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<br /> FLEXOTOPTM ECO SUB-BASES 4/2020<br /> Sub-bases<br /> FLEXOTOPTM ECO may be installed on both bound and unbound sub-bases. However, specific<br /> requirements apply in both cases to avoid drainage problems or permanent deformation.<br /> The requirements for the various sub-base types that may be used are detailed below.<br /> Crushed stones<br /> Generally speaking, the whole area of the base must be 100% self-draining and the base<br /> compressed to prevent any further settlement. The base consists of a compacted structural<br /> layer (min 35 MPa) with crushed stones 0 – 32 mm in 200 mm thickness and crushed stones of<br /> 0 – 4 mm fraction in 20 mm. This structural layer is laid on compacted soil (min 25 MPa). (The<br /> depth depends on area where sub base is made, in area with ground water and severe frost<br /> subbase must be thicker)<br /> The following materials are unsuitable and would not be fit for purpose: slag, clay, r<a title="Flexotop - sub- bases 4_2020 NEW page 1" href="https://secure.viewer.zmags.com/publication/4654c32c?page=1"> FLEXOTOPTM ECO SUB-BASES </a> <a title="Flexotop - sub- bases 4_2020 NEW page 2" href="https://secure.viewer.zmags.com/publication/4654c32c?page=2"> Concrete and Asphalt Installing FLEXOTOPTM ECO o</a> <a title="Flexotop - sub- bases 4_2020 NEW page 3" href="https://secure.viewer.zmags.com/publication/4654c32c?page=3"> We fully recommend finishing FLEXOBASE on the 45°</a>