Business Details
50+ Years
experience
Trusted Cellular Concrete Contractors for Tunneling & Heavy Highway Projects
Founded in 1970, Pacific International Grout has pioneered the use of low-density cellular concrete in underground tunneling and heavy highway applications. With over 50 years of industry experience, we have completed 825 projects across North America, Japan, Colombia, the Philippines, and Australia. Our team has placed over 1.3 million lineal feet of tunnel backfill and one million cubic yards of cellular concrete, setting global standards for innovation and reliability. Recognized for finishing projects ahead of schedule, we specialize in solving complex geotechnical challenges through proprietary mixing and placement equipment.Our work includes seismic-resistant nuclear containment grout, pipeline abandonment, and load-reducing fills for critical infrastructure. Backed by letters of reference from major clients like the Metropolitan Water District and Dairyland Power, we combine technical expertise with a commitment to quality and client satisfaction.
Services
Tunnel Backfill Grouting
Pipeline Abandonment
Load Reducing Fills
Nuclear Packaging
Slipliner Backfill
Pervious Fills
Equipment Manufacturing
Details
- Year established: 1970
Highlights and features
- We pioneered cellular concrete technology for large-scale tunneling projects.
- Our team has placed over 1.3 million lineal feet of tunnel backfill globally.
- We consistently complete projects ahead of schedule with proprietary equipment.
- We serve clients across six countries with specialized nuclear and seismic applications.
- Our work is backed by reference letters from major infrastructure clients.
What people say
Completed projects ahead of schedule
Pioneering cellular concrete technology
Backed by major infrastructure clients
Proprietary equipment ensures efficiency
Global experience across six countries
Services
Tunnel Backfill Grouting
Our tunnel backfill grouting services reinforce underground infrastructure using low-density cellular concrete. We specialize in large-diameter tunnel applications, having completed over 1.3 million lineal feet of work globally. Our proprietary mixing systems ensure consistent material quality for critical projects like the Port Mann Water Supply Tunnel and New York Harbor Crossing.
Pipeline Abandonment
We provide safe, efficient pipeline abandonment solutions using cellular concrete fills. Our methods meet strict environmental regulations while ensuring structural integrity. Projects include casing backfill for pipelines in challenging environments, with experience handling over 741,026 lineal feet of small-diameter pipe installations.
Load Reducing Fills
Our load-reducing fills minimize earth pressure on underground structures using lightweight cellular concrete. This technology protects infrastructure like culverts and tunnels while reducing settlement risks. We've placed over one million cubic yards of material for highway interchanges and water supply projects.
Nuclear Packaging
We deliver specialized nuclear containment grouting solutions for reactor decommissioning and radioactive material handling. Our precise mix designs meet stringent safety standards, as demonstrated in projects like the Dairyland Power nuclear reactor fill in Wisconsin.
Equipment Manufacturing
We develop proprietary mixing and pumping equipment for cellular concrete applications. Our innovations enable high-volume placements required for major infrastructure projects, supporting industry advancements in tunneling and geotechnical construction since 1970.
People
Patrick Stephens
President
Patrick Stephens leads Pacific International Grout with decades of industry experience. He oversees global operations and strategic growth while maintaining the company's technical leadership in cellular concrete applications since joining the family-owned business.
Questions
What services does Pacific International Grout Company specialize in?
We specialize in low-density cellular concrete applications including tunnel backfill, pipeline abandonment, load-reducing fills, nuclear packaging, and seismic-resistant grouting for infrastructure projects.
Which geographic areas do you serve?
We operate across North America, Japan, Colombia, the Philippines, and Australia for large-scale tunneling and heavy highway projects.
How long has your company been in business?
We have over 50 years of experience since our founding in 1970, with 825 completed projects globally.
Can you handle complex geotechnical challenges?
Yes, we develop proprietary equipment and methods to solve technically demanding projects like seismic-resistant nuclear containment grout and large-diameter tunnel backfill.
Do you provide references for completed work?
Yes, we have reference letters from clients including the Metropolitan Water District, Dairyland Power, and Wisconsin Department of Transportation.
What makes your cellular concrete solutions unique?
We pioneered large-volume mixing and placement technology, enabling efficient execution of projects exceeding 1 million cubic yards of material.
