![]() This paper was sponsored by TRB committee AFD50 Standing Committee on Design and Rehabilitation of Concrete Pavements.Further analysis verified the benefit of using the level 1 inputs over the ME default models for accurate pavement design and performance prediction. CTE values of concrete based on aggregate type were established for these material sources. The data demonstrated a slight deviation from the nationally calibrated models. The data collected offered an excellent opportunity to validate and refine the ME default level 2 models for estimating flexural strength and elastic modulus based on compressive strength data. The laboratory test results represent level 1 PCC material inputs. Concrete mixes with 5 different coarse aggregates were tested for these pivotal concrete strength properties at the curing age of 7, 14, 28 and 90 days, and for CTE at 28 days. This study is part of a New Mexico Department of Transportation (NMDOT) research project that focuses on the development of guidelines for characterizing Portland cement concrete (PCC) materials for paving mixes being used in New Mexico. Next we’ll walk you through the thickness design process using tools. We start with a review of concrete pavement design details and their effect on the pavement thickness design. ![]() To download just the program without the installer, click here: MnPAVE-Rigid3.exe. The second day’s workshop takes place in Edmonton and gives attendees the opportunity to kick the tires of some of today’s contemporary pavement design software. MnPAVE Rigid 3.0: rigid (PCC) pavement design Version 3.002 updated May 13, 2019. Pavement rehabilitation is needed for deficient roadways, but pavement preservation can extend. MnPAVE Flexible: flexible (HMA) pavement design. NJDOT's Pavement and Drainage Management and Technology Unit is advancing the use of Pavement Preservation treatments on the state's roads to increase safety, enhance durability, improve customer experience and minimize costs. ACPA K-value calculator: For use with BCOA-ME. ![]() ![]() Accuracy of pavement design is heavily dependent on precision of these inputs. BCOA-ME: bonded PCC overlay (whitetopping) design. The CivilWeb PCA Pavement Design Spreadsheet can be purchased further down this page for only £10. There are numerous concrete properties for which input data are required in ME design software, but with previous research, it was found that the concrete strength and thermal properties including elastic modulus, modulus of rupture and coefficient of thermal expansion (CTE) are the most important ones that affect the design and performance of rigid pavements. The unique design analysis tools allows the designer to see at a glance the optimum concrete pavement thickness for the chosen loadings and whether the critical design parameter is erosion damage or fatigue damage. Various state agencies are in the process of calibration of distress prediction models and characterization of concrete materials to provide accurate inputs required by Pavement ME design software. ICPI s Permeable Design Pro software provides Permeable Design Pro Software that integrates hydrologic and structural solutions and provides base thickness. The format of the design and performance prediction of rigid pavements was reformed with the advent of Pavement mechanistic-empirical (ME) design procedure, which now serves as the state-of-the-art tool in pavement design. The project compares the use of both software for stress analysis in rigid pavement in term of simplicity and precision.Characterization of Concrete Materials for Rigid Pavement Design in New Mexico KENSLABS and STAAD-III are both Finite Element software KENSLABS is designed specifically for concrete pavement stress analysis, therefore it is more user-frielndly for pavement design STAAD-III is more suitable for general plane and space structures. The most practical and widely used stress analysis method for flexible pavement is Burmister's Elastic Layered Theory and for analyzing rigid pavement is Finite Element Method. Hence, stress analysis has become an important role in pavement engineering. The Mechanistic-Empirical Method has two components: (1) stress, strain and deflection are calculated based on analyzing mechanical characteristics of materials (2) critical pavement distresses are quantitatively predicted by experimental calibrated equations. Pavement engineering has gone through major developments the transition from Empirical Design Method to Mechanistic-Empirical Methods is becoming a near-future trend. Thanks to this software, the user who wants to design the concrete pavement as concrete road slab can obtain the essential parameters automatically by entering. Different approaches are usually taken when designing flexible and rigid pavement: the rigid concrete slab carries major portion of the traffic load while for flexible pavement, external loads are distributed to the subgrade because of the relatively low modulus of elasticity of asphalt layer comparing to concrete in the case of rigid pavement.
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