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1

Problematyka wyznaczania parametrów wytrzymałościowych materiałów stabilizowanych spoiwem hydraulicznym in situ

Ciołczyk Adrian

Magazyn Autostrady

|

2023

|

Nr 4

46--50

PL

W niniejszym artykule przedstawiono zagadnienia dotyczące wykonywania badań wytrzymałości na ściskanie oraz mrozoodporności warstw związanych spoiwami hydraulicznymi, w związku z tym ograniczono się do opisania zagadnienia warstw związanych cementem. W praktyce zdarzają się sytuacje wykorzystywania innych spoiw hydraulicznych (najczęściej drogowych) odnoszących się do norm opisujących spoiwa cementowe. W pierwszej części artykułu omówiono dokumenty, według których można projektować i wykonywać warstwy konstrukcyjne związane spoiwami, a także normy, które istnieją, ale nie można ich stosować (z różnych przyczyn).

EN

This article presents the issues of testing the compressive strength and frost resistance of layers bound with hydraulic binders, therefore it is limited to describing the issue of layers bound with cement. In practice, there are situations of using other hydraulic binders (usually road ones) referring to the standards describing cement binders. The fi rst part of the paper discusses documents according to which it is possible to design and complete structural layers bound with binders, as well as standards which exist but cannot be applied (for various reasons).

2

Prognozowanie izolacyjności akustycznej

Gil Jarosław

Izolacje

|

2020

|

R. 25, nr 2

82--84

PL

Autor analizuje materiałową izolacyjność akustyczną ścian z cegieł o różnej grubości w skali częstotliwości z wykorzystaniem modelu obliczeniowego w programie Insul, a następnie prezentuje wyniki uzyskane w sytuacji rzeczywistej in situ. Rozważania dotyczą sytuacji przewidzianych w przepisach określonych polskimi i międzynarodowymi normami.

EN

The Author analyses the material acoustic insulation of brick walls of different thicknesses in the frequency range using a calculation model including the Insul program, and then presents the results obtained in situ. The discussion concerns the situations provided for in the regulations defined by Polish and International standards.

3

Contribution to the study of soil stabilized by ballast columns

Bencheikh Boutahir Born Messaouda, Aidoud Assia, Benamara Fatima Zohra

Civil and Environmental Engineering Reports

|

2020

|

Vol. 30, no. 3

234--252

EN

Ballasted columns are an interesting technique for improving compressible soils in situ. Their major advantages are to reduce compaction, increase the bearing capacity of soils, accelerate consolidation, and eliminate the risks of liquefaction during earthquakes. Thanks to these advantages, reinforcement processes are considerably developed in the field of geotechnical construction and this is on an international scale. Numerical modelling is a necessary and effective alternative for approaching the real behavior of soils reinforced by ballasted columns. The present work aims to change several parameters, being, among others, the number of columns, the rise of the water table, and the friction angle. With this in mind, a parametric study was carried out in order to determine the influence of certain parameters on the settlement results and observe their influence on the mechanical behavior of the soil using the Plaxis 2D calculation code. This study found that the correct choice was based on the number of columns, which is three, while the increase in groundwater level does not have a significant influence on the results.

4

Local composite reinforcements of TiC/FeMn type obtained in situ in steel castings

Olejnik E., Szymanski L., Tokarski T., Opitek B., Kurtyka P.

Archives of Civil and Mechanical Engineering

|

2019

|

Vol. 19, no. 4

997--1005

PL

This dissertation concerns the method of obtaining the in situ local composite reinforce- ments (LCR – Locally Composite Reinforcement) of the TiC–FeMn type in steel castings. The reinforcing phase – titanium carbide (TiC) was obtained by placing the pressed substrates of the synthesis of TiC in the form of compacts into a mold cavity. The basic problem connected with fabricating TiC local composite reinforcements is the phenomenon of fragmentation. In order to reduce this phenomenon, a moderator composed of Hadfield steel at 70 and 90% by weight was introduced to the initial mixture of the TiC substrate powder. As a result, homogenous and dimensionally stable composite reinforcements of the austenite matrix were obtained and examined by analyzing their macrostructure, microstructure, structure, hardness, and wear resistance. An investigation of the phase analysis and microstructure confirmed the presence of the TiC phase in the structure of the composite zones. The hardness of the composite reinforcement ranged from 550 HV to 800 HV30 depending on the proportion between the percentage of the moderator and the content of the pure substrates of the synthesis reaction of the TiC.

