Over the years, there have been many different types of base materials used for the base of interlocking stone and natural stone projects such as driveways, walkways and patios. We recently came across a product called “Ultrabse” which is definitely the best product to be used as the base for all stone projects if you want to reduce the worry of shifting or any deformation of your newly installed stone project. By using ultrabase, you are able to increase the sustainability up to ten or more years without experiencing any shifting issues if it is installed correctly. We have provided some information below to help you better understand the benefits of using ultrabse for your next stone project.
“Ultrabase” is an industry trademarked moniker that refers to a rollable compactable conrete (RCC). It is not to be mistaken with U fill which is only a .04 MPA mix.
The RCC mix can go up to 8000 PSI and has the same basic ingredients as conventional concrete, namely cement, water, and aggregates, such as gravel or crushed stone.
Unlike conventional concrete, it’s a drier mix—stiff enough to be compacted by vibratory rollers yet flexible enough to be manipulated manually with grading rakes etc.
There are varying opinions as to the base for this product but we always recommend using the same principles as when you install a crushed aggregate base and that is to ensure the sub- base is well excavated, level and compacted before installing. In some cases you may even have to install a small quantity of clear gravel.
Compaction is the most important stage of installation of this material; it provides density, strength, smoothness, and surface texture. Compaction begins immediately after placement and continues until the pavement meets density requirements.
Curing ensures a strong and durable pavement. While you can walk on the surface immediately the total curing time for this product to achieve it’s true tensile strength with hydration is anywhere from 6-8 hours.
In essence, with RCC you get the strength and performance of conventional concrete with the economy and simplicity of crush/asphalt.