![modulus 6 backcalculation modulus 6 backcalculation](https://ascelibrary.org/cms/asset/69cb1da3-73a5-4c95-80a3-cfa15308ac40/6.gif)
These values are 35 to 69 MPa, 28 to 97 MPa, 7 to 96 MPa, and 21 to 62.
#MODULUS 6 BACKCALCULATION SOFTWARE#
FWD deflection data was used for determination of M R values using backcalculation software for CTB and CTSB layers. (2007) reports the range of resilient modulus values for some soil types, namely A-4, A-6, A-7-5, and A-7-6. The in-situ cores were obtained from CTB and CTSB layers which were tested for determination of M R values through Unconfined Compressive Strength (UCS) as per IRC:37-2018. In this research, three software programs, MODULUS 6.0, ELMOD 5.0 and EVERCALC 5.0, were used to do the elasto-static back-analysis and the DBSID program was employed for the dynamic backcalculation. Two study sections on SH and one on MDR of about 500 m length has been identified for the study. No visual distress was observed on both the road sections at the time of field surveys. For asymmetrical sections, two values are found: Z max and Z min. For symmetrical sections the value of Z is the same above or below the centroid. The field data has been collected from State Highway (SH) and Major District Road (MDR) around Lucknow, Uttar Pradesh. Section 9.6.2 Resilient modulus, Level 2 FWD testing, backcalculation, and adjustment for flexible pavement. To calculate the section modulus, the following formula applies: where I moment of inertia, y distance from centroid to top or bottom edge of the rectangle. Falling Weight Deflectometer (FWD) and destructives test method through cores. The main objective of this research study is to make a comparison of M R values for cement stabilized layers using non-destructive method viz. This paper deals with the investigation of the resilient modulus (M R) of stabilized pavement layers through field data collection on in-service flexible pavement sections which may be useful for design purpose. the computation of these two parameters (SNeff and keff ). In our country, there is no performance data available for CTB and CTSB layers in in-situ conditions. However, the pavement layer moduli backcalculation techniques used so far have been. Furthermore, cement base layers can improve the fatigue behaviour of asphalt surface layer and subgrade rutting over the short and long term. The results of the study suggest that the algorithm can be effectively incorporated into backcalculation software for multilayer flexible pavements. Use of cement stabilization in granular material is an effective technique to increase the stiffness of base and sub base layers and also in the thickness reduction in comparison to conventional layers. The proposed seed modulus generation algorithm does not suffer from the location and pavement type transferability constraints of most regression-based seed modulus generation methods. There are conventional methods available for designing of flexible pavement based on the past experience whereas for the design of Cement Treated Base (CTB) and Cement Treated Sub Base (CTSB) layers no such conventional methods are available.