5

In situ investigations of microstructural changes during tensile deformation of AISI 304L stainless steels

Singh Navjot, Nanda Tarun, Kumar B. Ravi, Das Swapan Kumar, Singh Vishal

Archives of Civil and Mechanical Engineering

|

2019

|

Vol. 19, no. 3

672--679

EN

The present work investigates the microstructural changes in an AISI 304L austenitic stainless steel during the early stages of tensile deformation (where austenite does not transform to strain induced martensite). In situ tensile experiments were conducted to record grain orientation changes and slip activation in the steel. The effect of grain size, neighboring grains, and annealing twins on orientation changes during deformation was investigated. Results showed that at a given strain level, grains lying in relatively softer regions and possessing higher Schmid factor values accommodated the plastic deformation initially and showed orientation changes toward the stable orientation. The relatively larger grains changed their orientations only at higher strain levels. Grain orientation changes were also influenced by size and crystallographic orientation of neighboring grains. For grains containing annealing twins, the orientation changes of twin and its grain were in different directions during deformation at a given strain level. Further, grains containing multiple twins showed delayed deformation. The study of tensile deformation behavior in this respect opens up new routes to alter and hence enhance the mechanical properties of materials by engineering their microstructure.

6

An investigation into fabrication and characterization of direct reaction synthesized Al-7079-TiC in situ metal matrix composites

Sujith S. V., Mahapatra Manas Mohan, Mulik Rahul S.

Archives of Civil and Mechanical Engineering

|

2019

|

Vol. 19, no. 1

63--78

EN

The present study was attempted to highlight a novel direct reaction synthesis in which traditional casting plus rapid solidification techniques were implemented to produce Al-7079-TiC in situ composites with homogenous microstructure and improved dispersion strengthening by the reinforcing phases. Casted samples were effectively characterized by scanning electron microscopy followed by energy dispersive spectroscopy and X-ray diffraction. Ingot metallurgy showed a homogenous distribution of TiC particles inside the grain. This particle behavior acted as an excellent nucleation sites for the Al dendrites to grow unvaryingly. TiC reinforcements have semi coherent relationship with α-Al matrix. It was observed that eutectic boundary includes the second phases based on η (MgZn2) and Mg(Zn, Cu, Al)2. Almost 90% of the in situ reinforced TiC were homogenously distributed along the center of the grain. Thermal history conditions have shown an exothermic behavior during casting. Experimental results revealed the evolution of TiC particles in super-heated melt region, i.e. dissolution of titanium continued by reaction of titanium with diffused carbon in the Al matrix to form TiC particles. Further they acted as nucleation sites for the α-Al dendrites to grow homogenously. This study presents optimum process temperature for the Al-TiC in situ synthesis.

7

Strefy kompozytowe otrzymywane in situ w staliwnych odlewach bijaków do kruszarek

Opitek B., Olejnik E., Lelito J.

Prace Instytutu Odlewnictwa

|

2018

|

Vol. 58, no. 3

191--199

PL

Prezentowana praca miała na celu uzyskanie elementu bijaka do kruszarki wykorzystywanego w warunkach dużego zużycia ściernego oraz pracującego pod wysokimi naciskami. Wytworzono, metodą SHSB, lokalną strefę kompozytową składającą się z bardzo twardego węglika tytanu – TiC. Umieszczone w przygotowanej wcześniej formie odlewniczej wypraski zostały zalane ciekłym metalem, którego ciepło spowodowało zainicjowanie reakcji in situ tworzenia się węglika tytanu. Otrzymany w ten sposób odlew poddano badaniom. Wykonano analizę składu fazowego na dyfraktometrze rentgenowskim – XRD. Dodatkowo przeprowadzono badania na elektronowym mikroskopie skaningowym – SEM w celu określenia kształtu, wielkości i rozmieszczenia TiC. W efekcie przeprowadzonych prac i badań otrzymano materiał wysokiej jakości zgodny z oczekiwaniami.

