BS EN 13057:2002 – Products and systems for the protection and repair of concrete structures — Test methods — Determination of resistance of capillary absorption
1 Scope
This European Standard is one of a series dealing with products and systems for the protection and repair of concrete structures. It specifies a method for determining the resistance to water absorption of repair products and systems, as defined in prEN 1 504-3 1 .
The method is based on measuring the increase in weight due to capillary absorption of water over a fixed time interval. The weight of water absorbed is expressed as a coefficient, indicating the tendency of the specimen to imbibe water by capillary action without external pressure applied.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed hereafter.
For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments).
EN 1 96-1 , Methods of testing cement – Part 1: Determination of strength. prEN 1 504-3, Products and systems for the protection and repair of concrete structures – Definitions, requirements, quality control and evaluation of conformity – Part 3: Structural and non-structural repair. ISO 554, Standard atmospheres for conditioning and/or testing – Specifications. ISO 556, Conditioning and testing – Standard atmospheres – Definitions.
3 Principle
The method of test is applicable to repair grout, mortar or concrete specimens. Hereafter the term mortar specimen refers equally to concrete, unless stated to the contrary. Resistance to capillary absorption is measured on the trowelled upper face of 1 00 mm diameter cylindrical specimens of mortar, with a thickness of at least 20 mm or three times the maximum aggregate size, whichever is the greater. As an alternative, the cut face of 1 00 mm diameter cores of repair mortar may be used. 4 Equipment
4.1 Standard laboratory climate in accordance with the requirements of annex A.
4.2 Moulds for producing specimens made from non absorbent, rigid material, not attacked by cement paste or polymers, of (1 00 ± 5) mm internal diameter and (25 ± 0,5) mm depth, or other depth necessary to satisfy the requirement of being three times the maximum aggregate size. Suitable moulds may be prepared from rigid polypropylene pipe, cut to the appropriate length. It shall be ensured that around the circumference, the length of pipe is within ± 0,5 mm of the target depth of the specimen.
4.3 Flat bottomed, rigid tray and cover, into which the specimens are placed, resting on knife-edge supports to achieve a depth of water immersion of (2,0 ± 1 ,0) mm. The area of the tray should be at least twice the area of the test specimen(s) to be stood in the tray with a cover to enclose fully the tray.
BS EN 13057:2002 – Products and systems for the protection and repair of concrete structures — Test methods — Determination of resistance of capillary absorption