Basalt fiber-reinforced polymer (BFRP) bars are a relatively new material. Due to lack of experience in its use, behaviour of BFRP reinforced concrete (RC) members should be fully investigated. Furthermore, existing design codes for fiber-reinforced polymer (FRP) RC structures do not consider this type of reinforcement. This paper presents the results of an experimental and numerical study of the flexural behaviour of a series of simply supported BFRP RC beams under short-term static loads. The beams were varied in terms of the reinforcement ratio and the influence of this parameter was analysed. It had a significant effect on the stiffness and flexural strength of the beams. The members then were analyzed by the Finte Element Method. Good agreement between the results of the experimental and numerical studies were observed.

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This paper presents a new type of composite structures - aluminium-timber beams. These structures have an advantage over other existing composite structures, because they are lighter. However, their application may be limited due to the high price of aluminium alloys. The authors of this article made an attempt to calculate the load-bearing capacity of an aluminium-timber beam.

The paper presents exemplary applications of aluminium and concrete composite structures. It discusses arguments for using these structures and reasons why in some cases it is advisable to replace a steel beam with an aluminium beam. Additionally, the article aims at analysing aluminium and concrete structures as a part of sustainable development. To this end, an analysis of materials used in aluminium and concrete composite structures was conducted. Moreover, the article presents a new method of joining an aluminium beam and a concrete slab, which may have a practical application.