EN

The aim of the presented study was to obtain the element of a crushing mill beater reinforced with a composite zone, working under the conditions of high abrasive wear as well as high pressures. By means of the SHSB method, a local composite zone was created consisting of very hard titanium carbide – TiC. The moulded pieces prepared beforehand in the casting mould were filled with liquid metal, whose heat caused the initiation of an in situ reaction – the formation of titanium carbide. The cast obtained in this way was subjected to tests. An analysis of the physical composition was performed on an X-ray diffractometer – XRD. Additionally, investigations with the use of a scanning electron microscope SEM were carried out in order to determine the shape, size and distribution of TiC. As a result of the conducted research, a high quality material was obtained, which was in line with the authors' expectations.

8

Copper extraction by wet chemical method

Kugeria P. M., Mwangi I., Wachira J., Njoroge P.

Journal of Sustainable Mining

|

2018

|

Vol. 17, iss. 4

202--208

EN

In many countries large deposits of copper with no locally established copper based industries occur because known methods for extraction are prohibitively expensive and unaffordable. This study reports on an affordable and sustainable method for the extraction of copper. This was achieved through the use of a wet chemical method which makes use of hydrazones prepared in situ from chicken dung leached solution. The method involves the reduction of copper (II) ions leached from copper ore to zero valence using chlorine treated solution prepared from chicken droppings at a temperature range of 60-70 °C. The ore samples were pulverized to 250 micro millimetres and leached with hydrochloric acid to obtain leachate containing copper ions. The dissolved copper was reduced to copper metal and obtained by filtration. It was confirmed by XRFS analysis that, the metal purity was found to range between 60 and 80% depending on the ore used. In another experiment, chicken waste solution was used to extract copper from the ore. To the mixture, chlorine gas was then bubbledthrough a glass delivery tube to prepare the hydrazone in situ at a temperature range of 60-70 °C and a pure copper metal was obtained. The findings from this study have shown that there is great potential for the production of copper at low cost and this could be applied in both small-scale cottage industries and large industries using readily available resources such as chicken dung.

9

Przyczyny korozji stali nierdzewnej w obiektach kanalizacyjnych

Lochyński P., Domańska M., Łomotowski J.

Instal

|

2018

|

nr 7/8

46--50

PL

Korozja stali znacznie podnosi koszty eksploatacyjne urządzeń narażonych na kontakt z agresywnym środowiskiem w obiektach kanalizacyjnych. Z tego powodu urządzenia technologiczne wykonuje się z materiałów o podwyższonej odporności na korozję, w tym ze stali nierdzewnych. W artykule przedstawiono najczęściej stosowane typy stali nierdzewnej oraz przyczyny powstawania korozji elektrochemicznej i biologicznej pod wpływem ścieków i powietrza o zwiększonej zawartości siarkowodoru. Przedstawiono oryginalne wyniki badań obrazujące zmiany stali chromowo-niklowej wywołane korozją fizykochemiczną i biochemiczną. W badaniach produktów korozji wykorzystano metody SEM/EDS oraz XRD (X-ray Diffraction), a do identyfikacji mikroorganizmów biorących udział w korozji biologicznej zastosowano metody fluoroscencyjne: DAPI, Live/DEAD i FISH (fluorescence in situ hybridization). Analizy wykazały, że zawartość m.in. siarki, siarczków żelaza oraz niklu w produktach korozji stali wskazuje na obecność silnego oddziaływania gazowego siarkowodoru. Badania potwierdziły obecność bakterii siarkowych z gatunku Acidithiobacillus thiooxidans.

