Using Mineral Fines to Reduce Cement without Compromising Quality
Presented By: John Guynn
Affiliation: Roman Cement
Description: Roman Cement uses a patented technology that permits a re-design of a standard concrete mix — driving concrete performance up, and material cost down…all while making concrete better for the world’s economy and environment.
The patented technology improves cement hydration efficiency, reduces excess capillary water, and increases particle packing density of the entire system (aggregates and cement paste) throughout the structure of the concrete product.
The City of Salt Lake used the patented Roman Cement technology to re-design their standard concrete mix to be used for their Electric Bus Charging Station project. The Roman Cement re-design enabled the City of Salt Lake to reduce the use of cement (and therefore the carbon footprint and overall material cost) as compared to their standard and historical mix design. The redesign also improved strength, workability, performance, and durability of the concrete.
The Project was completed in 2022 and still looks beautiful today without any cracking, spalling or other observable defect, unlike some of the portions where the original standard mix was used.
Honoring Service in Concrete: The California Firefighters Memorial
Presented By: Adam Thompson
Affiliation: Trademark Concrete
Description: A brief overview into how a high-profile public memorial transitioned from stone to decorative concrete. Learn how collaboration and value engineering brought design intent to life, blending flatwork and vertical elements into a seamless tribute.
Repair and Restoration of Puerto Rico Capitol Building Domes
Presented By: Jose IZQUIERDO ENCARNACIoN
Affiliation:
Description: Diagnosis of the problem – Cases will be discussed to emphasize the importance of being able to diagnose the origin of the deterioration of concrete structures.
• Recommended studies – Presentation of different available tests (destructive and non-destructive) and their benefits and uses.
• Quality Processes – Importance of verifying the repairs carried out, to guarantee the owner the repair.
• Repair: Evaluation and repair of the Capitol Dome – Studies, tests and recommendations for repairing the concrete domes of the Capitol, novel techniques, injections, installations of Terracotta ornamentation.
Altamura Residence
Presented By: Nicholas Nikiforuk
Affiliation: Integraspec
Description: A complete concrete ICF structure that is non combustible, earthquake proof, hurricane proof, termite proof, mold proof and zero net. Insulated concrete walls, floors and roof.
Satsukita 8.1
Presented By: Satoshi Tatsuno
Affiliation: Taisei Corporation
Description: Satsukita 8.1 is the tallest skyscraper in Hokkaido with 48 floors and a height of about 175 m (575 ft).The high-rise houses were constructed of reinforced concrete to ensure habitability during strong winds and earthquakes.
Hokkaido has a lot of snow, so construction work is restricted in winter. To shorten the construction period, it was necessary to use precast members for the entire building.
The construction method of this building was an RC layered construction method, and all columns on the first basement floor or higher were fully precast members. Beams, slabs, balconies, and corridors on the second floor and above were made of half-precast members. About 65% of the concrete is precast members.
We have developed a hinge relocation method, which is our original structural design technology, and applied it to a skyscraper for the first time.
By adopting this construction method, even in the event of a large earthquake, damage to the beam-column joints can be suppressed, so that the performance of the structural frame is improved.
In addition, the feature of this hinge relocation method is that a mechanical re-bar joint can be installed at the end of the girder near the column surface, so that the precast column with the beam-column joint and the precast girder can be separated.
By standardizing the cross-section of precast members, it became possible to reuse steel formwork multiple times for precast members made at the factory, and the total amount of formwork was reduced. In addition, we contributed to reducing the environmental impact by using concrete materials from Hokkaido as much as possible and manufacturing precast materials at a factory near the construction site and transporting them to the site.
Rooted in the Land, Concrete as a Reflection of Place
Presented By: Andrew Lavey
Affiliation:
Description: Set against the stunning backdrop of the San Gabriel Mountains, discover how the Hope Plaza team thoughtfully designed, engineered, and built this eight-story outpatient cancer center. Drawing inspiration from the natural surroundings, they created a tranquil and hopeful space—seamlessly blending structural and architectural concrete to serve as both a functional and artistic centerpiece.
Chairman
Presented By: Tsueyshya Wu
Affiliation: FENGYU Group
Description:
An Apron Project Covering 420,000 Square Meters at Taiwan Taoyuan International Airport
Presented By: Wei-Liang Yang
Affiliation: CECI
Description: Taoyuan International Airport in Taiwan is now building a third terminal having a service capacity of 45M passengers to accommodate an increasing amount of air traffic and provide for a more comfortable airport experience when traveling abroad and welcoming international passengers. Throughout the duration of this huge undertaking, the Owner and its counterparts have been implementing numerous engineering projects dedicated to world-class standards and fine local craftsmanship. Among them, the airside apron project was singled out to be one of its fast-track projects and was able to withstand the difficult Covid19 epidemic period without affecting progress. Consequently, 19 of the 27 parking aprons have now been completed and put into operation.
The project featured a number of construction constraints such as having to work in the existing airside space and maintain air traffic control and connections with the existing aprons without any interruptions, and still managed not to compromise on the quality and safety of the project. Whether it is the leveling and drainage of the concrete slabs, crack prevention of joints, wind and temperature control of a large area, and the integration of various apron facilities, we were able to overcome all of these obstacles by adopting innovative practices and paying heed to meticulous details; It truly is an honor and privilege to recognized by the ACI for our efforts.
The Ayer: Meeting the Challenges of Tall Building Design
Presented By: Joe Ferzli
Affiliation: CKC
Description: The Ayer is a 45-story cast-in-place concrete residential tower adding a distinct geometric presence to Seattle’s skyline. Its structure features long-span 8-inch post-tensioned slabs and a concentric shear wall core designed using Performance-Based Design. The project stands out through constructability-driven solutions, including vertically aligned columns that eliminated all transfer beams and the innovative use of Steel Fiber Reinforced Concrete (SFRC) coupling beams in lieu of diagonally reinforced beams, simplifying construction while maintaining seismic performance. Sustainability was central to The Ayer’s approach: high-strength concrete and rebar reduced material quantities, while Portland Limestone Cement helped cut more than 450 tons of embodied CO2. Through advanced materials, thoughtful collaboration, and leading-edge structural solutions, The Ayer sets a new benchmark in efficient high-rise concrete construction.
SPARK Projects – Leveraging Innovative Concrete Technologies for Sustainable Projects Execution
Presented By: Ali Nuaimi
Affiliation: SPARK Projects
Description: A short walkthrough of SPARK Projects’ exceptional concrete construction with the with the implementation of innovative execution technologies utilizing sustainable green concrete materials.