This investigation addresses the reinforcement of rammed earth (RE) structures by integrating carpet polyacrylic yarn waste (CPYW) generated from the carpet production process and employing Ground Granulated Blast-Furnace Slag (GGBS) as a stabilizer, in conjunction with alkali activators potassium hydroxide (KOH), to enhance their mechanical properties. The study included conducting Unconfined Compressive Strength (UCS) tests and Brazilian Tensile Strength (BTS) tests on plain samples, GGBS-stabilized (SS) samples, CPYW-reinforced (CFS) samples, and samples reinforced with a combination of GGBS and CPYW (SCFS). The results showed that the mechanical and resistance properties of the CFS and SCFS samples were improved; these findings were confirmed by the presence of more cohesive GGBS gel and fibers as seen in FE-SEM and microscopic images. Therefore, the use of GGBS and CPYW, both separately and in combination, is suggested as a viable approach to enhance mechanical performance and reduce the brittle failure propensity of RE structures. This study achieved significant improvements in the mechanical behavior of RE structures by integrating CPYW and alkali-activated GGBS. Results showed a 370% improvement in UCS and a 638% increase in BTS than the plain sample. These enhancements demonstrate the potential for using industrial waste in eco-friendly, high-performance construction materials.
Carpets are widely used in living spaces for beautiful appearance, heat, and sound insulation. Cleaning carpets is essential for both their lifespan and health and hygiene. Washing operations are carried out at regular intervals in carpet-washing factories.Industrial carpet washing operations must be done consciously because a significant amount of water and time is consumed during these processes. In addition, problems such as discoloration and strength losses may be encountered in delicate carpets. In this study, stained carpets were washed at mediums with and without ultrasound at room temperature at different times. Mud stain was used as an example of particle dirt. The original unwashed carpet without stain was taken as a reference and compared with the washed carpet by evaluating the color differences and changes in the yellowness indexto check the amount of stain removal. The color differences (Da*, Db*, DL*, DC*, Dh*, DE*) were close to zero, and the differences in the yellowness index were low, so it was concluded that the stained carpet was cleaned and turned to the original form after washing. The washing process was evaluated as successful because the color and yellowness index of the washed carpet were close to the unwashed carpet. Effects of washing type (with and without ultrasound), washing agent (with and without detergent), and washing time (30, 60, and 90 minutes) are significant for alpha=0,05 in washed carpets according to the original carpet. Interactions between parameters are also significant. If the washing conditions are consciously adjusted, ultrasonicwashing can be an alternative to the soaking process in carpet washing.With ultrasonic washing, it can be possible to shorten the duration of the wetting step and effectively clean sensitive carpets in softer conditions without damaging them.It would beuseful to carry out studies that reduce water usage by optimizing the amount of washing baths in the future.
State of the problem. In the article, it is justified that the provision of a green economy based on environmentalization, modernization, innovation and new technologies in the production and processing of agricultural products leads to a radical improvement of production, protection of natural capital and ecosystem services, and reduction of pollution and greenhouse gas emissions. It was noted that the regulation of agricultural production systems in the country requires the expansion of agricultural practices that increase productivity and production, contribute to the protection of ecosystems, adaptation to climate change, extreme weather events, droughts, and floods. Research object. It is the production, processing, consumption and export of agricultural products of Azerbaijan. The purpose of the study is to promote the production of ecologically clean and export-important consumer products in Azerbaijan and the stimulation of its export. Introducing the country to the world with branded products, attracting foreign investments to this field, increasing the population's interest in the agricultural field, and attracting innovative technology to the field are also considered important. It is the determination of the damage caused by the impact on the agricultural sector and nature due to the degradation of the growing environmental components. Minimizing losses at this stage and optimizing the development of the agro-industrial complex is one of the main factors. Methodology. Generalization, historical, statistical, systematic analysis and comparison methods were used in the preparation of the article. Scientific novelty of the research. Implementation of the production and processing of ecologically clean agro-industrial products that do not harm human health and the environment, regular monitoring of the ecological condition of the soil, and the provision of increasing the production and assortment of ecologically clean export-oriented food and light industrial products. Research results. In the article, it is explained that the development of the green economy in Azerbaijan is an integral part of the state policy, and it occupies an important place in the state administration, on the example of export-oriented food and light industrial products. It is noted that the sustainability of the development of the green economy acts as a criterion for the production of competitive products of the state, which contributes positively to the provision of people's vital needs.