Concrete cutting. It’s what we’re known for. Back in 1957, Penhall started off with a single flat saw, and today we’re the largest concrete solutions provider in the country. We pride ourselves in our experience, expertise, and top-of-the-line equipment, so when you work with Penhall, you know you’re getting the best concrete cutting services in the industry.
Penhall operators are required to go through rigorous training before they can assist you with any of your concrete cutting needs. After both in-class and field instruction, operator candidates move on to our Mentor Program, where they study under the tutelage of some of the most skilled and experienced people in concrete construction. Before being sent out to you, our operators are tested and interviewed to make sure that they have the knowledge to provide you with the best services around.
When your Penhall operator arrives on the site, you’ll find that you’ve just gained a trusted partner who will assuredly add value to your project. Whether it’s a quick couple of cuts or you’re cutting up a whole parking lot, your Penhall operator is always prepared. Our trucks come fully equipped with everything needed to ensure the job gets done right. Operators always have a range of blades in a multitude of sizes and can provide their own water, power, and slurry removal if need be.
Types of Concrete Cutting
Flat sawing (also called slab sawing) is a process that cuts the upper portion of existing concrete to an even, flat plane. The procedure can be used to level out damaged pavement, provide control joints, or lay underground wires and pipes. Penhall uses saws equipped with a diamond blade to cut horizontal, flat concrete and asphalt surfaces to any depth up to 24 inches.
Whether it’s an indoor slab sawing project, requiring an electric-powered flat saw, or an outdoor job needing the higher power offered by a gasoline or diesel engine, Penhall’s dedicated team of flat saw operators have the capabilities to meet your needs.
Typical flat sawing projects include highway patching, plumbing trenches, runway repair, structural foundations, parking lot re-pavement, residential and commercial enhancements, access and repair of broken water pipe or sewer lines.
Penhall’s flat sawing equipment and efficient operation assures a quick setup and minimal disruption to other projects.
- Flat saw hp output (determined by our fleet and needs and scope of project) supports optimum diamond blade speeds for a quality, efficient cut.
- Penhall crew provides tanker for water-cooling if running source is unavailable.
- Penhall team contains slurry by-product from the mixture of cooling water and concrete dust to ensure a clean job site.
Penhall commonly uses concrete wall sawing methods to make precise cuts in vertical or horizontal concrete slabs. Common applications include: creating wall and doorway openings, tunnel and dam work, bridge modifications and industrial silo openings. Additional applications for wall cutting are for ventilation purposes, like creating new windows and HVAC openings.
Concrete wall cutting requires specialized equipment and expertise. In stark contrast to other removal techniques, wall sawing uses low vibration, which minimizes collateral damage when removing concrete from an existing structure. Penhall uses track-mounted wall cutting saws to ensure straight cuts and professional results. When your concrete structure needs new openings, turn to the professionals at Penhall for the fastest, most cost effective wall sawing solutions on the market.
Penhall’s wall saws:
- Can be operated remotely
- Are configured for almost any angle to aid in the extraction of waste slabs
- Make very precise cuts up to 33 inches deep without over-cuts
A hand held saw with a diamond blade gives greater flexibility and options to complete projects with restricted access. The hand saw can be powered by a gas engine, electric, or hydraulic depending upon the specific needs and scope of the project.
Examples of hand saw work include:
- A Hand saw was used to cut 5, 4ft. by 4ft. new footing openings in a concrete slab due to the confined space and no access for a flat saw.
- Saw cut 24 window openings for a new ride at Disneyland. A crew of three diamond operators worked overnight to complete the work on schedule. All slurry was vacuumed and concrete debris hauled off site.
- We used a gas hand saw with a 16in. diamond blade to score cut the existing bridge deck for a bridge widening project on the 91 freeway
- Used a gas hand saw with ‘Carborundum’ blade to cut existing rebar extruding from existing footings on the 110 freeway
- Used an electric saw with 12in. diamond blade to saw cut a trench in a homeowners garage to relocate gas lines
Wire cutting allows Penhall to saw through material in confined spaces and through very complex structures. These structures may be too large or awkward for traditional saw cutting.
Penhall offers core drilling (concrete coring) and has done so for many years. Whether you need to make an opening for a manhole, install plumbing or electrical lines, or to pull a sample of concrete for testing, quality cores are a must.
Penhall is a leading provider of asphalt cutting services for industrial, commercial or residential projects. We have been in the business for over 50 years, and we have the equipment required to handle even the most challenging projects. We employ state-of-the-art equipment and a highly trained staff to vastly reduce the time and cost required for this type of project. Enjoy the benefits of our dedicated professional staff, who are known for taking pride in their work, and delivering the best results in the industry. Types of work we specialize in include:
- asphalt road cutting
- asphalt over concrete
- parking lot cutting (fresh asphalt or cracked & broken)
Our versatile, highly-skilled team has the equipment and know-how to provide concrete breaking and removal services. Penhall employees undergo intensive, specialized training that complies with local and federal safety requirements for concrete breaking services, as well as additional safe haul-away training.
From concrete and highway demolition projects, to a full range of building demolition services, Penhall is your one stop solution for safe, scalable demolition services.
How Concrete is Cut
Hardness of Concrete
Concrete is made up of cement and crushed rocks, stones and sand. The cement is made up of limestone and other minerals, which act as a binding agent when combined with water. The crushed rocks, stones and sand in the concrete are called aggregates, which are held in place by the cement and help give the concrete strength and act as an extender in order to use less cement. Since concrete and asphalt are fairly hard substances, we need something even harder on the Mohs Scale of Mineral Hardness to cut it, which is where diamonds come in.
Why Use Diamond Blades?
Diamond blades have been around since the mid-1930s and were originally for lapidary use. By the time Penhall came on to the scene, the blades had evolved to be used for concrete cutting as well. While the first diamond blades, developed by pharmacist Richard Felker, used natural diamonds, modern concrete saw blades use synthetic diamonds that are specially engineered to most effectively cut specific aggregates within the concrete. Aggregates vary from region to region and state-to-state based on what kind of minerals and rocks are available in the area to use in the concrete mix. As there could be many different aggregate mixes with just as many differences in hardness throughout a single state, Penhall has a wide range of diamond blades to make sure that wherever you are and whatever aggregate is in your area, we’re cutting safely and effectively while optimizing production rates.
In general, diamond blades are made up of three major components: diamonds, metal binding powder, and a steel saw core. Tiny diamond crystals are combined with a metal powder mixture that often consists of metallic elements such as tin, iron, copper, cobalt, nickel, silver and others. This mixture is then pressed in to the “diamond segment” which is welded on to the steel core. Once all of the diamond segments have been welded on, other than some last minute adjustments, the diamond blade is ready to go.
How Diamond Blades Cut
Even though it’s called concrete cutting, the process itself is actually grinding. The diamonds set into concrete saw blades create an abrasive surface, which is what grinds away at the concrete at high speeds. You don’t sharpen a diamond blade as you would another type of cutting utensil. As the blade itself gets worn down, new diamonds get exposed, which allows for continual use. The type of aggregate your cutting can affect your production rates, but don’t worry, Penhall has the right equipment for any type of job.