Case Study: Ajax Paving achieves stringless, millimeter‑accurate paving and early project completion with Trimble Paving Control System

Ajax Paving Goes Completely Stringless Paving with Trimble Paving Control System on Concrete Pavers

Ajax Paving, founded in Detroit in 1951, is a leading concrete and asphalt contractor that was hired for major jobs including a $200M, 7,000-foot runway at Detroit Metro Airport and a 7-mile reconstruction of I-96. Faced with tight tolerances, high production demands and the inefficiencies of traditional stringline workflows, the company sought an automated, stringless paving solution to improve accuracy, speed and material yield.

Ajax implemented the Trimble Paving Control System (PCS900 3D, PCS400, Trimble Business Center - HCE and SPS930 total station) across its concrete fleet. The result: stringless runway paving to within 1 mm tolerance, continuous paving over four months with 253 truckloads/day, placement of 850,000 tons of base and 85,000 lineal feet of material, and completion of the I-96 work in 167 days—17 days early—while reducing material waste, labor for stringline setting and earning early-completion bonuses.

Ajax Paving

Jeff Robinson

Automation Manager