243-SGM: Specifications for non-structural grouting of historic masonries and architectural surface
Technical Committee
General Information
Deputy Chair: Prof. Dr.-Ing. Christian U. GROSSE
Mrs Susanne PALECKI
Prof. Dr. Dionys VAN GEMERT
Subject matter
The establishment of general performance criteria and recommendations dealing with
(i) the materials choice and the application technique of non-structural grouts for restoring and repairing pre-existing masonry walls (e.g. to solve permeability problems)
(ii) the materials choice and application technique forthe conservation historic of architectural surfaces ( e.g. mosaics, frescoes, plasters, natural stone).
Focus on materials properties, compatibility aspects and application techniques.
Works will take into account:
1) Requirements for non-structural grout application and surface repair, depending on their function
2) Fundamental parameters for grout and surface repair design
3) Testing methods for measuring those parameters.
4) Methodologies and techniques for the control of the execution operation
5) Performance evaluation
Terms of reference
The objectives will be achieved by reviewing and comparing the results of recent research and practical experiences, at international expert level.
The time needed for achieving deliverables of practical relevance to the research world and the building practice is rated at 4-5 years.
The regular and correspondent members to be recruited are well known experts with outstanding academic as well as practical experience in the field of restoration of masonry structures. Several of them participated in former and current RILEM Committees, whose subject is relevant to the proposed one.
Those Committees are:
- Technical Committee 167-COM: Characterization of historic mortars with respect to their repair
- Technical Committee 203-RHM: Repair mortars for historic masonry
- Technical Committee 216-SAM: Strategies for the assessment of historic masonry structures with NDT
Detailed working programme
The T.C. should work along the following lines:
- definition of problems related to the need for non-structural grouting and surface repair
- definition of the various functions of a grout and surface repair material
- general classification of grouts and surface repair materials
- requirements for design, depending on the function of the repair material
- identification of testing methods for measuring those parameters
- identification of suitable methodologies and techniques for the control of the application quality (before, during, after), including surveys of walls and surfaces where the repairs are to be applied and "in situ" tests
- identification of machinery requirements application
- quality control procedures and acceptability limits
Technical environment
Expected achievements
Group of users
Specific use of the results
