Browse

The paper presents the results of investigations on the in-service behavior of concrete structures used in fruit and vegetable processing facilities, where environmental conditions are characterized by high chemical and biological aggressiveness. In such environments, concrete surfaces are continuously or periodically exposed to liquid media containing organic acids and microorganisms, as well as to significant variations in temperature and humidity. These factors lead to accelerated degradation processes, manifes...

The accumulation of glass waste has become a significant environmental concern worldwide, with millions of tons of glass discarded annually. Although glass is 100% recyclable, a substantial proportion still ends up in landfills due to inefficient collection systems, high processing costs, or limited market demand for recycled glass. In recent years, researchers and environmental policymakers have intensified efforts to identify alternative applications for this inert but non-biodegradable material, particularly in...

In an increasingly competitive economy, we are facing fierce competition in the construction materials industry, where the use of recyclable waste from demolitions has become more than a necessity. The compensation for the loss of certain properties, which could otherwise lead to a reduction in mechanical characteristics, has been achieved through the addition of nanoparticles with superior qualities. This paper will present the main nanoparticles introduced as subtle additives (ranging from 0.01 percent to a maxi...

In this paper, there are presented the characteristics of reinforced concrete structures that are subjected to a corrosive environment. These structures allow for the appearance and opening of short-term and long-term cracks within certain limits during operation, as well as the variation in the moisture of the concrete depending on the ambient humidity. The basic nature of the concrete allows it to react with acids, while its increased porosity enables the absorption of liquids and gases, including aggressive one...

The process of selecting and prioritizing investment project proposals in construction is characterized by multiple objectives and uncertainties due to incomplete information and the multitude and dynamics of factors that can intervene. Knowing their significance and influence on the final investment decision, it is a complex problem that requires a multi-critical analysis with both quantitative and qualitative factors, necessary for a good quantification and evaluation. In recent years, the increase in the comple...

The paper contains the results of experimental research on the elaboration of the composition and optimization of the properties of the self-levelling screed based on cement and sand, intended for the fulfilment of the intermediate layer of floors, including industrial enterprises with the aggressive environment; sedentary parts of tanks, basins; bunkers; different containers, etc. The reinforced self-levelling screed has an absolutely horizontal surface. It allows the application of finished layers of composite p...

In last years, recycling has become a strategic factor in global politics, a vital component and a cost factor for economic development and the progress of society as a whole, generating a number of major global concerns. Exceeding twice the sum of all materials used in construction, annual concrete consumption around the world amounts to approximately 10 trillion tones being by far the most used building material and the partial or total replacement of a component of its mass with recyclable waste has a major pos...