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Subgrade Resilient Modulus Calculator - ACPA This web applet, based on the conversion factors included in NCHRP Report 128, “Evaluation of AASHTO Interim Guide for the Design of Pavement Structures,” allows you to quickly estimate the Subgrade Resilient Modulus (M RSG) from either a California Bearing Ration (CBR) or Resistance Value (R-value) measurement
Comparison of the resilient modulus and the Calfornia Bearing Ratio in . . . Its value can be determined by direct and indirect methods The resilient modulus is measured directly by dynamical triaxial test meanwhile several methods exist to determine its value indirectly, among which the calculation from the CBR value is proposed mostly by the literature and practice
Using Cyclic CBR Method to Determine Resilient Modulus of . . . - Crojfe Opiyo (1995) developed a method called cyclic CBR (cCBR) to determine the resilient modulus (M r) of granular road construction materials using CBR testing equipment The present study tested the cCBR method on silty, fine sand stabilised with lime and a lime-cement mixture
Modulus of resilience: Definition, Formula, Units, Calculate For a particular material, the modulus of resilience is the maximum resilience per unit volume of the object To learn more about the modulus of resilience, its formula, units, and how to calculate it, continue reading the article
Evaluation of Resilient Modulus of the Subgrade and Granular Layer A . . . As per IRC guidelines, the resilient modulus of the subgrade is evaluated using an empirical correlation with its CBR value, and for the base course, it uses an empirical re-lationship with the thickness of the granular layer and the resilient modulus of the subgrade
CBR and K-value to Modulus of Elasticity (E) conversion In rigid pavement design, the foundation modulus can be defined as either the subgrade reaction modulus (k) or the elastic modulus (E) However, all structural calculations are done using the elastic modulus (E)