Abstract:

Concrete, one of today's most important building materials, has different special types. One of them is lightweight concrete (LC). With the studies carried out on lightweight concretes (LWC), the unit weights tried to be reduced, and ultra-light concretes (ULWC) were tested. While reducing unit weights, it is tried to improve properties such as compressive strength, sound absorption feature, thermal conductivity, and fire and frost resistance. Aggregates used in the production of ULWC undergo changes over time. Sustainable and nature-friendly ULWC works continue by evaluating waste materials. Using waste instead of using natural resources increases the interest and demand for ULWC. Thus, its economic, environmental, and sustainability draw attention. According to the types and dimensions of the aggregates used, ULWCs are not only used as heat and sound insulation materials in buildings but also aim to reduce the effects of earthquake forces by increasing the strength properties of the building and reducing its own load. In this study, the latest developments in ultra-light concrete are tried to be investigated by examining the literature sources. Comparisons are made between ULWC, and their advantages and disadvantages are evaluated.

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