Olivér Fenyvesi

Olivér Fenyvesi
Budapest University of Technology and Economics · Department of Construction Materials and Technologies

PhD

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18
Publications
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83
Citations

Publications

Publications (18)
Article
Full-text available
An analytic-empirical model was developed to describe the heat transfer process in raw straw bulks based on laboratory experiments for calculating the thermal performance of straw-based walls and thermal insulations. During the tests, two different types of straw were investigated. The first was barley, which we used to compose our model and identi...
Article
Most of the thermal insulations in the construction industry market based on fossil raw material or need a huge amount of production energy. Nowadays, sustainable thermal insulation products are more popular, and the demand for these products on the market is increasing. Some of them reach the main material properties of artificial ones but usually...
Article
In the next decades many buildings and structures, constructed from autoclaved aerated concrete (AAC) will reach their end of lifetime, therefore solutions should be developed to recycle the resulting waste material. AAC blocks cannot be reused in the form of building blocks as traditional clay bricks. The typical form of AAC waste is crushed stone...
Conference Paper
Full-text available
Nowadays huge amount of thermal insulation materials have to be produced. Materials with high performance have high price, and the most popular thermal insulations have large environmental footprint and these are not able to biodegradation and their production needs high energy investment [1, 2]. One alternative the use of natural based biodegradab...
Article
Full-text available
EU laws have been the most effective driving force of Latvian and Hungarian environmental legislation in order to improve recycling of packaging waste. In Latvia and Hungary the waste diversion strategies have focused on establishing treatment capacity and setting up schemes for separate collection, which largely cover packaging waste. Despite all...
Article
Full-text available
Concrete is often sensitive to cracking, which could be the result of early age shrinkage. Cracks can cause the corrosion of steel reinforcements and reduce the lifetime of concrete structures. Altogether crack tendency of concrete can be influenced by many parameters in the concrete mixture. Laboratory tests have been carried out according to the...
Article
Full-text available
Freeze-thaw testing methods with different grade of severity have been applied to investigate the durability of – intentionally non air entrained – fibre reinforced concretes (FRC) mixed with nominally zero, 25, 50 and 75 kg/m3cold drawn steel fibres (30/0.5 mm). Concrete specimens were made with sulphate resistant Portland cement and were stored 2...
Article
Full-text available
Conventional steel reinforced concrete is often sensitive to cracking, and these cracks could be the result of early age shrinkage. Cracks can cause the corrosion of steel reinforcements reducing the lifetime of concrete structures. To reduce this problem fibre reinforced concrete (FRC) is one possible solution. Laboratory tests have been carried o...

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