NEW STATEMENT OF CONCRETE STUDIES OPTIMIZATION PROBLEMS
Journal Title: Збірник наукових праць Українського державного університету залізничного транспорту - Year 2017, Vol 168, Issue 2
Abstract
Civil engineering people differentiate between «process» and «design» approaches to problem solution. In the former case process engineers assign composition and process parameters without due consideration of material working terms in structure, whereas in the latter case designers calculate articles issuing from material normalized characteristics, without due consideration of its composition and manufacturing peculiarities of articles. Such an approach to solution of civil engineering problems may be called differentiated. On the contrary, integrated approach presupposes determination of composition and process parameters issuing from the integrity of requirements not only to material properties with due consideration of article manufacturing process, but to the properties of structure to making of which the material is intended. We formulated the problem of concrete mix formulating optimization issuing from a complex of requirements to concrete mix properties, article manufacturing process, as well as of consumption proportioning of concrete mix components, structure dimensions and its reinforcement. It is emphasized that the integrated approach meets the moist efficient solution of the backbone problem of building materials science – obtaining building materials and articles with prescribed set of properties under optimal expense of feed materials and utilities.
Authors and Affiliations
Valery Kondrashchenko, Еlena Kondrashchenko, WANG Chuang, Anna Yerokhina
TECHNICAL SPECIFICATIONS ON INTEROPERABILITY AND THEIR INTRODUCTION IN A SPEED MOTION ON RAILWAYS OF UKRAINE
It is proved that cooperation in questions of interoperability with the EU countries has a certain interest for the railways of Ukraine, taking into account the possible financing from the EU funds. However, we should no...
RESEARCH OF GROUNDED SCREEN FROM CONDUCTIVE COMPOSITIONSAS A STRUCTURES ELECTRO-CORROSION PROTECT
The use of grounded screens — coatings from compositions with graphite filler based on Portland cement and on the basis of sodium silicate as a means of protecting structures from electrocorrosion by leakage currents was...
SIDEBAND EXTRACTION ON THE VIBRATION POWER SPECTRA FOR THE TRACTION GEARBOXES OF ELECTRIC TRAINS
The paper deals with the time-synchronous averaging technique of vibration signals for extraction of the features of the technical state of electric train traction gearboxes. Simulation of the vibration of the faultless...
CALCULATION OF COMPRESSED AND BENDED STEEL REINFORCED CONCRETE CONSTRUCTIONS IN THE RETAINED FORMWORK
The problems of calculation of compressed and bended steel reinforced concrete structures in the retained formwork were considered. Apart it’s necessary to consider the questions which are related with calculation tube...
EFFECT OF PHOSPHOGYPSUS TO THE SLAG BINDER ACTIVITY
The ecological problem of utilization of metallurgical slags is shown. As a result of the analytical review of literature sources, there are varieties and tonnage of slags in Ukraine, their chemical composition, data on...