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(Automatic translation)

Estimated equivalent elastic modulus in the surface of the subbase and subgrade set as a foundation for recycling projects in Cuba

Reynier MOLL MARTÍNEZ
Profesor Asistente. Instituto Superior Politécnico José Antonio Echeverría (Cujae). Facultad de Ingeniería Civil. Departamento de Viales. Grupo de Investigación de Pavimentos y Explanaciones Viales (19390 La Habana, Cuba)

Eduardo TEJEDA PIUSSEAUT
Profesor Titular. Instituto Superior Politécnico José Antonio Echeverría (Cujae). Facultad de Ingeniería Civil. Departamento de Viales. Grupo de Investigación de Pavimentos y Explanaciones Viales

Félix Michael HERNÁNDEZ LÓPEZ
Profesor Asistente. Instituto Superior Politécnico José Antonio Echeverría (Cujae). Facultad de Ingeniería Civil. Departamento de Viales. Grupo de Investigación de Pavimentos y Explanaciones Viales

ABSTRACT

Among the factors that intervene in the design of recycled road signs is the resistance that can take advantage of the old firm, which is the foundation of the new design. Depending on the depth of the recycling, the new foundation will consist of the original subgrade and the layers of the firm that remain after milling. In the article the strength of the foundation is estimated from the in situ evaluation of these layers by means of the information offered by the Dynamic Cone Penetrometer (DCP), determining the elastic modulus of the layer set by evaluating its resistance simulating the load test with plate, applying an analytical procedure, with a multilayer model. Statistical processing is also applied to determine the characteristic value of a sample of ensemble modules, evaluated analytically, in a section of track under study. Finally, a mathematical model is obtained by linear regression to estimate the equivalent modulus of elasticity of the set of layers that remains after milling.

KEYWORDS

Construction, Firm, Recycled, Environment, Elastic module, Multilayer model, Recycling in situ, Surface module, Computational modeling.

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