Information Page of SAS Organisation

Institute of Construction and Architecture

International projects

PMS - Programa en Estudios Metropolitanos (Metropolitan Studies Programme)
Program metropolitných štúdií
Program: Iné
Project leader: Mgr. Kocifaj Miroslav PhD.
Annotation:Participants: The National Council of Science and Technology and different public research institutes of México: CENTROMET, MORA, CIDESI, INFOTEC, CENTROGEO, COLEF, and CIDE.
Duration: 1.9.2014 -

SkyMeAPP - SkyMeAPP
SkyMe APP
Program: UNESCO
Project leader: Mgr. Kocifaj Miroslav PhD.
Annotation:SkyMeAPP is a citizen science project developed by an international scientific committee and supported by UNESCO and Museo de la Luz, and it is a part of the initiatives to celebrate the proclamation of the International Day of Light 2018. SkyMe APP is an interdisciplinary project that will help to have valuable data to study light pollution and all its consequences. SkyMe is a mobile application that allows the general public to support scientific research on light pollution while generating an approach to this environmental problem and encouraging interest in the various efforts that have been made to date to control this type of pollution worldwide.
Project web page:http://www.skymeapp.com/
Duration: 8.11.2017 -

V4-KOREA_RADCON - The Effect of Chemical Composition of Concrete on Its Long-term Performance in Irradiated Environment
Vplyv chemického zloženia betónu na jeho dlhodobú trvanlivosť v (ionizujúcom) ionizovanom prostredí
Program: Multilaterálne - iné
Project leader: Prof.Dr.Ing. Palou Martin-Tchingnabé
Duration: 1.10.2017 - 30.9.2020


National projects

SCC material and - Material and mechanical performance of heavyweight self compacting concrete (SCC)
Materiálové zloženie a mechanické vlastnosti ťažkého a samozhutňujúceho sa betónu
Program: APVV
Project leader: Prof.Dr.Ing. Palou Martin-Tchingnabé
Annotation:Establishment of network of experts from Slovakia and Korea in Civil and Material Engineering to submit the bilateral research within the present call. The main item is about self compacting concrete (SCC) and heavyweight concrete (HWC). The present project has a challenge to develop heavyweight concrete without segregation and with characteristics of Self Compacting Concrete. Slovakia takes the material performance of baryte aggregate concrete. Korea takes the fracture behavior of baryte aggregate concrete and. Both principal investigators from Korea and Slovakia will successfully conduct this bilateral research. We expects this international research will bring some of significant research output to the society in the field of civil construction.
Duration: 1.9.2018 - 31.12.2019

Flexoelectricity - A multiscale flexoelectric theory and a new method for real-time detection of microcracks in dielectric materials
Multiškalova teória flexoelektricity a nové metódy pre detekciu mikrotrhlín v reálnom čase v dielektrických materiáloch
Program: APVV
Project leader: Prof. Ing. Sládek Ján DrSc.
Annotation:Scientific base of the structural health monitoring (SHM) systems should be developed to prevent catastrophic failure of structures, decrease maintenance cost and guide construction. The SHM is especially important for high performance structures, where failure would lead to disasters. It requires a real-time monitoring of micro-cracks in structures. Usually piezoelectric materials are utilized in SHM as sensors. Conventional piezoelectric materials contain toxic lead and they have lower thermal stability. Therefore, the goal of the project is to design lead-free piezoelectric metamaterials with a functionality and piezoelectric response comparable to those of lead-oxide based piezoelectrics. While the piezoelectric property is non-zero only for select materials (noncentrosymmetric),the flexoelectricity is in principle non-zero for all materials. Flexoelectricity is a phenomenon widely existing in all dielectric materials. It couples the strain gradient developed in a dielectric material with its polarization. To utilize the flexoelectric effect the strain gradients have to be large and they are generated easily only at the nanoscale. A reliable computational method based on gradient theory has to be developed. Both material parameters higher order elastic and flexoelectric coefficients are determined on the base of atomistic model. The governing equations with the corresponding boundary conditions are derived from the variational principle. The FEM formulation is developed from the governing equations of gradient theory. The C1-continuous elements are applied to guarantee the continuity of variables and their derivatives in the element boundaries. Experimental methods are applied to verify new theoretical and computational approaches in flexoelectricity.
Duration: 1.10.2018 - 30.9.2021

Effectiveness of bended light guides under arbitrary sky conditions including broken cloud arrays
Optické vlastnosti zalomených svetlovodov za podmienok nehomogénnej oblačnosti s ľubovoľným pokrytím oblohy
Program: VEGA
Project leader: Mgr. Kocifaj Miroslav PhD.
Annotation:A curved surface as well as bends of hollow light guides both cause the light field is transformed in a complex way between a light exit surface and light entrance surface. Most of light-guide models fail in reproducing illuminance patterns under varying atmospheric conditions including cloud fields formed into non-static arrays. The effect of broken clouds on light field bellow the light guide will be the first time treated in its complexity in this project. We will qualify and quantify the effect of bends and their positions on the light-pipe effectiveness, while the theoretical and numerical results will be applied in predictions of illuminance distribution at a workplane. The targeted optical experiments in a local atmosphere are aimed i) to prove the solution concept as well as ii) to identify the effects of different cloud types on light guide optical properties. This should improve the accuracy of optical modeling in different localities accepting prevailing types of clouds and turbidity conditions.
Duration: 1.1.2016 - 31.12.2019

