CASE STUDY 3: |
Large Housing Development, Redhill Surrey |
Project Description:
The original land use comprised light industrial, but was originally a railway sidings adjacent to the main Brighton to London line. The
Existing Ground Conditions:
Generally speaking the the site was overlain 1m deep with made ground of various types including sands, chalk, industrial ash and clinker (some mixed with granular material), and weak clays. Because of this variance, care had to be taken at during the planning phase and at site level to ensure that the appropriate binder was matched to the most suitable fill material type.
The plan was to process this made ground, the majority of which was classified as industrial non-hazardous (SNRHW), in order to produce Enviro-Cap (6F/1 substitute), Enviro-Base (Clause 804 substitute), and Enviro-Mat (a material for a designed piling platform with a minimum bearing capacity of 200kN/sq m).
Product 1:
Enviro-Mat utilised the industrial non hazardous mix of made ground through mixing ex-situ with cement binder. Plate bearing tests were employed to establish the bearing capacity of the piling mats. The specification called for 180kN/sq m. Our conformance testing yielded outputs ranging from 430 to 240kN/sq m.
Product 2:
Cement was again employed as the binder material in the production of Enviro-Cap and we recorded CBRs well in excess of the specified 15%.
Product 3:
A higher dose of cement binder achieved the requirements for non-frost susceptibility and CBRs of 30% and above, with most results measuring in excess of 50% CBR.
Benefits Accrued as a direct result of the incorporation of Envirosoil Products in the Works:
- Reduction in lorry movements disposing and importing materials, which was critical in this residential built up area with an abundance of restricted routes and traffic calming.
- Elimination of the dig and dump of industrial non-hazardous wastes
- Estimated Cost Savings in the region of £50 per cubic m on average. The savings for Enviro-Base were approximately £5 higher. This equates approximately to an 81% saving over traditional methods.
- Assured quality as a result of Envirosoil’s strict and independent testing regime.
- Reduction in risks to Health and Safety of General Public particularly as a result of the elimination of unnecessary delivery traffic passing through a large busy residential development.
Reference: Keith Edwards, George Wimpey West London, 01256-745279
CASE STUDY 3: |
Large Housing Development, Redhill Surrey |
Project Description:
The original land use comprised light industrial, but was originally a railway sidings adjacent to the main Brighton to London line. The
Existing Ground Conditions:
Generally speaking the the site was overlain 1m deep with made ground of various types including sands, chalk, industrial ash and clinker (some mixed with granular material), and weak clays. Because of this variance, care had to be taken at during the planning phase and at site level to ensure that the appropriate binder was matched to the most suitable fill material type.
The plan was to process this made ground, the majority of which was classified as industrial non-hazardous (SNRHW), in order to produce Enviro-Cap (6F/1 substitute), Enviro-Base (Clause 804 substitute), and Enviro-Mat (a material for a designed piling platform with a minimum bearing capacity of 200kN/sq m).
Product 1:
Enviro-Mat utilised the industrial non hazardous mix of made ground through mixing ex-situ with cement binder. Plate bearing tests were employed to establish the bearing capacity of the piling mats. The specification called for 180kN/sq m. Our conformance testing yielded outputs ranging from 430 to 240kN/sq m.
Product 2:
Cement was again employed as the binder material in the production of Enviro-Cap and we recorded CBRs well in excess of the specified 15%.
Product 3:
A higher dose of cement binder achieved the requirements for non-frost susceptibility and CBRs of 30% and above, with most results measuring in excess of 50% CBR.
Benefits Accrued as a direct result of the incorporation of Envirosoil Products in the Works:
- Reduction in lorry movements disposing and importing materials, which was critical in this residential built up area with an abundance of restricted routes and traffic calming.
- Elimination of the dig and dump of industrial non-hazardous wastes
- Estimated Cost Savings in the region of £50 per cubic m on average. The savings for Enviro-Base were approximately £5 higher. This equates approximately to an 81% saving over traditional methods.
- Assured quality as a result of Envirosoil’s strict and independent testing regime.
- Reduction in risks to Health and Safety of General Public particularly as a result of the elimination of unnecessary delivery traffic passing through a large busy residential development.
Reference: Keith Edwards, George Wimpey West London, 01256-745279
Return to main page
Companies
