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Sustainability Levels in Comparison with Mechanical Properties and Durability of Pumice High-Performance Concrete
(MDPI, 2021-05-28)In the production of cement and concrete, mechanical and durable properties are essential, along with reasonable cost and sustainability. This study aimed to apply an evaluation procedure of the level of sustainability of ... -
Numerical analysis of a semi-circular disc with an angled crack loaded in mixed-mode
(Koszalin University of Technology Publishing House, 2020-05-06)A semi-circular disc with an angled crack loaded in mixed-mode (mode I + II) was chosen for a numerical analysis of crack deflection angles. Although the mode I of loading is often dominant in engineering praxis, lots of ... -
Analysis of Acoustic Emission Signals Recorded during Freeze-Thaw Cycling of Concrete
(MDPI, 2021-03-05)This manuscript deals with a complex analysis of acoustic emission signals that were recorded during freeze-thaw cycles in test specimens produced from air-entrained concrete. An assessment of the resistance of concrete ... -
Properties of cement-based composites with carbon mineral admixture
(IOP Publishing, 2020-12-09)In the construction industry, aggregates, in the form of fine powder up to gravel, play a significant role as a stabilizing and filling materials for many applications. With increasing demands on quarrying of this valuable ... -
The influence of biochar addition on the strength and microstructural chraracteristics of cement pastes
(IOP Publishing, 2020-12-09)Nowadays, many branches of civil engineering begin to suffer from the lack of natural high-quality resources. The cement industry is one of the main consumers of such raw materials and, moreover, significantly contributes ... -
Strength characteristics of concrete exposed to the elevated temperatures according to the temperature-time curve ISO 834
(EDP Sciences, 2017-05-24)While exposed to high temperatures caused by fire, the concrete undergoes a sequence of physical and chemical structure changes causing a mechanical degradation. This paper concerns an experimental strength determination ... -
Fracture parameters of concrete after exposure to high temperatures: pilot tests
(EDP Sciences, 2017-05-24)Experimental concrete panels were after an appropriate aging time loaded by high temperatures (550, 600, 800 and 1000 °C) in a furnace intended for fire tests of building materials. These panels were heated according to ... -
The experimental comparison of parameters signals of acoustic emission during destructive test on composites based on cement
(MATEC Web of Conferences, 2018-10-29)The paper reports the analysis of acoustic emission signals captured during compressive strength tests of fine-grained cement-based composites of various composition. Acoustic emission monitoring belongs to a non-invasive ... -
The influence of fibre pre-treatment on the mechanical properties of the geopolymer composites
(EDP Sciences, 2020-10-14)This article aims to analyse the long-term influence of the pretreatment method on mechanical properties such as the compressive strength of geopolymer composites reinforced with short natural fibres (length of around 5 ... -
Non-traditional Approach to the Evaluation of the Freeze-thaw Resistance of Concrete based on the Fracture Tests
(EDP Sciences, 2020-10-14)The paper deals with a pilot study focused on the freeze-thaw (F-T) resistance of concrete. A non-traditional approach to the evaluation of the F-T resistance of concrete based on the determination of the fracture parameters ... -
The Application of Acoustic Emission Technique to Monitor the Early Setting Process of Cement Pastes
(EDP Sciences, 2019-12-12)The obtained physico-mechanical properties (mainly flexural and compressive strength) of cement-based composite materials depend on various factors (type of mixture, its composition, standard hardening process, proper ... -
Experimental and numerical analysis of the fracture response of alkali-activated slag-based materials
(EDP Sciences, 2020-10-05)The paper deals with the experimental and numerical determination of mechanical fracture parameters of fine-grained composites based on the alkali-activated slag (AAS) at different ages of hardening. Two AAS composites, ... -
Complex multilevel fracture tests of concrete: basic mechanical fracture parameters of standard size specimens.
(EDP Sciences, 2020-10-05)The aim of the current research is to develop a complex multilevel approach for experimental–computational determination of mechanical fracture parameters of concrete as a typical quasi-brittle material. This includes ... -
Influence of an Acidic Environment on a Glass Fibre Reinforced Polymer Grid
(EDP Sciences, 2020-03-05)The article deals with the influence of an acidic environment on the mechanical properties of a Glass Fibre Reinforced Polymer (GFRP) grid. The influence of an acidic environment is examined on samples cut from a GFRP grid. ... -
Effects of elevated temperature on the behaviour of concrete beams reinforced with fiber reinforced polymers
(IOP Publishing, 2021-01-18)Fiber reinforced polymer (FRP) rebars have increasing popularity in the construction industry all around the world although steel rebars are widely used for reinforcing of the concrete so far. FRP bars, which have higher ... -
Mechanical Fracture and Fatigue Characteristics of Fine-Grained Composite Based on Sodium Hydroxide-Activated Slag Cured under High Relative Humidity
(MDPI, 2021-01-08)A typical example of an alternative binder to commonly used Portland cement is alkali-activated binders that have high potential as a part of a toolkit for sustainable construction materials. One group of these materials ... -
NDT Methods Suitable for Evaluation the Condition of Military Fortification Construction in the Field
(MDPI, 2020-11-18)The protective structure is designed to protect the live force against the impact of a shock wave and projectiles, it cannot be diagnosed by the destructive method which devalues the protective structure by sampling. The ... -
Testing the Influence of the Material Bonding System on the Bond Strength of Large-Format Tiles Installed on Concrete Substrate under Mechanical Loading
(MDPI, 2020-07-17)The paper describes an experiment focusing on the way the material system influences the bond strength of large-format tiles installed on concrete substrate during mechanical loading under conditions that correspond to ... -
Experimental Analysis on Shrinkage and Swelling in Ordinary Concrete
(Hindawi Publishing Corporation, 2017-05-22)The paper deals with the experimental determination of shrinkage development during concrete ageing. Three concrete mixtures were made. They differed in the amount of cement in the fresh mixture, 300, 350, and 400kg/m3. ... -
Freeze-thaw resistance of concrete with porous aggregate
(Elsevier Ltd., 2010-06-06)This paper deals with the influence of periodic freezing on lightweight concrete characteristics. Sets of lightweight concrete prismatic specimens are cyclically frozen in range from +20C to -20C and non-destructively ...
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