Concrete plays a critical role in building the communities in which we live and work. Therefore, we have a responsibility to consider sustainability as we construct our built environment, and to protect it from the disruptive threats we are now facing. During this session, we will explore the many sustainability challenges affecting concrete pavements. This session will be of interest to owners, consultants, contractors, and manufacturers.
(1) Identify the critical factors required for a long-life pavement, and how they relate to sustainable concrete pavements;
(2) Explain the connection between sustainable development and concrete materials;
(3) Recognize the impact of design on long-term performance, resource efficiency and emissions;
(4) Define resiliency and vulnerability, and understand the critical factors needed to protect our communities from disruptive threats.
This session has been approved by AIA and ICC for 2 PDHs (0.2 CEUs). Please note: You must attend the live session for the entire duration to receive credit. On-demand sessions do not qualify for PDH/CEU credit.
Long-Life Concrete Pavement Considerations
Presented By: Thomas Van Dam
Affiliation: Nichols Consulting Engineers
Description: This talk will discuss how increased pavement design life is a critical element of sustainability, as longevity reduces life cycle economic, environmental, and societal impacts. The talk will introduce the concept of long-life concrete pavements, focusing on durable materials, elements of design, and construction practices that contribute to longevity. It will also discuss economic, environmental, and societal benefits derived from longevity due to a reduction in future maintenance and rehabilitation activities, resulting in broad sustainability benefits.
Role of Materials in Sustainable Concrete Pavement Construction
Presented By: Peter Taylor
Affiliation: National Concrete Pavement Technology Center
Description: Careful selection of mixture ingredients and their proportions can have a significant effect on reducing environmental impact and cost of a concrete mixture, while maintaining or improving engineering properties. This session will discuss how to think about choosing the right materials and mixture proportions for a given situation.
Improving Long-Term Performance and Resource Efficiency, Using Optimized Concrete Pavement Designs
Presented By: Sherry Sullivan
Affiliation: FORTA Corporation
Description: The evolution of concrete pavement design has progressed significantly in recent years, more specifically with the advent of mechanistic-empirical (ME) pavement design methods. These more sophisticated design methods highlight the importance of considering all factors that influence the performance of a concrete pavement holistically. Including loading, thickness, joint spacing, joint stability, subgrade support, humidity and ambient effects, flexural strength, edge support, etc. - they cannot be designed independently. This session will discuss the evolution of pavement design and how it has impacted resource efficiency, long-term performance, and the overall sustainability of concrete pavements.
Lowering Vehicle Fuel Consumption and Emissions Through Better Pavement Design and Maintenance
Presented By: Brian Killingsworth
Affiliation: National Ready Mixed Concrete Association
Description: Pavement-vehicle interaction and excess fuel consumption influence the fuel economy of a pavement network. Pavement-vehicle interaction (PVI) describes the interaction between a vehicle’s tires and the roadway surface it is driving on. The interaction is also known as “rolling resistance.” Traffic patterns and the road’s surface condition and structural properties determine the significance of PVI, which leads to excess fuel consumption (EFC) – wasted fuel consumption beyond what is required to move a vehicle. PVI factors include roughness, which refers to how bumpy or smooth a road is; texture, the abrasiveness of the road surface; and deflection, the bending of a pavement under the weight of a vehicle. Excess fuel consumption contributes to smog and greenhouse gas emissions, and costs drivers, states, and municipalities money. Research by MIT has been conducted to assess how pavement maintenance and rehabilitation activities can reduce environmental impact of a pavement network. Incorporating EFC due to PVI in pavement management systems provides a new way for agencies to maximize the performance of their pavement systems while minimizing costs and environmental impacts.
Improving a Pavements' Resiliency to Disruptive Threats
Presented By: James Mack
Description: Future climate conditions are not going to resemble the past. Temperatures are going to get hotter, and storms are going to get stronger. However, pavements are still being designed assuming that past conditions are going to resemble the future. This is a poor assumption. Furthermore, when climate change and pavement resiliency are discussed, people often focus on the immediate and local impacts of the natural disaster, such as a washout during flooding. While this is important, one also needs to recognize that pavement damage can occur at over a broad area and over a long timeframe.
This presentation will expand on this concept. It will cover the need for the resiliency; define a resiliency framework to account for both initial and long-term impacts; and finally, it will provide some approaches to mitigate pavement damage using concrete and cement based products.