Study of hydration process and microstructure development in multi-component cementitious binders
Štúdium procesov hydratácie a vývoja mikroštruktúry v mnohozložkových cementových spojivách
Program: VEGA
Project leader: Prof.Dr.Ing. Palou Martin-Tchingnabé
Annotation:The present project deals with the development of advanced inorganic binders based on the multi-component cements containing supplementary cementitious materials (blast furnace slag, metakaolin and silica fume). An efficient use of the multi-component cements in high-performance concretes under normal and hydrothermal conditions (geothermal and oil depth wells) of application will be explored through the project. Materials will be preferentially prepared from the domestic raw materials resources. The project will focus on the study of chemistry, kinetics and mechanism of hydration in proposed systems. The interaction among particular supplementary cementitious materials, their activation process and the impact of synergetic effect upon the performance of final materials will be also investigated. In order to optimize the composition of systems the best, mechanical and physical properties will be determined as for the referential cement, corresponding binary and ternary mixtures as for the target four compounds systems.
Duration: 1.1.2017 - 31.12.2020

Coupled problems of thermal and electromechanical fields in advanced materials with porous microstructure
Viazané úlohy tepelných a elektromechanických polí v piezoelektrických materiáloch s poréznou mikroštruktúrou
Program: VEGA
Project leader: Prof. RNDr. Sládek Vladimír DrSc.
Annotation:Main goal of this project is to analyze coupling phenomena of thermal, electric and mechanical fields in porous piezoelectric media. Various coupling effects are possible between the physical fields leading to possible new applications. Characterization of these effects will be performed via computer simulations. Two material models for piezoelectric media will be considered – dielectric piezoelectric model and semiconductor piezoelectric model. Effect of porosity on thermal, electric and mechanical response will also be investigated. Besides the well-developed numerical methods a novel formulation of scaled boundary finite element method (SBFEM) will be considered for the numerical analyses. Advantages of this method can be effectively utilized to predict the behaviour of porous piezoelectric media in multilayer or 3D axisymmetric problems. Research results may be useful for the optimal design of advanced piezoelectric sensors and devices to enhance their measurement capabilities or structural integrity.
Duration: 1.1.2016 - 31.12.2019

V4-KOREA_RADCON - The Effect of Chemical Composition of Concrete on Its Long-term Performance in Irradiated Environment
Vplyv chemického zloženia betónu na jeho dlhodobú trvanlivosť v (ionizujúcom) ionizovanom prostredí
Program: Iné projekty
Project leader: Prof.Dr.Ing. Palou Martin-Tchingnabé
Annotation:Chemical composition of concrete constituents is one of the key factors that heavily influences ageing features/properties, thus structural integrity (durability and service-ability) of concrete structures. The current topics of today, which affect directly economies of many countries, are the service life extension of operating nuclear power plants (NPPs), and the selection of building materials for construction of new NPP units. In NPPs, the concrete is exposed to strong neutron and gamma-ray radiation around the energy-generating core, and therefore, the selection of its constituents with respect to their chemical composition needs to reflect the activation limits and other ageing related aspects. The main objective of this project is to assess the effect of radiation-induced mechanical and volumetric changes on structural integrity of concrete structures in irradiated environment. A set of commonly used and newly proposed minerals for concrete aggregate as well as multicomponent cement will be assembled. The most prominent minerals present in concrete will be irradiated and the effect of mechanical and chemical changes on load carrying capacity/performance of the minerals will be investigated. The database comprising the irradiated minerals will be substantially expanded with experiments on non-irradiated minerals under various temperature and humidity regimes. Based on the experimental data, numerical models describing mechanical behavior of the minerals will be used in future structural analyses. The main result of this project is a proposed assessment method which interconnects mechanical and chemical changes of irradiated minerals with long-term performance of concrete structures exposed to radiation.
Duration: 1.10.2017 - 30.9.2020

Research on High Performance cementitious Composites under hydrothermal conditions for potential application in deep borewells
Výskum vysokohodnotných cementových kompozitov za hydrotermálnych podmienok pre potenciálne využitie v hĺbkových vrtoch
Program: APVV
Project leader: Prof.Dr.Ing. Palou Martin-Tchingnabé
Annotation:The High Performance cementitious composites (HPCC) based on nontraditional binders are perspective for application in severe conditions of chemical, physical and mechanical hydrothermal load of geothermal, oil or gas wells. The development of such materials requires a systematic numerical simulation of bore wells taking into consideration temperatures, vapor pressure and deep of wells. The results of numerical simulation will be used to model the hydrothermal parameters of laboratory autoclave in order to set the suitable material compositions for the development of High Performance cementitious composites (HPCC). The project has three essential features: 1. The numerical simulation of conditions in deep geothermal and oil wells for research and development of High Performance Cementitious Composites (HPCC) with exceptional chemical, physical and mechanical properties. Development of different variants of finite-element models of deep borehole structures and the specific programs to process the inputs and outputs of numerical simulations. 2. Study of the chemical and physical processes leading to the formation of chemical bonds of the Non-traditional binders under hydrothermal conditions, including the evaluation of the pore structure, microstructure development and properties of High performance cementitious composites. 3. The use of laboratory autoclave under special conditions for synthesis of geopolymer zeolite and hydroceramics, such as hydroxyapatite for various applications in the power plant, chemical industry, the environment, agriculture, biomedicine, etc...
Project web page:http://147.213.102.5/
Duration: 1.7.2016 - 31.12.2020

Projects total: 10