом, выбранным для определения модуля упругости, в течение до 180 сут и периодически измеряют максимальные прогибы образца в направлении действия нагрузки, определяют характеристику и меру ползучести по формулегде ϕ - мера ползучести бетона; fи f- соответственно величина прогиба образца в возрасте 180 сут и при измерении модуля упругости, величину меры ползучести определяют по формулегде Е - модуль упругости.A method for determining the elastic modulus and creep characteristics of concrete and mortars, including alternately loading the test specimen by bending with loads of different sizes, measuring the maximum deflection of the sample in the direction of the load and calculating the modulus of elasticity of the material, characterized in that the sample is loaded with five weights; determination of the area of the conditionally linear dependence “load - deflection”, then load with the load selected to determine the elastic modulus for up to 180 days and periodically measure the maximum deflection of the sample in the direction of the load, determine the characteristic and creep measure by the formula ϕ - measure of creep of concrete ; f and f-, respectively, the amount of deflection of the sample at the age of 180 days and when measuring the elastic modulus, the magnitude of the creep measure is determined by the formula where E is the elastic modulus.

Claims (1)

Способ определения модуля упругости и характеристики ползучести бетонов и растворов, включающий нагружение исследуемого образца на изгиб поочередно грузами разной величины, измерение максимальных прогибов образца в направлении действия нагрузки и определение расчетным путем модуля упругости материала, отличающийся тем, что нагружение образца осуществляют пятью грузами; определение области условно-линейной зависимости «нагрузки - прогиб», затем нагружают грузом, выбранным для определения модуля упругости, в течение до 180 сут и периодически измеряют максимальные прогибы образца в направлении действия нагрузки, определяют характеристику и меру ползучести по формулеA method for determining the elastic modulus and creep characteristics of concrete and mortars, including alternately loading the test specimen by bending with loads of different sizes, measuring the maximum deflection of the sample in the direction of the load and calculating the modulus of elasticity of the material, characterized in that the sample is loaded with five weights; determining the area of the conditionally linear dependence “load - deflection”, then load with the load selected to determine the elastic modulus for up to 180 days and periodically measure the maximum deflection of the sample in the direction of the load, determine the characteristic and measure of creep according to the formula
Figure 00000001
Figure 00000001
 где φ - мера ползучести бетона; f180 и fel - соответственно величина прогиба образца в возрасте 180 сут и при измерении модуля упругости, величину меры ползучести определяют по формулеwhere φ is a measure of creep of concrete; f 180 and f el - respectively, the amount of deflection of the sample at the age of 180 days and when measuring the modulus of elasticity, the magnitude of the creep measure is determined by the formula
Figure 00000002
Figure 00000002
 где Е - модуль упругости.where E is the modulus of elasticity.
RU2007100478/03A 2007-01-09 2007-01-09 Calculation method of elasticity modulus and concrete and mortar creep properties RU2339945C2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109902423A (en) * 2019-03-08 2019-06-18 浙江大学建筑设计研究院有限公司 The modeling reliability method and prediction technique of mortar elasticity modulus under different temperatures

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109902423A (en) * 2019-03-08 2019-06-18 浙江大学建筑设计研究院有限公司 The modeling reliability method and prediction technique of mortar elasticity modulus under different temperatures

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