180 Journal of Engineering, Mechanics and Architecture www. grnjournal.us AMERICAN Journal of Engineering, Mechanics and Architecture Volume 02, Issue 4, 2024 ISSN (E): 2993-2637 CALCULATION OF COMPOSITION AND PROPERTIES OF DISPERSED MATERIALS BASED ON BASALT COMPOSITION assist. Tillayev M.A. assist. Murtazayev B.A. student. Abduraxmonov I.M. Jizzakh polytechnic institute Abstract: For the development of the production of fiber concrete and concrete products based on waste, requirements are set for the efficiency and quality of construction work. In order to successfully implement these, it is necessary to achieve a reduction in total energy expenditure in materials and constructions, development of production, reduction of construction cost and labor, weight of buildings and structures, repair and their construction and operation. Key words: Basalt stone, basalt fiber, basalt reinforcement, fiber concrete, cement, microsilica. The presence of a large amount of portlandite Ca(ON)2 in concrete during the hardening process can have a negative effect on basalt fibers. Therefore, various active additives can be used to bind it: microsilica, metakaolin (thermally treated kaolin), ash slag. As a result of adding basalt fiber and active additives to concrete, its water absorption is also increased, so it is advisable to use special superplasticizers. The composition of the concrete mixture based on basalt fiber and microsilica is presented in Table 1. Table 1. Composition of concrete compositions with basalt fiber and microsilica Raw material name Size Content without additives (T-0) T-11 (micro) T-12 (micro) T-13 (micro) Cement kg 0,500 0,470 0,460 0,450 Sand kg 1,500 1,500 1,500 1,500 Microsilica kg - 0,30 0,40 0,50 % 6 8 10 Superplasticizer kg 0,0015 0,0015 0,0015 0,0015 % 0,5 0,5 0,5 0,5 181 Journal of Engineering, Mechanics and Architecture www. grnjournal.us For the preparation of samples, Ohangaron Portland cement was used as a dispersive additive - construction sand with a particle size of no more than 2.5 mm. The composition of 3 types of composites with more than 100% addition of Jizzakh basalt fibers as reinforcing fibers was calculated: 5 mm, 10 mm, and 15 mm basalt fiber samples. Concrete, including an additional component, increases the resistance to shock loads or spreading to the uniform outflow of water. If the compressive strength of the tiles is 90% on a cold day and 70% on a hot day according to the compressive and bending strength of the concrete class, the product is allowed to be sold. 90% of the strength of this concrete composition is achieved after 10-11 days of hardening, and 70% of the design is achieved after 3-4 days. May vary slightly depending on curing conditions and cement quality. The main function of basalt fiber is to provide plastic properties and prevent cracking during compression. Basalt concrete is used in various fields of modern construction projects. As a rule, the use of the material is economically effective with a relatively low increase in price when it is necessary to increase a number of properties. If a similar situation occurs, the composition of basalt concrete is very suitable. Figure 1. Appearance of samples. Study of physical and mechanical parameters of concrete samples with basalt fibers 5 mm long. Table 2 shows the 7-day compressive strength of samples with 5 mm basalt fiber added. Table 2. 7-day compressive strength of samples with 5 mm added basalt fiber Mechanical resistance of samples to compression Sample Test 1 Test 2 Test 3 Average indicator Control sample 185 kg/sm2 185 kg/sm2 190 kg/sm2 186 kg/sm2 Basalt fiber 1% 195 kg/sm2 190 kg/sm2 188 kg/sm2 191 kg/sm2 182 Journal of Engineering, Mechanics and Architecture www. grnjournal.us Basalt fiber 2% 200 kg/sm2 205 kg/sm2 195 kg/sm2 200 kg/sm2 Basalt fiber 3% 195 kg/sm2 200 kg/sm2 190 kg/sm2 195 kg/sm2 Figure 2. 7-day compressive change diagram of concrete samples with basalt fibers added 5 mm long. As it can be seen from our experiments, 2% and 3% of basalt fibers added to the cement mass of fibroconcrete with 5 mm long basalt fibers gave good results. As the optimal composition of basalt fiber-based fiber concrete, we selected fiber concrete with 2% shrinkage compared to 5 mm long cement mass. References 1. 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