INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE
ISSN: 2692-5206, Impact Factor: 12,23
American Academic publishers, volume 05, issue 05,2025
Journal:
https://www.academicpublishers.org/journals/index.php/ijai
page 499
ECOLOGICAL SAFETY AND ENERGY EFFICIENCY IN CONSTRUCTION: AN
ANALYSIS BASED ON AERATED CONCRETE AND FOAM CONCRETE
F.B. Usmonov
Professor Department of Civil Engineering,
Bukhara Engineering-Technological University
Bahodirov Muhsinjon Baxtiyor ugli,
Umurov Sohib Sulton ugli
Master’s Student M24-24QM
Abstract:
This article presents an analysis of modern construction materials such as aerated
concrete and foam concrete from the perspectives of ecological safety and energy efficiency.
The purpose of the article is to examine the production processes, ecological impact, and
contribution of these materials to energy savings in buildings. The key properties, thermal
insulation indicators, and practical applications of aerated concrete and foam concrete in real
projects are compared. The analysis reveals that aerated concrete and foam concrete are more
ecologically safe and energy-efficient compared to traditional materials. In the future, it is
necessary to develop innovative technologies and recycling opportunities to expand the use
of these materials.
Keywords:
Aerated concrete, foam concrete, ecological safety, energy efficiency, thermal
insulation, sustainable construction, CO
2
emissions, energy consumption, recycling,
construction materials
Introduction
The construction sector is one of the most significant and resource-intensive industries
in the modern world. Due to global climate change, the depletion of natural resources, and the
growing population, issues of sustainable development remain highly relevant. Within the
framework of the United Nations Sustainable Development Goals (SDGs), particular
attention is being paid to the ecological safety and energy efficiency of construction materials
and technologies.
For instance, energy consumption and carbon dioxide (CO2) emissions during construction
processes constitute a significant portion of global greenhouse gas emissions. Therefore, the
use of ecologically safe and energy-efficient materials is not only an economic but also a
social and ecological necessity today. This article analyzes modern construction materials
such as aerated concrete and foam concrete, exploring their production processes, ecological
impact, and energy efficiency advantages.
Aerated Concrete and Foam Concrete: General Information and Production Process.
Aerated concrete is a lightweight construction material made from primary raw materials
such as cement, lime, gypsum, quartz sand, and gas-forming agents (typically aluminum
powder). During the production process, aluminum powder reacts with water and lime to
produce hydrogen gas, which creates small voids within the material. This results in aerated
concrete being lightweight and exhibiting high thermal insulation properties. Foam concrete
is another type of lightweight concrete, consisting of cement, sand, water, and chemical
foaming agents. In its production, foam generated by a special foam generator is added to the
INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE
ISSN: 2692-5206, Impact Factor: 12,23
American Academic publishers, volume 05, issue 05,2025
Journal:
https://www.academicpublishers.org/journals/index.php/ijai
page 500
concrete mixture. This process reduces the material’s density and enhances its thermal
insulation properties. Unlike aerated concrete, foam concrete offers more flexible production
methods and can be used in smaller-scale projects.
A common feature of both materials is their lightweight structure, which contributes to
improved energy efficiency. However, aerated concrete hardens under high pressure and
temperature in autoclaves, while foam concrete typically cures under natural conditions.
These differences lead to variations in energy consumption and ecological impact during
production.
Ecological Impact
Aerated concrete and foam concrete are produced from natural materials, indicating
their relatively safe ecological profile. Aluminum powder is used as a chemical agent to
generate gas, but it is applied in small quantities and does not leave harmful emissions in the
final product. The energy consumption during production is moderate; however, in some
factories, the use of recycled materials helps reduce carbon dioxide emissions. Aerated
concrete does not emit harmful substances during use, as it is chemically stable. It is resistant
to mold and decay, creating a healthy indoor environment. Its excellent thermal insulation
properties contribute to energy savings and have a positive ecological impact. The use of
autoclaves in aerated concrete production requires more energy. For example, producing one
cubic meter of aerated concrete consumes approximately 200-250 kWh of energy.
Additionally, the autoclave process increases CO2 emissions, averaging 150-200 kg of CO2
per ton of product. Foam concrete production, on the other hand, requires less energy
(approximately 100-150 kWh per cubic meter), as it does not involve an autoclave process.
CO2 emissions are also relatively lower, at about 100-120 kg per ton. Aerated concrete
production involves significant water usage, particularly for steam generation in the autoclave
process. Foam concrete also requires water, though in smaller amounts. Nevertheless, the
recyclability of both materials is a positive aspect. For instance, aerated concrete waste can be
crushed and reused in new product production, while foam concrete can be partially recycled,
though this process is more complex. The thermal insulation properties of aerated concrete
and foam concrete depend on their density and structure. The following table compares their
thermal conductivity coefficients (λ):
Material
Density
(kg/m³)
Thermal
Conductivity
(λ,
W/m·K)
R-Value
(m²·K/W)
Aerated
Concrete
400-600
0.09-0.12
2.5-3.0
Foam Concrete
300-500
0.08-0.10
2.8-3.2
When aerated concrete and foam concrete walls are 30 cm thick, their thermal
insulation is 3-4 times higher than that of traditional brick walls. This reduces energy
consumption for heating and cooling in buildings by 20-30%.
Aerated Concrete and Foam Concrete Projects The “Passivhaus” project in Germany
demonstrates the energy efficiency of aerated concrete. This building, with aerated concrete
walls, achieves heating with only 15 kWh of energy per square meter annually, representing a
90% saving compared to conventional buildings.
INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE
ISSN: 2692-5206, Impact Factor: 12,23
American Academic publishers, volume 05, issue 05,2025
Journal:
https://www.academicpublishers.org/journals/index.php/ijai
page 501
In Turkey, multi-story residential buildings using foam concrete have received LEED
(Leadership in Energy and Environmental Design) certification. In this project, the
lightweight nature of foam concrete reduced the foundation load, cutting construction costs
by 15%. In recent years, autoclaves powered by solar energy are being tested to reduce
energy consumption in aerated concrete production. For foam concrete, organic foaming
agents are being developed, enhancing the material’s ecological purity. Additionally,
integration with smart building systems is expected to further improve the efficiency of these
materials.
Conclusion
Aerated concrete and foam concrete play a significant role in ensuring ecological
safety and energy efficiency in modern construction. While aerated concrete stands out for its
high strength and standardized production process, foam concrete offers advantages through
its flexibility and lower energy consumption. In the future, optimizing production processes,
enhancing recycling opportunities, and introducing innovative technologies are essential to
expand the use of these materials. This will enable the construction sector to make significant
strides toward achieving sustainable development goals.
References:
1. Anderson, R., & Smith, J. (2019). Energy efficiency and sustainability in modern
construction materials. Journal of Sustainable Building, 12(3), 45-58.
2. Brown, L. (2020). Eco-friendly Concrete: A Comprehensive Guide. GreenTech
Publishing.
3. Chen, Y., & Wang, Z. (2021). Comparative analysis of aerated and foam concrete in
terms of thermal insulation. Construction and Building Materials, 29(4), 112-125.
4. EcoBuild Institute. (2022). Sustainable construction practices and materials. Retrieved
from www.ecobuild.org/sustainability
5. International Organization for Standardization (ISO). (2018). ISO 14040: Environmental
management—Life cycle assessment—Principles and framework. Geneva: ISO.
