Soil Stabilization and Manhole Rehabilitation

Soil Stabilization Services

Deep Foamjection™ is the process of installing foam deep within the earth, to increase the load-bearing capacity of the soils. This is recommended when a builder wants to reduce any impact on a structure due to soil settlement, or to repair unstable soil around a structure. Foam is used to fill voids holding water and to bind weak soil areas. We use HMI Soil Binder/Stabilizer (RR600), a resin used for saturation into the ground that when cured, will bind and stabilize loose soils. This produces a solid column amid loose soils. Points of cured soil binder can offer support to a concrete slab, like legs on a table. Commonly installed in sandy or wet environments, installing columns of soil binder can offer additional support to slabs that have been lifted. It can also be installed prior to pour a slab to prevent settlement.

Manhole Rehabilitation Services – Working with the Municipalities of BC’s Central Interior

Accurate Concrete Services provides specialized restorative services to prolong the life of functioning manholes. We apply SewperCoat® cementitious material in all our manhole rehabilitation projects – this is a 3 in 1 solution – to provide:

  • Structural Enhancement
  • Corrosion Barriers
  • Infiltration Prevention
  • A unique, proven, and efficient repair strategy
  • Able to resist the most severe biogenic corrosion conditions
  • Induces a “bacterio-static effect” which inhibits the acid generation at the source
  • More than 25 years of outstanding field performance
  • Ultimately, SewperCoat® provides a unique and long-lasting solution to sewer owners
  • Beyond its outstanding resistance to biogenic corrosion, SewperCoat® bonds well to moist surfaces, it is not sensitive to pin holes, and it provides rock solid structural rehabilitation within a few hours.

SewperCoat: 10 Key Benefits in A Single Product:

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Outstanding Biogenic Corrosion Resistance

Thanks to its 100% calcium aluminate nature, SewperCoat® induces a “bacterio-static effect” inhibiting the acid generation at the source. Because it cuts down the acid, outstanding biogenic corrosion resistance is achieved.

Easy Monolithic Installation

SewperCoat® being a cementitious mortar, it is mixed, pumped and sprayed using conventional equipment. Once the substrate is well prepared, a single monolithic layer is applied in one go. No primer, no multi-layer system, no glass wire mesh, only a smooth layer of high-performance mortar that will turn hard within a few hours.

Readily adheres to damp concrete surfaces… it can be applied in a live sewer environment

SewperCoat® loves water! Good news, as sewers are quite damp places… Some inert liners require a dry surface to bond, calling for a tricky, time consuming and costly drying process. Conversely, because it is based on calcium aluminate cement, SewperCoat® needs water to hydrate, and will develop strong adhesion to damp concrete substrates. This enables installation in a live sewer.

Rapid return to service… in as quick as 30 minutes if needed

SewperCoat® normally starts to harden in 6 to 8 hours and reaches over 40 MPa within 24 hours. When live sewer conditions might constrain the time available, it is possible to accelerate SewperCoat® to get surface hardening in as quick as 30 minutes. This a very unique and valuable feature to avoid by-pass costs in most projects.

Restores Structural Integrity

SewperCoat® is a cementitious mortar made with high quality synthetic aggregates. It develops compressive strength in excess of 40 MPa within 24 hours. Thus, it can be utilized to replace corroded concrete and rebuild the original profile – thereby restoring the integral structural integrity. Trying to restore the profile with a conventional mortar – and then waiting days for curing before applying a protection layer – involves doing 2 underground interventions. In most situations, doing everything at once by applying a single layer of SewperCoat® will end-up as a simpler, faster and less costly solution.

A Rock Solid Barrier to Infiltration

SewperCoat® is a high-quality cementitious mortar which reaches over 40 MPa within the first day. As such, it provides a rock-solid barrier that will prevent any further infiltration through the surface covered.

High Abrasion Resistance

Another side benefit of SewperCoat® is its high abrasion resistance. Because of the exceptional hardness of its 100% calcium aluminate synthetic aggregates, SewperCoat® exhibits high abrasion resistance that may be of value when sewer flow is heavily loaded with sand or other abrasive sediments.

Without Volatile Organic Compounds

Biogenic corroded sewers are by definition confined spaces, and this imposes additional constraints for rehabilitation. Organic polymers like epoxy release volatile organic compounds when they are mixed and applied. These compounds have been found to be are harmful and this can be an issue when dealing in the confined space of a sewer. SewperCoat® is a 100% calcium aluminate cementitious mortar which hardens during the hydration of the cement. As such, it does not contain volatile compounds, making its use simpler and safer.

Economical to apply, and cost effective in the long run

SewperCoat® is mixed, pumped and sprayed with conventional construction equipment. It is applied quickly in a single operation, in less than 2 hours for a typical manhole. After, it will provide decades of outstanding durability – protection for generations – making it the preferred investment for any municipality.

Makes Sense for Sustainable Development

A feature of Sustainable Development is the rational use of raw materials. Because SewperCoat® provides an outstanding resistance to biogenic corrosion, with the potential for decades of reliable service-life, it fits well with municipalities working towards sustainable development goals.

We offer a 10-year warranty on our product and professional installation services. Call us for your estimate today.