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EVS-EN 14679:2026
Execution of special geotechnical works - In-Situ Soil Mixing
Scope: This document specifies general principles for the execution, supervision, inspection, testing, monitoring and maintenance of in situ soil mixing works (Deep Mixing) carried out by two different methods: dry mixing and wet mixing.
Soil mixing considered in this document is limited to methods which involve:
- mixing by rotating mechanical mixing tools, including jetting and/or compressed air assistance, where the lateral support provided by the surrounding ground is not removed;
- different shapes and configurations of soilmix elements, either columns, panels, walls or any combination of more than one single element, with or without overlapping;
- treatment of soils and fills, including brownfields, sludges, etc., with possible limited penetration into the rock;
- mass mixing;
- environmental mixing, involving installation of containment and permeable reactive barriers and solidification/stabilization of contaminated soils and sludges.
This document does not apply to shallow soil stabilization, which consists of granulating the surface soil and mixing it with binder using stabilizing machines to improve performance. Shallow soil stabilization is in the scope of EN 16907-4.
Soil mixing considered in this document is limited to methods which involve:
- mixing by rotating mechanical mixing tools, including jetting and/or compressed air assistance, where the lateral support provided by the surrounding ground is not removed;
- different shapes and configurations of soilmix elements, either columns, panels, walls or any combination of more than one single element, with or without overlapping;
- treatment of soils and fills, including brownfields, sludges, etc., with possible limited penetration into the rock;
- mass mixing;
- environmental mixing, involving installation of containment and permeable reactive barriers and solidification/stabilization of contaminated soils and sludges.
This document does not apply to shallow soil stabilization, which consists of granulating the surface soil and mixing it with binder using stabilizing machines to improve performance. Shallow soil stabilization is in the scope of EN 16907-4.
Base documents: EN 14679:2026
Replaces: EVS-EN 14679:2005
Replaced standards
EVS-EN 14679:2005
Execution of special geotechnical works - Deep mixing
Scope: This document specifies general principles for the execution, testing, supervision and monitoring of deep
mixing works carried out by two different methods: dry mixing and wet mixing.
Deep mixing considered in this document is limited to methods, which involve:
a) mixing by rotating mechanical mixing tools (see Annex A, Figure A.1) where the lateral support provided
to the surrounding soil is not removed;
b) treatment of the soil to a minimum depth of 3 m;
c) different shapes and configurations, consisting of either single columns, panels, grids, blocks, walls or
any combination of more than one single column, overlapping or not (see Annex A, Figures A.8 to A.12);
d) treatment of natural soil, fill, waste deposits and slurries, etc.;
Other ground improvement methods using similar techniques exist (see A.3.5).
Guidance on practical aspects of deep mixing, such as execution procedures and equipment, is given in
Annex A. Main applications are exemplified in Annex A, Figure A.14. Methods of testing, specification and
assessment of design parameters, which are affected by execution, are presented in Annex B.
mixing works carried out by two different methods: dry mixing and wet mixing.
Deep mixing considered in this document is limited to methods, which involve:
a) mixing by rotating mechanical mixing tools (see Annex A, Figure A.1) where the lateral support provided
to the surrounding soil is not removed;
b) treatment of the soil to a minimum depth of 3 m;
c) different shapes and configurations, consisting of either single columns, panels, grids, blocks, walls or
any combination of more than one single column, overlapping or not (see Annex A, Figures A.8 to A.12);
d) treatment of natural soil, fill, waste deposits and slurries, etc.;
Other ground improvement methods using similar techniques exist (see A.3.5).
Guidance on practical aspects of deep mixing, such as execution procedures and equipment, is given in
Annex A. Main applications are exemplified in Annex A, Figure A.14. Methods of testing, specification and
assessment of design parameters, which are affected by execution, are presented in Annex B.
Base documents: EN 14679:2005; EN 14679:2005/AC:2006
Replaced: EVS-EN 14679:2026
Drafts
prEN 18389
Bitumens and bituminous binders - Complementary Performance-related Specification Framework
Scope: This document specifies a framework of additional characteristics and associated test methods for bitumens and bituminous binders, which is complementary to other product standards for bitumens and bituminous binders. This document is applicable to bitumens and bituminous binders suitable for use in paving applications, but it is also applicable for other uses such as waterproofing membranes.
With regard to paving applications, the following characteristics are addressed:
- resistance to permanent deformation (rutting);
- resistance to low-temperature cracking;
- resistance to ravelling;
- resistance to fatigue cracking;
- temperature susceptibility;
- equi-stiffness temperature and phase angle;
- durability (evolution of equi-stiffness temperature and phase angle);
- mixing and handling characteristics (paving and compaction) temperatures;
- additional characteristics (e.g. solubility, elastic recovery and storage stability).
Not all the properties and characteristics established in the framework are universally relevant to all binders. For example, elastic recovery is not relevant for unmodified binders.
With regard to paving applications, the following characteristics are addressed:
- resistance to permanent deformation (rutting);
- resistance to low-temperature cracking;
- resistance to ravelling;
- resistance to fatigue cracking;
- temperature susceptibility;
- equi-stiffness temperature and phase angle;
- durability (evolution of equi-stiffness temperature and phase angle);
- mixing and handling characteristics (paving and compaction) temperatures;
- additional characteristics (e.g. solubility, elastic recovery and storage stability).
Not all the properties and characteristics established in the framework are universally relevant to all binders. For example, elastic recovery is not relevant for unmodified binders.
Base documents: prEN 18389