Architecture and Civil Engineering

Effect of microdispersed and volumetric fiber reinforcement on the strength and durability of self-compacting concrete

2025-03-14T07:05:59+00:00

This paper is devoted to research exploring the impact of popular in Kazakhstan ferrosilicon production technogenic waste – micro-silica on self-compacting concrete rheological and physic-technical properties and performance and durability improvement of building structures made of this concrete type utilizing volumetric fiber reinforcement. The paper provides the results of laboratory and industrial tests of self-compacting concrete mixtures (SCC) strength and operational properties. The most effective ratio of micro-silica as a filler in the binder and the optimal amount of low-modulus polypropylene fiber were selected to manufacture high-quality self-compacting concrete of C25/30, C30/35, C35/40, C40/45 classes produced on local raw materials. Examples of compositions confirming the possibility of up to 20% cement consumption reduction and increase the concrete frost resistance to F340 by using micro-silica, reduction of self-compacting concrete volumetric water absorption by up to 30%, increase the bending strength by up to 35% with the combined use of silica and polypropylene fiber in a right proportion. The research results provide practical value for self-compacting and cast concrete Kazakhstani manufacturers.

Development of technology for foaming keratin based on sheep's wool

2025-03-14T07:50:40+00:00

The purpose of this article is to evaluate the effect of wool fibers on the thermal conductivity and mechanical properties of cement. The use of sheep's wool as a cement admixture for the production of mortar or plaster provides a number of advantages for the environment and the energy sector. Moreover, in some regions of the country, it is considered as a waste, therefore, its use is characterized by a low cost. Currently, synthetic materials that do not ensure the stability of the foam mass, adversely affect the strength of cellular concrete and do not allow to obtain high-quality concrete with the specified physical and mechanical properties prevail. The use of protein foaming agents, characterized by high quality indicators, environmental cleanliness and production safety, is becoming more and more popular.

About time and architecture

2025-03-14T05:18:28+00:00

The article examines the relationship between architecture and time. The author explores the phenomenon of time in the context of the architectural process and aesthetic perception. He notes that architecture, as an art, is inevitably connected with time and space. The author identifies time as a universal form of being of matter, which determines the duration of existence and the sequence of changes in material systems. At the same time, he emphasizes that each particular form of matter is limited. Smirnov connects architecture with music and other arts, which, as is known, imply a sequence in time. However, he doubts that architecture is completely devoid of this phenomenon. He believes that the architectural process and the embodiment of the idea in space are also related to the process of aesthetic perception that takes place in time. Thus, the article offers a new look at the relationship between architecture and time, arguing that architecture cannot be completely separated from the processes occurring in time. She invites readers to reflect on the influence of time on architectural creativity and its perception.

Restoration and reconstruction of architectural heritage and architectural education in Central Asia and Kazakhstan

2025-03-14T06:24:24+00:00

The article analyzes the current state of the historical and cultural heritage of the countries of Central Asia and Kazakhstan in the context of modern challenges and threats. The problems of restoration and reconstruction of the architectural heritage of these countries are considered from the perspective of architectural education in the republics of Central Asia and Kazakhstan, which differ from each other in the countries of the region. Attention is drawn to the reorganization of architectural education, considering the processes of globalization and sustainable development of the region, as well as current trends in the assessment of historical and cultural heritage in the world.

Recreational areas on challenging terrains: concepts and global experience

2025-03-14T06:45:59+00:00

The presence of recreational areas in urban structures positively influences the emotional well-being of individuals and constitutes a key element of urban planning. Diverse terrain, including mountain slopes, ravines, and marshy areas, transforms into natural parks, serving as rich sources of inspiration and leisure. These natural formations provide unique opportunities for landscape design but, unfortunately, are often overlooked in urban development plans. A shift in urban planning strategy towards selecting such complex landscapes for recreational zones could significantly enhance the cityscape and improve the quality of life for its residents. This article explores the principles of selecting recreational areas with intricate terrain to meet the recreational needs of the population.