With ever increasing public pressure to recycle more and with recycling targets for construction and civil engineering companies being set ever higher, SMR (UK) produces a specially formulated powder additive, also called SMR (structural material for reinstatement) which, when mixed with excavated spoil removes excessive moisture, forming a stable and compactable sub-base material.
The result is a high quality recycled product which can be mixed in minutes, will outperform many traditional sub-base materials, will adhere to the trench wall, but more importantly diverts excavated spoil from landfill, creating a cost saving technical backfill.
“With landfill costs increasing, anything that prevents material going this route can only be a good thing,” explained Andy Bareham, technical support manager for SMR (UK). “To date SMR has been instrumental in successfully diverting over two million tonnes of excavated material from landfill, recycling it into a reusable material that conforms to the required standards for sub-base. Factor in additional savings such as material movements, transportation, landfill costs as well as other environmental savings, the cost of using an SMR material to transform excavated spoil into a high quality reusable product makes real economic and environmental sense.”
Making environmental sense
From April 2017, the UK landfill tax increased to a standard rate of £86.10 per tonne with an inert rate of £2.70 per tonne (and this is expected to increase again in 2018 assuming no policy change). The actual cost of non-hazardous soil disposal also varies across the country, typically costing around £20 to £50 a tonne with the cost of disposing contaminated soil being significantly higher. Transport costs further push the cost of disposing of waste material and with heavy diesel transport operators being increasingly penalised for inner city movements, reusing materials where they were excavated makes sound environmental sense.
“With sustainability high on the agenda, many of the utility companies in the UK are now turning to SMR to better utilise excavated material,” continued Bareham. “Recent projects contributing to the two million tonnes diverted from landfill milestone being reached include the Anglian Water IMR contract (Integrated maintenance and repair). Partners Clancy Docwra supplied SMR to the contract, reusing excavated material as back fill, with circa 36,000 tonnes being diverted from landfill amounting to £486,000 saved on tipping fees alone, without calculating other savings related to transportation and waiting time.”
SMR (UK) is also significantly increasing the number of locations around the UK where the technology is available to blend the SMR additive with excavated spoil, growing its national network of recycling ‘HUB’ partners. Each ‘HUB’ has the necessary mobile screeners, Batch-Mix equipment and specially formulated additive enabling them to offer their customers ready mixed and recycled sub-base from the excavated spoil.
The SMR (UK) soil stabiliser solution
The SMR soil stabiliser process involves adding a specially formulated additive to excavated spoil that contains excess moisture, transforming it into a high quality recycled and reusable sub-base replacement within minutes.
Typically around 2% of the SMR material is combined using mobile screeners and Batch‑Mix equipment and the resulting chemical reaction ultimately dries out and stabilises excess moisture for optimum compaction. Soil particles are bonded together, increasing its density and strengthening the soil by as much as 600%, results in a high quality structural reinstatement material being created which consistently outperform traditional materials such as Type1 GSB.
For more information on the SMR soil stabiliser process or to find out the benefits of joining the growing national network of recycling ‘HUB’ partners either call 01252 710772 or visit www.smruk.com