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Showing 1 to 19 of 19 for “"California Bearing Ratio"”.
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Examination of the Correlation between Shear Strength, California Bearing Ratio, and Index Properties of Fine-grained Soil
<p>Abstract</p> <p>California Bering Ratio (CBR) is used to evaluate the strength of the pavement materials by comparing bearing capacity of the material with that of a high-quality crushed stone. This test adopted by transportation agencies and widely used in the design and analysis of pavement. …
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Pavement thickness design using reclaimed hydrated Iowa class C fly ash as a base material
… Extensive strength testing was conducted using California Bearing Ratio and unconfined compressive strength tests. Results of strength testing were correlated to structural layer coefficient for use in a flexible pavement design method. A general test and design method was also developed for …
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Cálculo de cargas de roda equivalente no dimensionamento de pavimentos flexíveis: programação automática
… of two main parts: 1) Historical Review of the California Bearing Ratio (CBR) Method, since its origin in 1928, describing work related to equivalent wheel load and the present criterium for its determination. 2) A computer program for the determination of equivalent single wheel load (ESWL), …
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A.Ü. Ziraat Fakültesi Araştırma ve Uygulama Çiftliği yollarının yapısal özellikleri ve geliştirme olanaklarının belirtilmesi
… tests, direct shear tests, compaction tests. California bearing ratio, permeability, specific weight; and unit weight tests were performed. The pavement design of the roads under the con sideration were done by using the group index method CBR method and the KGM method. As a conclusion the …
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Evaluation of asphalt stabilized layer equivalency factors for use in airfield flexible pavement design
A California Bearing Ratio (CBR) design method has been used for Air Force airfield pavement design since the late 1920s. The procedures, calculations, and related nomographs have been updated to reflect developments in the pavement design, pavement analysis, and unique landing gear configurations …
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Characterization of Recycled Concrete for use as Pavement Base Material
… and field testing. Laboratory tests included California bearing ratio (CBR), unconfined compressive strength (UCS), stiffness, freeze-thaw cycling, moisture susceptibility, abrasion, salinity, and alkalinity evaluations. Non-destructive testing was utilized in the field to monitor seasonal …
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An investigation of the effect of dynamic and static loading to geosynthetic reinforced pavements overlying a soft subgrade
… and low strength. Failure, in terms of bearing capacity can occur when pavements are constructed over such soft soils. When road pavements, which are constructed over soft soils, are subjected to cyclic traffic loading (dynamic in nature), rapid deterioration of the base layer material …
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Contractor Variability in Construction of Cement Treated Base Layers
… significant predictor variables associated with California bearing ratio (CBR), Clegg impact value (CIV), 7-day unconfined compressive strength (UCS), and 28-day UCS at the I-84 sites include reclaimed asphalt pavement (RAP) content; cement content; amounts of aggregate particles finer than the …
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Effects of Reclaimed Asphalt Pavement on Mechanical Properties of Base Materials
… susceptibility of each material blend. The California bearing ratio (CBR) test was used to measure strength, the free-free resonant column test was used to measure stiffness, and the tube suction test (TST) was used to measure moisture susceptibility. Once all the testing was completed, a …
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Evaluation of the suitably of proposed site for construction of photovoltaic solar facility at Kakamas in the Northern Cape of South Africa
… to be one of the preferred areas for the generation of solar energy in South Africa, and even in the world, due to its abundant solar radiation. Although this area has abundant potential for solar power generation, not all the areas are suitable for construction of solar plant facilities …
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Soil stabilization utilising wastepaper sludge ash
… lime-stabilization of sulfate-bearing clay soils, there has been increasing concern over the damage caused by the expansion which is produced when sulfate-bearing soils are encountered. The main objective of this research was to investigate the potential of utilizing WSA, an …
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Development and validation of a stress-based procedure for the design of military flexible pavements
… is based on the U.S. Army Corps of Engineers California Bearing Ratio (CBR) design methodology. The CBR design methodology has its roots on a very simple, but still reasonable theoretical approach, where the pavement is modeled by a single layer system described by the Boussinesq half-space …
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Mechanistic-Empirical Pavement Design Procedure For Geosynthetically Stabilized Flexible Pavements
… stabilized flexible pavements. The California Bearing Ratio (CBR) of the subgrade after construction was approximately 8%. The pavement section is was divided into nine individual sections, each approximately 15 m long. Sections one through three have a 100-mm-thick limestone base …
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Estabilização de solos tropicais com resíduos da construção civil e escória de aciaria para uso em pavimentação
… de resistência à compressão simples (RCS) e CBR (California Bearing Ratio) foi investigado por análise de equações de regressão e Metodologia de Superfícies de Resposta. Além disso, os materiais e produtos gerados foram investigados por técnicas de fluorescência de raios-X (FRX), difração de …
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Performance evaluation of unconventional aggregates from primary and recycled sources for construction platform and low volume road applications
… constructed over an engineered subgrade with a California bearing ratio (CBR) of 1%; meanwhile, the remaining 8 test sections were built with regular size dense-graded base course aggregates over a modified subgrade with a design strength of CBR = 3%. Considering the dimension-specific …
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Evaluation of selected airport pavements in New Mexico
… test results, a strength parameter called the California Bearing Ratio (CBR) value of the subgrade soils is determined. Also, the CBR value of base aggregate is determined. These CBR values are used to rank the airport pavements according to the FAAs Advisory Circular 150/5320 — 6D. Asphalt …
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Assessment of Improvement in Unpaved Roadway Performance Using 3D Geogrids Under Cyclic Loading
… pavement structure and its performance. Three California Bearing Ratios (CBR) of the subgrade were tested: 1%, 2%, and 4%; for each CBR value, three base thicknesses were tested: 50 mm, 100 mm, and 200 mm. The effectiveness of geogrid reinforcement in roadway performance improvement was …
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Targeting aggregate marginality from a chemical and materials perspective to improve pavement performance
… short time and can cause ageing and deterioration of the structure of aggregates, a quantitative evaluation of its effect on road aggregates over the lifetime of the pavement is usually disregarded and properties of aggregates are assumed to be constant over time and location. In order to …
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Sustainable pavement applications utilizing quarry by-products and recycled/nontraditional aggregate materials
… in landfills or interfere with quarry operations. With recent focus on sustainable construction practices and the scarcity of natural resources, more common and sustainable uses of by-product materials such as QB are becoming imperative. This dissertation focuses on the introduction and …