EN

Steel corrosion significantly increases the operating costs of equipment that is exposed to the aggressive environment in sewerage objects. Due to that, technological equipment is produced from materials with improved corrosion resistance, including stainless steel. The paper presents the most commonly used types of stainless steel and the reasons for electrochemical and biological corrosion resulting from exposure to air with increased content of hydrogen sulphide. The authors presented the original test results that illustrate the changes in chromium-nickel steel caused by physical, chemical and biochemical corrosion. The corrosion products were analysed with use of the SEM/EDS and XRD (X-ray Diffraction) methods, while microorganisms participating in biological corrosion were identified with use of the following fluorescence methods: DAPI, Live/DEAD and FISH (fluorescence in situ hybridization). The analyses have demonstrated that the content of sulphur, iron sulphide and nickel in the steel corrosion products proves the existence of a strong influence of gaseous hydrogen sulphide. The tests confirmed the presence of sulphur bacteria Acidithiobacillus thiooxidans.

10

Experimental study temperature evolution of pseudoelastic TiNi alloys during shock-induced phase transformation

Shen L., Liu Y., Shan J.

Archives of Mechanics

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2018

|

Vol. 70, nr 3

191--205

EN

The temperature evolution and the mechanical characteristics of pseudoelasticity TiNi alloys have been studied experimentally at different strain rates. During SHPB testing, the temperature changes were in situ measured by an infrared system recording infrared radiation emitted from the surface of the specimen. It was found that the temperature evolution and the mechanical behavior has a remarkable strain rate effect. With the strain rate increasing, both phase transition subsequent stress and modulus of loading the phase transition stage were higher, exhibiting significant strain and the strain rate hardening characteristic. They were accompanied by the temperature increasing, which suggest that the stress increments result from the temperature change, independently of the strain rate. Calculation analysis results show that latent heat and the dissipated energy in the form of the hysteresis loops, are mainly the sources of the temperature change.

11

Locally Reinforcement TiC-Fe Type Produced in Situ in Castings

Olejnik E., Szymański Ł., Kurtyka P., Tokarski T., Maziarz W, Grabowska B., Czapla P.

Archives of Foundry Engineering

|

2016

|

Vol. 16, iss. 3

77--82

EN

Refinement is one of the most energy consuming technological process, aimed at obtaining mineral raw materials of the proper grain size. Cast structural elements such as jaws or hammers in crushing machines operate under conditions of an intensive wear. The data indicate that 80% of failures of machines and devices is caused by wearing of rubbing surfaces. This problem became the subject of several scientific and industrial investigations carried out in the whole world in order to produce materials ultra- wear resistant. Methods allowing to obtain wear resistant composite castings are discussed in the hereby paper. Within the performed research microstructures of the produced composite zones were presented and the comparative analysis with regard to mechanical and functional properties of local composite reinforcements in relation to the commercial alloys of increased wear resistance was performed. The results show almost twenty five times increase in wear resistance compared to manganese cast steel containing 18% Mn.

12

Proper matrix-reinforcement bonding in cast metal matrix composites as a factor of their good quality

Gawdzińska K., Chybowski L., Przetakiewicz W.

Archives of Civil and Mechanical Engineering

|

2016

|

Vol. 16, no. 3

553--563

EN

The mechanism by which the matrix connects the reinforcement (bonding of the composite structure) affects the quality of metal matrix composites. This article describes and documents the impact of metal matrix on various types of reinforcements of in situ and ex situ composites, by reviewing the relevant literature and making use of various analytic methods: optic microscopy, scanning electron microscopy and X-ray microanalysis. The reinforcement formation in the matrix of in situ composites has been described. The infiltration process of composite reinforcement has been discussed. The three basic composite classes have been presented. The reactivity of selected composite components has been pointed out.

13

Comparison in situ measured vertical displacements in the subsoil of the hydropower plant in Gabčíkovo with numerical results

Hruštinec L., Sumec J., Kuzma J.

