Videos & Webinars

Join Bob Nussmeier, Vice President of Strategic Clients at Baker Construction, as he explores how collective action can drive sustainability forward, ensuring a better future for our communities. In this presentation, he journeys through Baker's legacy from its humble beginnings in 1968 to becoming the nation's largest concrete contractor, driven by innovation and excellence. Nussmeier delves into the importance of sustainability in construction, highlighting our shared responsibility to reduce carbon emissions and adopt greener building practices.

Heidelberg Materials aims to be the industry leader on the path to low carbon, net zero concrete. As a major concrete, aggregate and cementitious materials supplier, Heidelberg Materials is an important stakeholder for achieving more sustainable concrete. This presentation will outline key facets of our sustainability roadmap, which details our commitment to achieve net zero concrete by 2050. Heidelberg Materials is committing to a transparent approach throughout this process. The roadmap of our journey includes the use of innovative products and technologies and carbon capture utilization and storage, as well as inputs from the circular economy, to reach our ambitious goals. Join Larry Rowland, Sustainability Market Manager at Heidelberg North America, as he explains Heidelberg Material’s sustainability journey.

Carbon neutrality is an essential part of sustainable concrete construction. Sustainability in the use of concrete structures is realized by the application of performance-based sustainability design. Regarding carbon reduction towards carbon neutrality, an appropriate transition design is indispensable as there is no magic. The essence of de-carbon neutral turmoil is clarified on the basis of a transition design.

Concrete materials and mixture proportions are changing to reduce the global warming potential (GWP) associated with concrete production. To reduce the GWP of concrete the industry is moving to replace cement clinker with supplementary cementitious materials (SCM, e.g., natural pozzolans, recycled glass, industrial by-products, or carbonated cement fines) that are emerging to reduce the GWP of concrete mixtures. This presentation will discuss the need for accurate quantification of the reactivity of these materials. Calculation of the environmental product declaration (EPD) of concrete will be discussed along with the shortcomings of using this approach.

The results of a low-carbon concrete tilt-up wall panel demonstration project will be presented that evaluated three concrete mixtures: a base level Type IL (Mix#1), the Type IL with 25% replacement with slag cement (Mix #2), and an ASTM C1157 cement with less than 5% portland cement (Mix#3). Extensive laboratory testing determined the bleed rate, initial and final set, compressive strength, splitting tensile strength, modulus of elasticity, and drying shrinkage of the three mixtures as well as establishing maturity relationships. Considerable information was obtained through testing and in situ monitoring providing lessons on how to use concrete with significantly lower carbon even under difficult temperature conditions.

This presentation will provide a brief update on current projects being coordinated by NEU: An ACI Center of Excellence for Carbon Neutral Concrete, which was established by the American Concrete Institute to collaborate globally to drive education, awareness, and adoption of the use of carbon-neutral concrete materials and technologies. Topics will include a brief overview of NEU, the status of the NEU Validation/Verification Program, and a summary of a recent survey of suppliers of materials and technologies.