Search
Now showing items 1-10 of 15
Boundary Layer Effect on Behavior of Discrete Models
(MDPI, 2017-02-10)
The paper studies systems of rigid bodies with randomly generated geometry interconnected by normal and tangential bonds. The stiffness of these bonds determines the macroscopic elastic modulus while the macroscopic ...
Characteristic Curve and Its Use in Determining the Compressive Strength of Concrete by the Rebound Hammer Test
(MDPI, 2019-08-23)
During the construction of concrete structures, it is often useful to know compressive strength at an early age. This is an amount of strength required for the safe removal of formwork, also known as stripping strength. ...
Nondestructive Testing of Advanced Concrete Structure during Lifetime
(Hindawi Publishing Corporation, 2015-07-08)
The paper reports on measurements and analysis of the measurements during hardening and drying of specimens using selected acoustic nondestructive testing techniques. An integrated approach was created for better understanding ...
Determining reinforcement coverage using an electromagnetic rebar detector
(IOP Publishing, 2018-07-16)
Correct reinforcement is an essential part of constructing reinforced concrete structures. Errors in positioning, diameter, or coverage may result in defects, which is why it is necessary to make sure the reinforcement is ...
Life Cycle Assessment Optimization of a Shotcrete Tunnel Lining
(IOP Publishing, 2018-11-27)
The proposed contribution describes the formulation of the optimization design of a utility tunnel lining. The objective function is defined as a multicriterial problem and includes economic and environmental aspects ...
Monitoring of concrete hydration by electrical measurement methods
(Elsevier, 2016-08-01)
Analysis of impedance spectra of inhomogeneous materials is a part of the impedance spectroscopy which is still waiting for its development. Materials having higher electric resistance values (over 500 kohm) can be considered ...
Study of a different carbonation intensity on the internal surface of cracks and inside concretes with dense aggregate and concrete recyclate
(IOP Publishing, 2018-07-16)
The paper focuses on the experimental physical-chemical analysis of different carbonation intensity by TG/DTG and FTIR method on the selected surfaces of concretes with aggregate and with concrete recyclate, with and without ...
The bond strength by pull-off and direct tensile strength of concrete damaged by elevated temperatures
(IOP Publishing, 2018-07-16)
This paper presents the results of an experimental study of selected characteristics of
concrete following its exposure to high temperatures. The monitored parameter was the
influence of high temperatures on the bond ...
Behaviour of cement composites with lightweight and heavyweight aggregates at high temperatures
(Budapest University of Technology and Economics, 2017-03-24)
This paper presents new results of the research of the influence
of individual input components done on the behaviour of cement
based composite materials exposed to high temperatures. A
new approach of this research lies ...
Flexure response of thermal loaded concrete specimens by acoustic emission method
(EDP Sciences – Web of Conferences, 2017-05-24)
The response to fire of concrete structural members depends on the thermal, mechanical, and deformation properties of concrete. These properties vary significantly with temperature depending on the composition and ...