CASE STUDY 5: |
Improvement of Chalk to Type 1 Sub-Base, Basingstoke, Hampshire |
Project Description:
Addition and mixing in of Cement to Chalk in order to achieve CBR in excess of 30% in “Environmentally Friendly” Road Construction.
Existing Ground Conditions:
The site was located in the Chalk heartlands of Hampshire, thus on a green field site. Approximately 75% of chalks can be treated using this process to achieve high CBR non-frost susceptible material as a replacement for type 1 sub-base.
Product:
The chalk was graded to the appropriate level, i.e. underside of tar macadam layers, and cement binder was mixed in-situ into the chalk sub-grade.
Benefits Accrued as a direct result of the incorporation of Envirosoil Products in the Works:
- Reduction in lorry movements disposing and importing materials.
- Elimination of the dig and dump of chalk.
- Estimated Cost Savings in the region of £30 per cu m which in this context equated to 55%.
- 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 using the public highway.
Reference: Mr. Terry Lomas, Hampshire County Council, 01962-873760
CASE STUDY 5: |
Improvement of Chalk to Type 1 Sub-Base, Basingstoke, Hampshire |
Project Description:
Addition and mixing in of Cement to Chalk in order to achieve CBR in excess of 30% in “Environmentally Friendly” Road Construction.
Existing Ground Conditions:
The site was located in the Chalk heartlands of Hampshire, thus on a green field site. Approximately 75% of chalks can be treated using this process to achieve high CBR non-frost susceptible material as a replacement for type 1 sub-base.
Product:
The chalk was graded to the appropriate level, i.e. underside of tar macadam layers, and cement binder was mixed in-situ into the chalk sub-grade.
Benefits Accrued as a direct result of the incorporation of Envirosoil Products in the Works:
- Reduction in lorry movements disposing and importing materials.
- Elimination of the dig and dump of chalk.
- Estimated Cost Savings in the region of £30 per cu m which in this context equated to 55%.
- 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 using the public highway.
Reference: Mr. Terry Lomas, Hampshire County Council, 01962-873760
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