Infrastructure Rehabilitation

Orlando – October 16, 2026 -- A crystalline waterproofing admixture removed roughly 60 days of planned waterproofing work from the rehabilitation of the Dujmovača Tunnel in Split, Croatia, and cut water penetration depth by 83% after ten test cycles, according to Penetron Group.

Redesign followed material shortage and failed adhesion tests

The Dujmovača Tunnel (M604) is part of the Split suburban railway line and is one of two railway tunnels beneath the city center. The rehabilitation targeted waterproofing and drainage to control water ingress. The original design specified a dimpled membrane system to channel inflows through drains and half-pipes into a drainage channel.

Two problems forced a rethink. The specified composite drainage material was no longer available, and shotcrete adhesion tests returned values below the required threshold, said Theodor Mentzikofakis, Managing Director and Partner of Penetron Hellas.

Houston – – September 28, 2026 -- Vortex Companies has acquired Municipal & Contractors Sealing Products, LLC (MCSP), a Cincinnati-based trenchless infrastructure rehabilitation contractor, expanding its geotechnical and Midwest operating footprint.

MCSP brings 25 years of specialized rehabilitation expertise to Vortex's platform

Founded in 2000 by Bob O'Connor, MCSP has spent more than two decades rehabilitating municipal storm water and sanitary sewer systems across multiple U.S. states. The company specializes in geopolymer and cementitious spray lining, protective coatings, chemical grout injection, and rehabilitation of pipelines, manholes, culverts and tunnels.

Houston – September 19, 2026 -- Vortex Companies has acquired CLH & Son, Inc., an Auburn, Maine-based infrastructure contractor, expanding its self-performed rehabilitation capabilities across the Northeast United States.

CLH brings four decades of sliplining and drainage expertise to Vortex's regional platform

Founded in 1979 by Calvin Hunter and now led by CEO Travis Stearns, CLH specializes in sliplining, concrete rehabilitation, excavation and drainage improvements. The contractor has built its client base among municipalities, state departments of transportation, utilities and other contractors throughout New England, focusing on aging storm and sewer systems.