The test procedures for determining Young’s modulus in concrete are complicated and time-consuming. Therefore, attempts to search for alternative methods of its determination are not surprising. The relationship between the value of compressive strength and Young’s modulus in concrete is known. However, the strength of this relationship in fibre-reinforced concrete has not been exactly described. The article attempts to investigate the strength of the correlation between Young’s modulus and the compressive strength of fibre-reinforced concrete. The influence of the amount of fibres on this relationship was also checked. Two types of specimen were used for the tests. The specimens differed in the content of steel fibres, 0.25% and 0.50%, respectively. In order to determine the correlation relationship, the method of linear regression and the coefficient of linear correlation were used. The use of the determination coefficient allowed us to examine the degree of explanation of one variable by another.

The objective of this paper is to propose effective methods to implement sustainable development principles among young people, both in schools and universities. The authors of this article recognize the significant potential among young individuals whose actions and choices have a substantial impact on the environment. By analyzing the knowledge and behaviors of young people towards sustainable development and environmental protection, based on surveys conducted among pupils and students from the south-eastern region of Poland, this paper identifies gaps that require improvement and proposes actions aimed at raising pro-ecological awareness among the youth. The analysis revealed that only 25% of the respondents have heard about the “Agenda for Sustainable Development – 2030”, 20% were familiar with the goals of sustainable development, and few have participated in initiatives for sustainable development. However, 58% of respondents claimed to engage in activities for environmental protection in their daily lives. The article also presents the degree of compliance with the assumptions of the 2030 Agenda for Sustainable Development on both global and local scales. Furthermore, the paper analyzes two aspects of students’ awareness of sustainable development: their knowledge of goals and documents, and their pro-ecological behavior in daily life. Based on the findings, this

Combination of factors such as: properly organized logistics process, lack of nonconformities, transport damages avoiding and transport in accordance Just In Time idea significantly reduces costs and streamlines the entire production process. This paper proposes the quality management tool for the logistics services assessment based on the results obtained in the selected company operating in Eastern Europe. Customers' expectations and perceptions were compared using the SERVQUAL method that concerns the service quality assessment in five areas such as: materiality, reliability, promptness, competency and empathy. The research method SERVQUAL allows assessing the service quality level and identifying company areas that requires corrective actions within the improvement process.

The features of quality, which is an ambiguous, gradual and very subjective concept, cause that there is no one absolute standard for it. Scientists are looking for ways of its evaluation and improvements of the existing methods. It relates to...

The problem of the structural failures is inextricably linked with the construction industry. A structural failure can be defined as the unintentional, violent destruction of a building object or its part, as well as structural elements of scaffolding, forming elements, sheet piling and excavation linings. Structural failures always entail financial and environmental losses that cause a big problem for companies. The analysis of the structural failures allows to indicate the causes that led to them, but also to introduce actions to help avoid them or decrease their appearance in the future. From the point of view of sustainability risk, human life, corporate responsibility, but also possible financial penalties, it is a very important element of the business process management in an enterprise. In the paper the structural failures occurring in Poland in 2015–2019 were analyzed based on data from the General Office of Building Control (GUNB). They are divided into two categories: caused by random factors and resulting from human error. Failures caused by human error were divided into those related to construction, used material and building operation (exploitation). The structural failures occurring during construction works, e.g., construction, renovation, demolition works, as well as in existing facilities, e.g., during the use of the facility but also in facilities excluded from use, were analyzed. Then, the individual causes of the structural failures were analyzed in terms of repeatability in each category. The risk priority number was calculated for the causes in the group “random events” and nine causes related to “human error”. Actions aimed at reducing the risk of future failures were proposed. The results of the analysis provide conclusions that constitute input data for the improvement of both the processes themselves and the procedures for design, construction and exploitation, or methods and frequency of inspections.