Roczniki Inżynierii Budowlanej

|

2014

|

z. 14

45--50

SK

Príspevok podrobnejšie analyzuje veľkosť zvislých deformácií (sadnutia) pre rôzne zaťažovacie stavy, ktoré môžu nastať počas výstavby a prevádzky vodnej elektrárne v Gabčíkove. Na riešenie problému bola použitá MKP. Vypočítané hodnoty sú porovnané so skutočne nameranými hodnotami zvislých deformácií podložia vodnej elektrárne.

14

Wzmacnianie słabonośnych podłoży organicznych przy użyciu metody mieszania gruntu in situ

Topoliński S., Gorączko A.

Logistyka

|

2014

|

nr 6

10678--10683

PL

Artykuł podejmuje tematykęwzmacniania słabonośnych podłoży zbudowanych z gruntów organicznych. Zagospodarowanie terenów, na których do niedawna fundamentowanie było niemożliwe lub nieuzasadnione ekonomiczniestaje się koniecznością. Posadowienie obiektu inżynierskiego na podłożu organicznym wymaga zastosowania specjalistycznych zabiegów wzmacniających.Alternatywną wobec tradycyjnych sposobów posadowienia w takich warunkach stają się metody bezpośredniej modyfikacji właściwości mechanicznych podłoża in situ.Do takich należy miedzy innymi metoda wgłębnego i powierzchniowego mieszania gruntu in situ. Koniecznym etapem stabilizacji są laboratoryjne badania wytrzymałości kompozytu. Pozwalają one ocenić wpływ stosowanych spoiw na poprawę właściwości ulepszanego gruntu organicznego. Jest to niezwykle pomocne przy weryfikacji i projektowaniu właściwego składu kompozytu grunt -spoiwo stosowanego w warunkach in situ.

EN

This paper deals with the problem of weak organic subsoil strengthening. Development of the area, which until recently foundation work was impossible or economically unjustified, becomes a necessity. Foundation engineering facility on organic subsoil requires the use of specialized strengthening treatments. An alternative to traditional methods of foundation under such conditions becomes the method of directly modifying the mechanical properties of the subsoil in situ. These include, interalia, a DeepMixing Method and Shallow Mixing Method. Laboratory strength tests of the composite are a necessary stage of any stabilization. They allow you to assess the impact of binders to improve properties of the strengthened organics oil. It is extremely useful for the verification and designing the correct composition of the soil-binder composite used in situ.

15

Collation of qualitative research with quantitive fem research in terms of two dimensional heat flow

Topolski M., Żurek J., Gintowt J.

Czasopismo Techniczne. Budownictwo

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2014

|

R. 111, z. 5-B

277--282

EN

The paper concerns an attempt to collate qualitative research with quantitative FEM research in terms of two dimensional heat flow. It shows the accuracy of both methods, according to in situ researches with a thermal camera and models – done with software Therm 5, Therm.

PL

Artykuł dotyczy próby zestawienia badań jakościowych z badaniami ilościowymi w zakresie MES dwuwymiarowego przepływu ciepła. Próba korelacji obu metod, według badań in situ przy użyciu kamery termowizyjnej i modeli – wykonane z oprogramowaniem Therm 5, Therm.

16

Kompozyty w technice w aspektach materiałów nowej generacji

Woźniak D., Kukiełka L.

Autobusy : technika, eksploatacja, systemy transportowe

|

2014

|

R. 15, nr 6

292-296

PL

W artykule przedstawiono zarys wiedzy o kompozytach, ich klasyfikacji, niektórych zastosowaniach w technice militarnej i kosmicznej, jak też w wybranych aplikacjach przemysłowych.

EN

This article presents the outline of the information on composites, their classification, basic properties and usage in military and space technology, as well as other industrial applications.

17

Composite zones produced in iron castings by in-situ synthesis of TiC carbides

Olejnik E., Górny M., Tokarski T., Grabowska B., Kmita A., Sikora G.

