Economical | Quiet | Long-Lasting | Safe | Fuel-Efficient | Lower Overall Maintenance | Sustainable | Lower Energy Needs

Reducing Emissions in Concrete Production

Concrete is the universal building material – from pavements and bridges to buildings, water storage tanks, counter tops, and everything in between.  The manufacture and construction of building materials produces emissions, and concrete has recently been singled out.  The reality is that emissions from cement production make up less than 1.5% of the national total, and the concrete industry in the US has been actively working to reduce emissions for many years.

Note:  Cement emissions are included within the Industry category.

Major cement producers with plants in Colorado have reduced net emissions per ton of cementitious product by 21-25% since 1990 and are utilizing renewable energy sources for up to 26% of their power consumption.  In partnership with owners and specifiers, the concrete industry in Colorado is focused on providing an even higher quality product while reducing the impact on our environment.

Join our efforts in reducing emissions by following these recommendations:


  • Use portland limestone cement (PLC), which incorporates up to 15% finely ground limestone during production, to reduce clinker factor and corresponding carbon footprint.
  • Optimize aggregate gradations to construct a more durable pavement with a reduced cement content and corresponding lower emissions impact.
  • Introduce recycled CO2 into new concrete through CO2

Reducing & Recycling

  • Eliminate minimum cement content and include performance specifications instead of prescriptive to specify properties related to increased durability.
  • Replace 20% or more of the cement with fly ash to improve concrete quality and beneficially dispose of a waste product.
  • Incorporate recycled concrete aggregate (RCA) into new concrete pavement to reduce mining, processing and transportation.


  • Build long lasting pavements to extend the time between recycling pavement and reduce construction emissions caused by frequent rehabilitation cycles.
  • Diamond grind the surface of concrete pavement to restore smoothness and extend life without the need for additional raw materials.

For additional details about the concepts described and how they are being implemented in Colorado and around the country, please refer to the resources below or contact Angela Folkestad (

MIT’s Concrete Sustainability Hub:

National Concrete Pavement Technology Center:

CO/WY ACPA Spring Updates

The Colorado/Wyoming Chapter of ACPA kicked off a busy spring on March 14th at the Annual Concrete Pavement Workshop. We work closely with our sponsors, exhibitors and industry partners to present on educational and innovative changes happening across the nation and here in Colorado and Wyoming.

This year the workshop and ACPA staff faced an additional challenge with a once in a generation “Bomb Cyclone” blizzard. As the storm approached, calls started coming in from speakers, who said their flight plans (including double- and triple-booked alternative flights) were being canceled.  Eventually, all but two out-of-state participants were grounded at home or at intermediate connection points. With the help of ACPA National staff, the out of state speakers were able to remote in and give virtual presentations.

The CO/WY ACPA staff are grateful for the flexibility of all the speakers in working through the schedule and format changes and for the persistence of workshop sponsors and exhibitors and all those who braved the storm to attend and make the 2019 Concrete Pavement Workshop a snowy success!

Concrete Day at the Capitol

On Tuesday, April 23, the CO/WY Chapter of ACPA was pleased to again partner with the Colorado Ready Mixed Concrete Association (CRMCA) and the Colorado Chapter of the American Concrete Pipe Association (ACPA) to host the 2019 Concrete Day at the Capitol.

The event took place on the southeast lawn of the Colorado State Capitol. Governor Jared Polis was in attendance to address the crowd of legislators, staff and members of the concrete industry. The message from the Governor focused on the recently signed budget allocating $300 million to transportation funding and to thank legislative staff for all their hard work during the 2019 session.

While the industry is excited to be taking steps toward funding, it is important we look ahead toward more long term, sustainable funding options as well. For more information on transportation funding be sure to follow the CO/WY ACPA on twitter (@cowyacpa) and Facebook (CO/WY Chapter – ACPA) as we promote the #FundTheFix social media campaign to raise public awareness and continue the conversation on funding Colorado’s transportation needs.

Thanks to all our members who came out to celebrate Concrete Day in Colorado!


Congratulations to the City of Boulder who received the Lifetime Pavement Recognition Award!

On May 13th,  Angela Folkestad, Executive Director of the CO/WY ACPA presented the Lifetime Pavement Recognition Award to the members of the City of Boulder’s Transportation Advisory Board (TAB) for the Mapleton Avenue project. 


