Ta'lim fidoyilari
Amirov Tursoat Jumayevich
Turayev Avazbek Xoliyar o'g'li
10.5281/zenodo.19044169
Annotatsiya
Ushbu maqolada Kaliforniya mustahkamlik koeffitsiyenti (California Bearing Ratio – CBR) ko‘rsatkichini laboratoriya sharoitida aniqlashning to‘liq metodologik tavsifi keltirilgan. Xalqaro standartlar (ASTM D1883, AASHTO T193) asosida CBR sinovining bosqichma-bosqich bajarilishi – jihozlar tavsifi, namuna tayyorlash, Proktor sinovi, 96 soat namlash, penetratsiya sinovi va natijalarni hisoblash tartibi batafsil yoritilgan. Maqola yo‘l qurilishi muhandislari va laboratoriya mutaxassislari uchun amaliy qo‘llanma sifatida xizmat qiladi.
Kalit so'zlar:
California Bearing Ratio (CBR), grunt mustahkamligi, laboratoriya sinovi, penetratsiya sinovi, Proktor sinovi.
Foydalanilgan adabiyotlar
1. ASTM International. (2016). *ASTM D1883-16: Standard Test Method for California Bearing Ratio (CBR) of Laboratory-Compacted Soils*. West Conshohocken, PA: ASTM International. 2. AASHTO. (2013). *AASHTO T 193-13: Standard Method of Test for The California Bearing Ratio*. Washington, D.C.: American Association of State Highway and Transportation Officials. 3. AASHTO. (2021). *AASHTO T 180-21: Standard Method of Test for Moisture Density Relations of Soils Using a 4.54-kg (10-lb) Rammer and a 457-mm (18-in.) Drop*. Washington, D.C.: AASHTO. 4. ASTM. (2012). *ASTM D698-12: Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort*. West Conshohocken, PA: ASTM International. 5. AASHTO. (2021). *AASHTO T 99: Standard Method of Test for Moisture–Density Relations of Soils Using a 2.5-kg (5.5-lb) Rammer and a 305-mm (12-in.) Drop*. Washington, D.C.: AASHTO. 6. Porter, O. J. (1938). The preparation of subgrades. Proceedings of the Highway Research Board, 18(2), 324–335. 7. Livneh, M., & Greenstein, J. (1978). A modified California Bearing Ratio test for granular materials. Geotechnical Testing Journal, 1(3), 141–147. 8. Yoder, E. J., & Witczak, M. W. (1975). Principles of Pavement Design (2nd ed.). John Wiley & Sons. 9. Transportation Research Board. (1962). Moisture Content and the CBR Method of Design (Special Report 40). Washington, D.C.: TRB. 10. Indian Institute of Technology Kanpur. (n.d.). California bearing ratio test. https://home.iitk.ac.in/~madhav/expt14.html 11. Kansas Department of Transportation. (2021). Determining an Acceptable California Bearing Ratio (CBR) Value for Kansas Subgrades Based on Pavement Distress Data (Report 03). https://rosap.ntl.bts.gov/view/dot/78811/
