Results 21 to 30 of about 371,344 (316)

Determination of stresses in concrete lining with rock-bolt in case of exhaustion of rock-bolt supporting strength [PDF]

open access: yesMATEC Web of Conferences, 2019
The article deals with the solution of analytical problem of flat axisymmetric elasticity theory, when rock-bolt supporting strength is exhausted. Expression for determination of stresses in concrete lining is deduced, where pressure increasing at ...
Pleshko Marianna, Shornikov Ivan
doaj   +1 more source

Damage in Concrete and its Detection by Use of Stress-Volumetric Strain Diagram

open access: yesCivil and Environmental Engineering, 2014
The reliable determination of the damage degree of concrete in the structure is difficult and not seldom short-term compressive strengths are considered as real strengths of concrete.
Jerga Ján, Krajči Ľudovít
doaj   +1 more source

Numerical simulation of the behaviour of the lightweight concrete specimen in the laboratory testing [PDF]

open access: yesGrađevinski Materijali i Konstrukcije, 2019
This paper presents the numerical modelling of the experimental determination of the compressive strength and the static modulus of elasticity of the lightweight concrete using the finite element method (FEM). In the theoretical review, a concrete damage
Živaljević Vladimir   +3 more
doaj  

Investigation with Non-Destructive and Destructive Methods for Assessment of Concrete Compressive Strength

open access: yesApplied Sciences, 2022
Determining the compressive strength of concrete is important in all phases of construction and in diagnosing the technical condition of existing reinforced concrete buildings and facilities during their service.
Ivan Ivanchev
doaj   +1 more source

Prediction of ultimate stress in unbonded prestressed tendons [PDF]

open access: yes, 2004
The behaviour of prestressed concrete members with unbonded tendons is different from that of members with bonded tendons. While the behaviour of prestressed concrete beams with bonded tendons is characterised by that existing at individual sections ...
Au, FTK, Du, JS
core   +1 more source

Study of Physical and Mechanical Properties of Centrifuged Concrete

open access: yesНаука и техника, 2019
The paper presents a complex of laboratory and theoretical studies of physical and mechanical properties in centrifuged concrete while using samples of sectoral cross-section which are cut in layers from a finished product. A post made of concrete having
I. I. Palevoda   +3 more
doaj   +1 more source

Influence of mixing time of concrete mixtures on the deformational characteristics of structural concretes

open access: yesБудівельні конструкції: Теорія і практика
This scientific work is a continuation of studies [1] related to the determination of the class of structural concretes at different mixing times of the concrete mixture.
Олександер Конопляник   +1 more
doaj   +1 more source

Number of concrete strength tests using the elastic rebound method [PDF]

open access: yesBIO Web of Conferences
The article discusses the determination of the required number of experiments when determining the compressive strength of concrete using the elastic rebound method.
Kornilova Anna   +2 more
doaj   +1 more source

Theoretical-Experimental Aspects of Determining Concrete Strength

open access: yesInterdisciplinary Journal of Research and Development, 2022
Concrete strength is the property most valued by designers and quality control engineers. In rigid bodies, there is an inverse relationship between porosity (volume fraction of voids) and strength. Consequently, in multi-stage materials such as concrete, the porosity of each microstructure component can become limiting in durability. Natural aggregates
Indrit Vozga, Vladimir Kasemi
openaire   +1 more source

Pulverized Calcined Clay and Carbide Waste as Alternative Binder in Concrete and Mortar Applications for Sustainable Construction [PDF]

open access: yes, 2018
Portland cement (PC) based concrete is the world’s most consumed man-made material and this consequently puts lots of demand on cement as a binder.
Adebayo, Lameed   +7 more
core   +1 more source

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