Archives of Metallurgy and Materials

|

2013

|

Vol. 58, iss. 2

465--471

EN

The study discusses a method of producing composite zones at the edge of castings made of ferritic-pearlitic ductile iron. Composite zones were produced in castings made of ferritic-pearlitic ductile iron at the casting edge. The reinforcing phase for the composite zone was TiC carbide, obtained by in-situ synthesis of substrates introduced into the mould in the form of compacts. The composition of the substrates of the reaction of the TiC synthesis was next enriched with an Fe filler added in an amount of 10 and 50 wt. % to investigate the possibility of changing the hardness of the composite zone. The addition of filler changed the surface fraction and the average size of TiC precipitates. In the case of the 50 wt. % addition, a tenfold reduction in the dimensions of the carbides was obtained. This increased their surface fraction relative to the compact composition containing only 10 wt. % of the filler. Changes in mechanical properties were analysed within the zone area by the measurement of hardness HV. The study showed a gradual decrease of the zone hardness in function of the amount of the filler added. This trend was also true as regards the composite zone in castings, where a significant refinement and increased surface content of the TiC precipitates was observed.

PL

W pracy omówiono metodę wytwarzania stref kompozytowych w odlewach z ferrytyczno-perlitycznego żeliwa sferoidalnego. Faza wzmacniająca strefy kompozytowej był węglik tytanu (TiC), uzyskany w wyniku syntezy in situ substratów wprowadzonych do formy w postaci wyprasek. Do kompozycji substratów reakcji syntezy TiC wprowadzono wypełniacz, proszek Fe w ilości 10 i 50 %mas. w celu zbadania możliwości zmiany twardości strefy kompozytowej. Dodatek wypełniacza spowodował zmiane udziału powierzchniowego oraz średniej wielkości TiC. W przypadku 50 %mas. dodatku wypełniacza otrzymano dziesięciokrotne zmniejszenie wymiarów węglików. Analizowano zmiany mechaniczne w obrębie strefy, badając jej twardość HV. Badana wykazały stopniowy spadek twardości strefy wraz z ilością dodawanego wypełniacza. Tendencja ta dotyczyła również strefy kompozytowej odlewu, w którym stwierdzono znaczne rozdrobnienie wydzieleń TiC i wzrost ich udziału powierzchniowego.

18

Composite zones obtained by in situ synthesis in steel castings

Olejnik E., Sobula S., Tokarski T., Sikora G.

Archives of Metallurgy and Materials

|

2013

|

Vol. 58, iss. 3

769--773

EN

Application of in-situ technique allows for fabrication of composite zone in the casting with a matrix of cast steel with low carbon content. The reinforcing phase in the composite zone is titanium carbide, produced by the synthesis of substrates introduced into the mould in the form of pressed compacts. Metallographic studies were performed in order to determine of homogeneity of composite zones and characteristic features existed in transition area between the composite zone and core of the casting. The transition areas of composites zone were blurred and there were no discontinuities caused by poor bonding between the composite zone and the core of the casting. To confirm the correct run of the TiC synthesis, phase analysis was performed of the base alloy as well as composite zone. The results of this examination indicated that there were two phases in composite zone, i.e. α Fe and TiC and only α Fe was observed in base alloy. Changes of mechanical properties in the composite zone were examined, measuring its hardness HV. The average hardness values of the base alloy and composite zone were 175±4 and 696±201 HV, respectively.

PL

W odlewie z ferrytycznego staliwa o niskiej zawartosci węgla, otrzymano strefy kompozytowe. Fazą wzmacniającą strefy kompozytowej był węglik tytanu TiC, uzyskany w wyniku syntezy in situ substratów, wprowadzonych do formy w postaci wyprasek. Przeprowadzono badania metalograficzne stref kompozytowych w celu określenia jednorodności otrzymanej strefy kompozytowej oraz charakteru obszaru przejściowego: strefa kompozytowa - rdzeń odlewu. Obszar przejściowy, pomiędzy strefa kompozytowa, a rdzeniem odlewu, charakteryzował się gradientowym rozkładem TiC oraz brakiem nieciągłości. W celu potwierdzenia prawidłowego przebiegu procesu syntezy TiC, przeprowadzono analizę fazową stopu bazowego oraz otrzymanej strefy kompozytowej. Potwierdzono, że w obrębie strefy kompozytowej występują dwie fazy tj. α Fe i TiC, a stop bazowy zawiera wyłącznie α Fe. Analizowano zmiany mechaniczne w obrębie otrzymanej strefy kompozytowej, badając jej twardość HV. Średnia wartość twardości stopu bazowego oraz strefy kompozytowej wynosiła odpowiednio 175±4 i 696±201 HV.

