Asphalt has held the lion’s share of repair work for years. But now, pavements made of concrete prove to be more cost effective in the initial installment as well as more durable than asphalt, making them the ideal choice for repairing aging roadways. Product used is Rapid Set Cement.
The I-280 bridge hinge joints are designed to slide and rotate, providing the 6-mile-long concrete structure the flexibility and stability to withstand an earthquake. The worn-out hinges on the bridge were replaced with hinges better designed to handle seismic forces. It was planned long before the Napa earthquake, which caused no damage to the structure. Product used was Rapid Set Cement.
The U.S. Army Engineer Research and Development Center conducted four years of testing to determine the best option for rapid-setting concrete for repairs to military airfields. Product used was Rapid Set Cement.
Calcium sulfoaluminate (CSA) cement is a proven growing technology for the underground construction industry. The fast set time, high strength, low porosity, high chemical stability and sulfate resistance make it a material uniquely suited for underground repairs, shotcrete, and other applications as needed.
Special cements allow for quicker, long-lasting concrete bridge and deck repairs.
Sydney International Airport invited Volumetric Concrete Australia to perform slab replacement work on the East West Runway 25.
The sustainability of concrete, the most widely used material in the world, is still a difficult concept to quantify. However, the Product Category Rules (PCRs) for concrete are a step in the right direction. This article focuses on the sustainability of materials used in civil infrastructure such as highways and bridges, but the concepts explored are also frequently applicable to materials used for building repair.
The implementation of "sigma methodologies" evokes a sense of quality and excellence, and therefore combining the word "sigma" and concrete is a method that represents high quality concrete. This article shares six specific attributes of belitic calcium sulfoaluminate cement concrete that directly contributes to high quality.
Rapid-hardening cement concrete can be used anywhere portland cement concrete can be used, and offers the greatest advantages when used for repair or rehabilitation of highway and airport pavements, bridge decks and overlays, and other projects where time is of the essence. Product used is Rapid Set Cement.
DOTs are tasked with deploying new techniques and new products to extend pavement in timeframes that reduce traffic interruptions and lane closure times. Rapid-hardening cement helps them meet this challenge, since it sets and gains strength rapidly. Products used include Cement All, Mortar Mix, FLOW Control, Low-P Cement, and Rapid Set Cement.
Five international projects show how construction products play a supporting role in industries where new technology rollouts, tight timelines, and sustainable design are the new normal. Products used include Cement All, Concrete Mix, Rapid Set Cement, SET Control, and TRU Self-Leveling.
Belitic calcium sulfoaluminate (BCSA) cement has been around since 1975. Its hydration reaction consumes all the free water at a very early age in the creation of ettringite crystals. This means flatwork doesn’t bleed and therefore pores and capillaries are much smaller than those created in portland cement concrete by rising bleed water. The result is lower permeability and very low drying shrinkage.
Based on the proven performance of Rapid Set® Cement Concrete in heavy-use pavement applications and harsh climates, it was chosen to replace 531 Runway 16C panels. Rapid Set Cement Concrete provided a rapid-setting, high performance concrete solution engineered to provide extended service life and significant savings in repair and replacement costs at SEA-TAC for many years to come.
Volumetric Mixer produces 398 cubic yards of rapid strength concrete in just 5 hours, for panel replacement work on one of California's busiest freeways. Product used was Rapid Set Cement.
The January 17, 1994, Northridge 6.6 earthquake did immense damage to many of the region’s vital traffic arteries. One serious disruption was the closing of the I-10 Santa Monica freeway due to the collapse of two bridges. The 1-10 is the busiest freeway in the nation. C.C. Myers completely rebuilt the two bridges 74 days ahead of schedule and received a $14.5 million bonus. Products used include Rapic Set Cement, Rapid Set Flowable Fill, and SET Control.
A more sustainable alternative to portland cement for decorative concrete work is available for architects and contractors. Belitic Calcium Sulfoaluminate (BCSA) Cements have a lower carbon footprint and can typically yield additional LEED points.
300 cubic yards of concrete were successful placed in 6 hours. The freeway opened to traffic an hour after placement. Short Load produced the Rapid Set Concrete.
Project specifications for filling the trenches and holes in the upgrade of the runway lighting called for concrete to achieve compressive strength of 3,500 psi in four hours. Rapid Set Cement was used in the mix design and reached 3,500 psi in two hours, half the time specified, allowing the project to be completed sooner.
Rapid Set Cement is the Port of Seattle’s material of choice because it provides high initial strengths and a faster return to service with long-term durability. Rapid Set Cement concrete is used to perform the work overnight and the repaired sections returned to service each morning so that operations and flight schedules are not disrupted.
BCSA cement offers design and construction professionals a chance to work with a concrete mixture that does not shrink and sets quickly, reaching 4500 psi compressive strength in about one hour.
CSA cement is a proven technology for the underground construction industry. The fast set time, high strength, low porosity, high chemical stability and sulfate resistance make it a material uniquely suited for underground repairs, shotcrete and other applications as needed.
The NCDOT oversaw the full-depth panel replacement on the southern stretch of Interstate-40 in Raleigh, North Carolina. Rapid Set cement concrete was used and met the specifications of 400-psi flexural strength in two hours, in half the time.
Using the Rapid Set cement, RA Knapp was able to get 2.3 times the production in the same 8-hour time frame. The two patching projects were finished on ahead of schedule.
The window for the work to be performed was from 10:00 p.m. to 6:00 a.m. nightly. In that window, demolition, installation, and curing the concrete all had to be completed in time for the morning commute. Rapid Set Cement was the only choice to meet these strict traffic limitations and 3000 psi for opening strength was achieved.