Lenka Scheinherrová
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View article: Potential of water sediments in construction materials: Current approaches and critical consideration of future challenges
Potential of water sediments in construction materials: Current approaches and critical consideration of future challenges Open
Human activities result in sediment accumulation, so the reservoirs gradually lose their functionality, impacting their ability to manage large flood inflows, supply water, and generate hydroelectric power. Therefore, periodic removal of s…
View article: Lime-based historic plasters characterization: mineralogical composition and binder to aggregate ratio
Lime-based historic plasters characterization: mineralogical composition and binder to aggregate ratio Open
Preserving historic buildings requires renovation using compatible plasters that closely resemble the original ones. However, achieving this likeness requires a thorough characterization of the original plaster. This article explores the c…
View article: Controlling the fineness of synthesized tricalcium aluminate for cement addition
Controlling the fineness of synthesized tricalcium aluminate for cement addition Open
This paper presents a study on the laboratory synthesis of tricalcium aluminate (C 3 A) at temperatures ranging from 1300 to 1450 °C. The resulting C 3 A product exhibited variations in morphology, mineral composition, and hardness dependi…
View article: New insight into the phase changes of gypsum
New insight into the phase changes of gypsum Open
The phase changes of gypsum were considered to be sufficiently understood for a long time. However, due to the increasing importance of gypsum recalcination (connected with the planned closure of thermal power plants resulting in a lack of…
View article: Durability of Ternary Blended Concrete Incorporating Rice Husk Ash and Calcined Clay
Durability of Ternary Blended Concrete Incorporating Rice Husk Ash and Calcined Clay Open
Research on the combined substitution of supplementary cementitious materials (SCMs) has already demonstrated that it might be one of the few viable options to produce low-carbon concrete at scale. This paper presents an experimental inves…
View article: Potential of Water Sediments in Construction Materials: Current Approaches and Critical Consideration of Future Challenges
Potential of Water Sediments in Construction Materials: Current Approaches and Critical Consideration of Future Challenges Open
View article: Effect of water removal techniques on the composition of gypsum-based composites
Effect of water removal techniques on the composition of gypsum-based composites Open
Green building materials have received increasing attention in recent years since they represent promising solutions on the path to achieving carbon neutrality in the civil engineering sector. One of the possibilities to decrease CO2 emiss…
View article: Aloe Vera-Based Concrete Superplasticizer for Enhanced Consolidation with Limestone Calcined Clay Cement
Aloe Vera-Based Concrete Superplasticizer for Enhanced Consolidation with Limestone Calcined Clay Cement Open
Self-consolidating concrete (SCC) is renowned for its outstanding workability and ability to seamlessly flow into intricate structures with minimal vibrations, achieved through the incorporation of chemical admixtures. This study pioneers …
View article: Effects of Aloe Vera Mucilage as a Superplasticizer on Limestone Calcined Clay Self-Consolidating Concrete Performance
Effects of Aloe Vera Mucilage as a Superplasticizer on Limestone Calcined Clay Self-Consolidating Concrete Performance Open
Self-consolidating concrete (SCC) is highly workable concrete that flows under minimal vibrations into congested reinforcement and sophisticated formworks. The properties of SCC are achieved by incorporating chemical admixtures. In this st…
View article: Laboratory synthesis of C<sub>3</sub>A on the kilogram scale: Preliminary results
Laboratory synthesis of C<sub>3</sub>A on the kilogram scale: Preliminary results Open
This paper focuses on tricalcium aluminate (C 3 A) synthesis on the kilogram scale in laboratory conditions. The proposed design aims to produce more than 97 wt% of C 3 A. The remaining three wt% could be associated with residual lime, CaO…
View article: Effects of Alternate Wet and Dry Conditions on the Mechanical and Physical Performance of Limestone Calcined Clay Cement Mortars Immersed in Sodium Sulfate Media
Effects of Alternate Wet and Dry Conditions on the Mechanical and Physical Performance of Limestone Calcined Clay Cement Mortars Immersed in Sodium Sulfate Media Open
Sulfate attack in concrete structures significantly reduces their durability. This article reports the experimental findings on the effects of sodium sulfate on limestone calcined clay cement (LC3) in an alternate wet and dry media. The sa…
View article: Contribution of TiO2 and ZnO nanoparticles to the hydration of Portland cement and photocatalytic properties of High Performance Concrete
Contribution of TiO2 and ZnO nanoparticles to the hydration of Portland cement and photocatalytic properties of High Performance Concrete Open
View article: Comparison of structure and properties of gypsum mortars with different types of aggregates
Comparison of structure and properties of gypsum mortars with different types of aggregates Open
