The following report was compiled by Golder Associates Ltd. Golder Associates are a multinational engineering firm which operates in eight countries in North America, Europe and Australia. Golder Associates amongst other fields, specialize in roads, highways and bridges. They are leading experts in surface consulting, design, planning and testing. The following are excerpts pertaining to material and production methods testing and subsequent results and conclusions with respect to concrete raising and leveling. “Re: Draft Specification Leveling of Flat Slabs” “This specification covers the requirements for the leveling of flat slabs on grade such as sidewalks. The purpose is…to restore proper surface grades where post-construction movement of slabs have resulted in excessive deformation.” “The material used shall have a compressive strength of at least 0.7 megapascals at seven days.” Levelcrete meets or exceeds that standard. “If higher strength mixes are required, the use of up to 10% cement is suggested”. “The placement (pumping) of the material shall be carried out in a manner such that the slab(s) are raised and realigned to the proper grade and essentially confirm that at least 80 percent of all voids below the slab are filled.” Level Corp fills in excess of 97% of all voids. “The material specified…should include Type 10 Portland cement, inorganic aggregate and water. Organic material (clay, topsoil) should not be used since these materials are both degradable and very highly frost susceptible.” The above quoted report and specifications were assessed and compiled by: Philip R.
Bedell, P. Eng.
In consideration of such specification, in particular the usage of aggregates only (no organic compounds (clay, topsoil), it becomes clear why Level Corp delivers long term solutions to uneven concrete slabs. Organic materials, being “degradable and frost susceptible”, obviously present a real possibility that raising and leveling will have to be repeated on a regular basis (1 – 2 years). Needless to say it is more expensive, inconvenient and unsafe, as slabs shift on a consistent basis. Level Corp believes that we are the only multi-market operator who have reviewed, tested and received appropriate specification and subsequent recommendation for the process and material required in concrete raising and leveling. In an industry which lacks standards and regulations, Level Corp is the industry leader in helping elevate the process to a new level of professional standards and practices. At Level Corp it is not our intent, nor was it in the past, to re-invent the proverbial wheel. Our purpose, however, was to create the safest, longest lasting, and most comfortable wheel on the market at current, competitive prices. As our process and material were in fact tested, we believe that it is one element of our product and service which sets us apart from others without any doubt.
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