At The Conco Companies, our portfolio includes a wide variety of projects that have required the use of various concrete mixes to meet their unique specifications. For projects that require extremely durable and/or high-strength concrete, High-performance Concrete (HPC) is used.
HPC is defined by the American Concrete Institute (ACI) as “meeting special combinations of performance and uniformity requirements that cannot always be achieved routinely using conventional constituents and normal mixing, placing, and curing practices.” The design mix of HPC basically contains the same materials as conventional concrete with the difference being the proportion of the materials added to provide the needed strength and durability.
The ACI explains that HPC has a specified compressive strength of 8000 psi (55 MPa) or greater. They add that, “The value of 8000 psi (55 MPa) was selected because it represented a strength level at which special care is required for production and testing of the concrete and at which special structural design requirements may be needed.” In addition to strength requirements, HPC is used in projects that face tough environmental conditions. To achieve a project’s specifications, HPC uses other materials along with the cement such as flyash, ground blast furnace slag or microsilica fume.
The characteristics of HPC include low shrinkage, low permeability, a high modulus of elasticity, and high strength. However not all high-strength concrete is high-performance. The HPC used in the construction of bridge decks and highways must contain properties such as high density, low permeability and resistance to environmental conditions. Other projects that benefit from HPC are the columns used in high-rises, especially the ones on the lower floors that will bear the greatest load, shear walls and foundations.
Please visit Conco’s website to see some of our impressive projects we have had the honor to be a part of. Also while you are there, take a look at the wide range of premium concrete services we offer.
The Conco Companies are a leading supplier of concrete services for the Western U.S. We got our start in the Bay Area in 1959 by offering clients the best value on a wide range of concrete services and products. Since that time, we have taken a leading role as one of the top concrete contractors in the region. We have four regional offices serving California, Nevada, Washington, Oregon and Colorado.
The Conco Companies initially started out as a concrete contractor but as our business expanded over the years, we have evolved into a full service provider to the construction industry. We now provide a range of “concrete solutions” to our customers as opposed to “concrete services,” and we have the resources and expertise to oversee the entire process.
The range of services we provide include rebar fabrication and installation, concrete pumping, formwork, shotcrete, cellular concrete, trucking, design/build, general contracting and turnkey solutions. By providing such a broad array of comprehensive solutions, it creates value to all those involved in the project and has given us many loyal customers.
For many projects, we believe that design/build creates the best value for our client. When Conco has early input into the design process, it typically allows us to create a better finished product and at a lower cost. This is due to the fact that we have experience with multiple means and methods for constructing similar structures and understand their unique advantages and disadvantages. We also work with engineers that value our input and factor in constructability issues into their design process. Moreover given our decades in the industry, we have extensive local knowledge of the market and understand the capabilities of suppliers and costs associated with various alternatives.
Another advantage to working with Conco is we are one of the few concrete contractors on the West Coast that services both concrete and rebar. This means there is no need for schedule coordination as we control the whole process, which results in less work stoppages and delays. Please visit our website to learn more about the professional concrete solutions offered by Conco.
The Conco Companies are a leading supplier of concrete services for the Western U.S and we got our start in the Bay Area in 1959. Our success has come from offering clients the best value on a wide range of concrete services and products and we are now one of the region’s top commercial concrete contractors. We serve California, Oregon, Washington Colorado, and Nevada.