19

Composite zones produced in situ in the Ni3Al phase

Olejnik E., Janas A., Sikora G., Tokarski T., Nowak J.

Archives of Foundry Engineering

|

2013

|

Vol. 13, iss. 1

107--112

EN

The study presents the results of research on the development of composite zones in castings based on the intermetallic phase of Ni3Al. Composite zones were obtained by placing packets with substrates for the reaction of titanium carbide in a foundry mould. To provide a variable carbides content in the composite zone, two compositions of the packets were prepared. The first packet contained only substrates for the reaction of TiC synthesis; the second one also contained a filler. The resulting composite zones in castings were examined for the filler effect on changes in the volume fraction, size and morphology of carbides in the zone. In addition, the effect of filler on the mechanical properties of the zone was verified, observing changes of Vickers hardness in this area. It was found that the presence of filler in the composition of the packet for synthesis reduced the content of carbides, as well as their size and morphology. Lower surface content of carbides reduced hardness of the zone, which enabled smooth control of the mechanical properties. At the same time, the use of the selected filler did not disturb the course of the TiC carbide synthesis.

20

Efektywność metody in-situ w usuwaniu zanieczyszczeń ropopochodnych

Nguyen Thi Bich Loc Nguyen Thi Bich

Zeszyty Naukowe. Inżynieria Środowiska / Uniwersytet Zielonogórski

|

2012

|

nr 148 (28)

15-23

PL

Badania prowadzono w warunkach laboratoryjnych z wykorzystaniem gleb zanieczyszczonych produktami ropopochodnymi. Próbki gleb pobrano: na stacji kolejowej (przy torach kolejowych) w Zielonej Górze, na Lotnisku w Przylepie pod Zieloną Górą (w miejscu tankowania benzyny), oraz na stacji benzynowej w Zielonej Górze (ulica Konstytucji 3-maja). Badania mikrobiologiczne prowadzono w laboratorium Instytutu Inżynierii Środowiska, Uniwersytetu Zielonogórskiego w okresie letnim 2010 i 2011 roku. Badania mikrobiologiczne polegały na określeniu: ogólnej liczby bakterii w pobranych próbach gleb oraz hodowanie wybranych szczepów bakterii na pożywkach sztucznych (pożywka stała i płynna) w celu zastosowania niektórych z tych szczepów do gleby zakażonych różnymi substancjami zawierającymi węglowodory (benzyna, ropy naftowa i olej). Badanie in-situ przeprowadzono w sposób wazonowych na glebie lekko-gliniastej [...].

EN

The research was carried out in laboratory conditions with the soils which was contaminated with product of petroleum origin. The soil tests were taken from: a railway station (by railway track), air field Przylep (from place to fill up with petrol of plane), petrol station in the street Konstytucja 3-maja in Zielona Góra, Poland. The microbiological studies was analysed in laboratory Institute of Environment Engineering, University of Zielona Góra, Poland in the summer 2010 and 2011of the years. The microbiological lies in determination: generally number of bacteria in the soil tests, majority number of genus bacteria in the soil tests and relationship of bacteria in comparison with generally number of bacteria in the soil controls and cultivating the chosen of genus bacteria in the artificial medium (solid and liquid) in order to apply some genus of the bacteria in to the soils, which was contaminated with product of petroleum origin (petrol, petroleum and oil). carry out a. conduct a. do research; The research in-situ was carried out into on ways of vases with the clayey of light soil [...]