Abstract:The article presents a classification of sports floors based on the type of deformations to which they are subjected and gives several examples of possible methods of their manufacture and installation. Three variants of sports flooring have been suggested for a selected sports venue and, subsequently, a multi-criteria comparative analysis has been carried out for the variants taking into account the following criteria: cost, installation time, suitability for various sports disciplines and other extra-sport purposes as well as the floor thickness.
Abstract:This paper presents selected variants of thermal insulation for external walls of single family homes. The main aim of this article is to analyze the technological and economical solutions based on the BIM model. The technical and economic analysis concerns the calculation and evaluation of both the costs of constructing the walls and the energy demand of the model building designed by the authors. The last part of the paper compares and prioritises proposed solutions in regard to the accepted assessment criteria using the AHP method, which allows for selecting the best solution.
Abstract:This article presents an analysis of how the construction and insulation materials used for the walls of a sports hall built according to passive design affect the overall construction costs. The authors also attempt to answer whether the objective of achieving the lowest possible energy consumption in a building is actually economically sound. Cost analyses will be carried out to this end, the optimum insulation thickness will be determined, and the time necessary to balance the investment expenditure will be calculated for an energy-efficient construction project.
Abstract:The article presents the problem of planning works based on the BIM model of a building. The authors briefly discuss the possibility of using BIM as a tool for planning works, and then present the case study. In the case study method in a synthetic manner the planning process presents works based on a model residential building construction. The advantages and opportunities as well as the problems of using BIM as a basis for the planning process of construction works are discussed and commented in the conclusions.
Abstract:In the paper the results of experimental research on the deterioration of drinking water quality after cement mortar lining were presented. The experiments were conducted in the renovated water pipeline section in Cracow. Based on the results, the expected degree of leaching of the pollutants from cement mortar to drinking water for specified lengths and diameters of renovated pipes, as well as water velocities, was estimated.
Abstract:The laboratory studies of pesticides involves a number of ways and methods. It has become especially important nowadays when pesticides is common for people to use. The increasing risk of these chemicals has forced the Legislating Authorities in France to set up recommendations on the use of pesticides and established Ecophyto 2018 program. This paper and research are the part of an interdisciplinary project funded by CPER (Contract between the State and Region), FEDER and the Région Auvergne. The objective of this research is to characterize the fate of 3 herbicides (tembotrion, S-metolachlor, nicosulfuron) belonging to different chemical families on soil from Limagne region in France. The author have performed the experiments with the dry samples of soil which were polluted in the laboratory by spraying pesticide solutions. The work focused on one of the main processes governing the adsorption on surface of solid phase. The results of the research shown that the impact of pesticides is greatly dependent on their family origin as well as on the environmental conditions and the type of soil. Further studies have to be carried out to better understand actions and behaviour of the pesticides in the soil.
Wassilkowska, Anna, Kuc, Karolina, Zielina, Michał
Type: Article
Release date:
2015
Abstract:Cementation of iron water and sewage pipes is a standard procedure that is used to ensure internal protection against corrosion. In order to reduce leaching of chemical elements from coating to water, the neutral impact of cement coating on the water is of major importance. In the present study, the elemental composition of the cement mortar lining, taken from the new cast iron pipes with a diameter of 100 and 150 mm, has been investigated. A reference sample was made from Portland cement. Studies using scanning electron microscopy revealed an increased contents of titanium in the sewage pipes coating and also aluminum and alkali in water pipe coatings.
Plaskacz-Dziuba, Marta, Cichosz, Marcin, Igliński, Bartłomiej, Buczkowski, Roman
Type: Article
Release date:
2015
Abstract:The article presents the results of research on autoclaved aerated concrete (AAC) produced according to the manufacturer recipe and modified AAC with the addition of waste from the semi-dry flue gas desulfurization installation. Produced cubes of concrete were analysed using thermogravimetry in a temperature regime of 0–1200°C in order to determine thermal stability. Samples were also tested using X-ray diffractometer to determine the differences in the content of tobermorite 1.1 nm, the compound which is responsible for the mechanical properties of tested concrete.
Abstract:The article presents the problem of ichthyofauna protection in aquatic ecosystems. One of the possible solutions to protect the fish and fry in the water intakes is the use of properly designed water intake screens. The article presents the results of numerical calculations performed in Autodesk Simulation CFD software considering the performance of water intake screen under various conditions.
Abstract:The rising interest in the ecological and energy-saving constructions include the whole life cycle of building – starting from materials and ending with remains that a building leaves in the environment. The holistic view of the ecological construction leads to increase in the interest in constructions made from straw. This article focuses on the technology using straw bales in modern buildings. To a great extent the straw bale method fulfils modern, ecological trends because of low production costs, low energy use during production and biodegradation, among others. The article describes physical parameters specific for straw bale and gives examples of current projects of modern buildings made with this technology.