Gypsum is one of the most environmentally friendly building materials and therefore its importance increases nowadays. Since the gypsum is mostly used in the form of the paste, the influence of aggregates on properties of gypsum mortars is…
View article: Study of gypsum composites with fine solid aggregates at elevated temperatures
Study of gypsum composites with fine solid aggregates at elevated temperatures Open
The structure and behaviour of two gypsum composites after exposition to elevated temperatures were investigated. The silica sand and fine basalt aggregate were used as solid fillers. The changes in structure and composition at temperature…
View article: Experimental and Computational Study of Thermal Processes in Red Clays Exposed to High Temperatures
Experimental and Computational Study of Thermal Processes in Red Clays Exposed to High Temperatures Open
Fired bricks represent one of the most popular building materials, of which production is still growing. Since the functional properties of bricks have reached their physical limits, the current development aims at an optimization of produ…
View article: Influence of fillers on structure and behaviour of gypsum mortars
Influence of fillers on structure and behaviour of gypsum mortars Open
Gypsum mortars with different types of lightweight fillers were studied. The importance of gypsum as one of the most environmentally friendly building binder increases nowadays and new ways of its utilization are searched. Using of fillers…
View article: Basic physical and mechanical properties of cement composites after temperature exposure
Basic physical and mechanical properties of cement composites after temperature exposure Open
Basic physical and mechanical properties of several cement composites are determined as functions of thermal load and the results are compared with reference materials. Bulk density, matrix density, and open porosity are measured using the…
View article: Enhancement of sorption capacity to Sr and Cs of a cement composite by addition of brick powder
Enhancement of sorption capacity to Sr and Cs of a cement composite by addition of brick powder Open
Concrete is a suitable material for secondary casings in multi-barrier systems used in radioactive waste repositories, because it is durable and radiation- and thermal resistant and it has good mechanical properties. The casings should als…
View article: Mechanical properties of concrete for radioactive waste repositories
Mechanical properties of concrete for radioactive waste repositories Open
Concrete casing for radioactive repositories have to meet many strict requirements. One of the most important is a radiation protection and a radionuclide inhabitation. Bentonite, with a great sorption capacity, seems to be a suitable mate…
View article: Hydration of Ordinary Portland Cement in Presence of Lead Sorbed on Ceramic Sorbent
Hydration of Ordinary Portland Cement in Presence of Lead Sorbed on Ceramic Sorbent Open
Lead, a highly toxic element, is frequently present in various solid wastes as well as in industrial effluents. Sorption with a low cost sorbent is a simple way of Pb removal from liquid streams, but stabilization of spent sorbent has to b…
View article: Mechanical and thermal properties of concrete suitable for radioactive waste disposal sites
Mechanical and thermal properties of concrete suitable for radioactive waste disposal sites Open
Secondary casing as a part of a multi-barrier system serves to meet the safety requirements on the radioactive waste repositories. Such casing needs to be durable, radiation- and thermal resistant, with good mechanical properties; these re…
View article: Thermal Stability of Lightweight Concrete with Incorporated Regranulated Polypropylene Aggregate
Thermal Stability of Lightweight Concrete with Incorporated Regranulated Polypropylene Aggregate Open
Plastic waste and its low recycling rate make a significant contribution towards the pollution of the environment. Therefore, it is essential that plastic waste is utilised in different applications, such as aggregates in concrete. Since t…
View article: Heat transfer in hybrid fibre reinforced concrete-steel composite column exposed to a gas-fired radiant heater
Heat transfer in hybrid fibre reinforced concrete-steel composite column exposed to a gas-fired radiant heater Open
In the paper, a gas-fired radiant heater system for testing of structural elements and materials at elevated temperatures is described. The applicability of the system is illustrated on an example of the heat transfer experiment on a hybri…
View article: Thermal Properties of Cement Based Composites with Municipal Solid Waste Incinerator Fly Ash Accessed by Two Different Transient Methods
Thermal Properties of Cement Based Composites with Municipal Solid Waste Incinerator Fly Ash Accessed by Two Different Transient Methods Open
Thermal properties of cement composite with Mixed Fly Ash (MFA) from different parts of Municipal Solid Waste Incineration (MSWI) process...
View article: Thermal Properties of High-Performance Concrete Containing Fine-Ground Ceramics as a Partial Cement Replacement
Thermal Properties of High-Performance Concrete Containing Fine-Ground Ceramics as a Partial Cement Replacement Open
Some types of industrial waste can be used in concrete as a partial replacement of a cement binder. One such material is fine-ground ceramics, which is a waste produced during brick cutting. The ground ceramic can be used as a pozzolana ac…