English Login
CAUTARE:
 
 
Numar curent     Arhiva     Etica publicatiei     Domenii articole     Informatii autori     Colegiul editorial     Abonare     Contact
     
  Numarul 1/2013

Volumul 4 (2013), Nr. 1

Consideratii privind eliminarea deseurilor biologice prin incinerare. Studiu de caz: statia de epurare a apelor uzate Oradea
Considerations for biological waste disposal by incineration. Case study: wastewater treatment Oradea station
Gheorghe-Constantin Ionescu, Emil Gligor, George-Lucian Ionescu

Prin implementarea prevederilor legale Ón activitatea curentă a agentilor economici şi a administratiilor publice locale, se preconizează că impactul gestionării deşeurilor asupra mediului şi sănătătii umane se va reduce semnificativ. Pentru Óndeplinirea obiectivelor de mai sus este necesară implicarea practic a Óntregii societăti, reprezentată prin autorităti publice, generatori de deşeuri, asociatii profesionale, societatea civilă.

Cuvinte cheie: deşeuri biologice, incinerare

By implementing legislation in the activity of economic agents and local government, it is expected that the impact of waste management on the environment and human health will be significantly reduced. To achieve the above objectives the need to involve virtually the entire society, represented by public authorities, waste generators, professional associations, civil society.

Keywords: biological waste, incineration

Cercetari experimentale privind utilizarea adaosurilor de zgura granulata de furnal in beton. Determinarea experimentala a valorii coeficientului k. Partea 1
Experimental research on the use of granulated blast furnace slag additives in concrete. Experimental determination of the k coefficient value. Part 1
Dan Paul Georgescu

In aceasta lucrare se prezinta baza teoretica si determinarile experimentale desfasurate la UTCB in vederea determinarii coeficientului k, care indica contributia adaosurilor de zgura din betoane pentru obtinerea unei rezistente echivalente cu cea a unui beton fara adaosuri. Aceasta reprezinta o prima etapa importanta care trebuie parcursa in conformitate cu abordarile moderne privind stabilirea performantelor echivalente ale betonului in cazul utilizarii adaosurilor in beton.

Cuvinte cheie: beton,adaos, zgura, coeficient k

This paper presents the theoretical and experimental determinations performed in UTCB to determine the coefficient k, which indicates the contribution of slag additives in concrete to achieve an equivalent strength to that of concrete without additives. This is an important first step that must be covered in accordance with the modern approach to establish equivalent performance of concrete with additives.

Keywords: concrete, additive, slag, k coefficient

The use of solar energy for air-conditioning in the cold season by employing a heating pump on lithium bromide -water solution
Anica Ilie, Razvan Calota

The authors of the present paper discuss the results following the monitoring of a refrigerating plantís performances with absorption of lithium bromide -water solution, where the evaporator, representing the cold source, is fed with hot water prepared in a system of solar panels. Furthermore, they include a working scheme which can be used in both hot and cold seasons, resulting in a substantial reduction of the conventional energy use, with a direct effect on the protection of the surrounding environment.

Keywords: renewable energy source, environment protection

Water flow adjustment of pumps in heating stations
Emilian Stefan Valea, Ioan Sarbu, Tamara Pampu

In urban heating stations the heat agent circulation between the energy source and consumers is assured by pumps, which take part to the energy consumption of the system in the operation period. The number, the position, and the technical characteristics of these pumps are established according to the chosen type of the heating system, the thermal power and the operating regime. Using variable rotation speed pumps it is possible to have a continuous control over the water pressure according to the thermal load at a certain moment. In this paper are presented and analyzed some optimization solutions of pumps operation in urban heating stations from energy point ofview.

Keywords: heating stations, energy saving, variable speed centrifugal pump, variable frequency drives

Cercetari experimentale privind utilizarea adaosurilor de zgura granulata de furnal in beton. Cercetari experimentale pentru determinarea caracteristicilor de rezistenta si durabilitate a betoanelor preparate cu cimenturi tip II/A-S, III/A si respectiv cu ciment tip I si adaosuri de 10% si 37% zgura. Partea 2
Experimental researches on the use of granulated blast furnace slag additives in concrete. Experimental researches to determine the strength and durability characteristics of concretes prepared with cement type II / A-S, III / A and type I cement and of 10% and 37% slag additives. Part 2
Dan Paul Georgescu

Lucrarea prezinta rezultatele unor incercari de laborator desfasurate la UTCB pentru determinarea si compararea valorilor unor caracteristici de rezistenta si durabilitate a betoanelor preparate cu cimenturi tip II/A-S, III/A si respectiv cu ciment tip I si adaosuri de 10% si 37% zgura. In prima parte a articolului s-au prezentat baza teoretica si determinarile experimentale care trebuie efectuate in vederea calcularii coeficientului k, care indica contributia adaosurilor de zgura din betoane pentru obtinerea unei rezistente echivalente cu cea a unui beton fara adaosuri.

Cuvinte cheie: beton, adaos, zgura, rezistenta, durabilitate

This paper presents the results of laboratory tests performed on UTCB for determining and comparing the values of strength and durability characteristics of concretes prepared with cement type II / A-S, III / A and Type I cement and 10% and 37% slag. In the first part of the article were presented the theoretical and experimental determinations to be carried out to calculate the coefficient k, which indicates the contribution of slag additives to achieve an equivalent strength to that of concrete without additives.

Keywords: concrete, additive, slag, strength, durability

Usage Mobile Phone for Pavement Distresses Measurement in Irbid city - Jordan
Bara Al-Mistarehi

The main objective of this research work was to investigate the potential using camera of mobile phone system as one of the most common techniques for spatial distribution studies. This study aims to use mobile camera phone in different locations of Irbid city, it was very easy to located alligator cracking and longitudinal & transverse cracking for different locations in Irbid city as an attempt to investigate cracks quantities using automated validated process to help non-experienced people to perform a distress generation.

 
Implementat de Matrix Rom
© 2020 Romanian Journal of Civil Engineering. All Rights Reserved.