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Buying Time on U.S. Bridge Repairs

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.

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University of Massachusetts Amazon Distribution Center

Tri-State Underlayments/Franz Floors only had four days to restore 1,200 sq ft of the existing flooring before interior framing began. For this reason, the contractor chose to use Rapid Set cement products to install the flooring, because they set quickly to produce 3,000 psi in one hour and full strength of 8,000 psi in one day. Products used include Concrete Mix, FLOW Control, SET Control, TXP Primer, TRU Self-Leveling.

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Puerto Rico International Airport Runway Repairs Returned Back to Service in Less Than Two Hours

The Puerto Rico International Airport had a yearlong maintenance program to repair the runways without having to shut them down. The maintenance crew successfully performed partial-depth concrete slab and joint repairs, and returned those repaired portions of runway back to service during a two-hour window to not disrupt scheduled flights. Products used include DOT Repair Mix, FLOW Control, and SET Control.

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Aeropuerto Internacional De Tocumen

Concrete Mix was used to level the seven concrete pads inside this airport's electrical and mechanical rooms. SET Control was used to extend the working time due to the hot temperature setting time and FLOW Control was used to enhance the flow consistency.

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Camp Pendleton, Marine Corps Air Station

The runway lights on the airfield needed to be replaced, and spec requirements required a product that would be close to 5,000 psi in a 24-48 hours. After Concrete Mix with Flow Control and Set Control showed 7,900 psi in 24 hours, the material was used in the replacement of 26 lights. By using two bags at a time, the project schedule dropped from two months down to three weeks.

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County of San Diego Central Courthouse Bus Ramp

Mortar Mix Plus (MMP) was used to level an elevated-deck bus exit ramp. Since this was a fast-track project and MMP achieves 3,500 psi in 3 hours, the contractor was able to meet the deadline.

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Salem End Road Bridge at Stearns Reservoir

Concrete repairs were made to reinforce the transverse girder under the bridge. DOT Concrete Mix and FLOW Control were used.

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Tesla Store in Bellevue

During the store remodel, workers had to perform extensive surface prep prior to the TRU installation. Cement All was used for the repairs and TRU TRU Self-Leveling with integral colors were used as the polished concrete overay. The final surface was polished to an 800 grit and sealed.

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Sullivan County Jail

The structure’s 9'x7' cells had to be pitched at 25 degrees, from 1.25-inch down to ¼-inch. Aggressive diamond grinding was used to make the surface porous. After grading, Sure-Flex epoxy was used. Mortar Mix Plus, SET Control and FLOW Control were used.

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