The Lifetime Pavement Recognition award is a national award. “The City of Boulder, Colo., was in recognized with an award for a four-block section of Mapleton Avenue, a location of great importance to a vibrant city. Built in 1927, and with minimal maintenance since, the concrete pavement stands as an exceptional and durable example of concrete put to the test. This historic section of Mapleton Avenue has contributed to economic development, including mining camps, the discovery of gold, and the growth of the University of Colorado.

“More than 90 years later, and thanks to the forward-thinking of past Boulder city officials and engineers, Mapleton Avenue continues to serve the city well,” according to Gerald F. Voigt, ACPA president and CEO, who added, “It also serves as a reminder of the impact solid infrastructure can have on a community.”

Bomb Cyclone is No Match for the Colorado/Wyoming Chapter

Check out ACPA National’s coverage of the 2019 CO/WY ACPA Annual Concrete Pavement Workshop!

In this week’s continuing coverage of “Gold Standard” Chapter events, we’re pleased to highlight the Colorado/Wyoming Chapter’s 2019 Annual Concrete Pavement Workshop, held March 14.


The “Pi Day” theme of the annual workshop gave Angela Folkestad, Jamie Johnson and Emma Dolan the opportunity to add some humor to the day-long event, but as the day of the workshop drew closer, talk of a large-scale snowstorm moving across the region proved to be no laughing matter.

“My first thought was, ‘will it really happen?’ But, there was no way I was going to cancel just because of a snowstorm,” Angela says.  “People in Colorado know how to get around in snow, especially people in the construction industry.”  After all, big trucks and four-wheel drive vehicles are common, she adds.

As the storm approached, calls started coming in from speakers, who said their flight plans (including double- and triple-booked alternative flights) were being canceled.  Eventually, all but two out-of-state participants were grounded at home or at intermediate connection points.

That’s when Angela reached out to ACPA staff, and Jerry Voigt (one of the grounded speakers), Andy Gieraltowski, and Bill Davenport to put a plan into action.  With support from ACPA and the CP Tech Center, all the “remote” speakers were able to participate through live web-based broadcasting programs.  “I was very relieved to have ACPA helping out throughout the day,” Angela adds.

By the morning of the event, the bomb cyclone had dumped 5 to 20 inches of snow throughout the state, delivered winds gusting up to 80 mph, and dropped the  barometric pressures to historically low levels, according to 

Angela praised Melody Perkins of the Colorado DOT, who was stuck in the storm on her way home the night before.  After spending most of the night trying to get home, and then after only an hour of sleep, she presented at the workshop. Angela recognized Colorado DOT Chief Engineer Joshua Laipply for presenting at the workshop, in spite of the severe weather.  It’s also worth mentioning Colorado DOT materials engineers from around the state spent most of the day before the workshop meeting in a dark conference room after the power went out in their building.  “They didn’t want to miss their opportunity to meet while the whole group was in town,” she says.

Angela also commended the remote speakers for delivering presentations seamlessly and complimented presenters and moderators who were at the conference, noting their flexibility in adapting to time changes and jumping in where needed. 

The use of the “webinar” program to link the remote speakers wasn’t the only technology put to use during the workshop.  Two undergrads studying with Dr. Tyler Ley at Oklahoma State University, were able to attend, thanks to their arrival earlier in the week. Emily Rideout and Hailey Goodale, participated in the program and assisted with the Q&A following the presentations. They used a toll-free number where participants could text questions, a technology that led to a very robust exchange of questions and responses. “About half of the questions came through the texting program,” Angela says. 

Although the conference fell a little short of the anticipated attendance, Angela said there were more than 225 attendees.  “To have more than two-thirds of our expected attendance is really amazing,” she says, adding, “A few people were not able to attend because roads were closed in Wyoming and south of Denver.”

Throughout the day, this writer observed that Angela, Jamie, and Emma, exhibited tremendous grace under pressure.  The workshop delivered a wealth of technical information, program updates, and some hospitality and networking events, along with the Chapter’s paving awards program.  Along the way, there were plenty of “Pi” jokes, which underscored the humor and forethought that went into the workshop.  In the end, the workshop also showed that ACPA members, national and chapter staff, agency customers, and others excel through even the harshest conditions.

Click here to see more of ACPA’s “gold standard” feature coverage.