ASTM E1857-97 (R2021) pdf free download.Standard Guide for Selection of Cleaning Techniques for Masonry, Concrete, and Stucco Surfaces.
1.1 This guide covers procedures for the selection and assessment of cleaning techniques for removing soiling and staining from masonry. concrete, and stucco surfaces. Removal of paints. coatings. and graffiti may require measures beyond the scope of this guide. New construction is excluded from the scope of this guide.
1.2 This guide does not purport to address the causes of soiling or staining or to propose remedies for recurring soiling or staining.
1.3 Where work on surfaces of artistic, architectural, cultural, or historic significance is being considered, guidance from specialists should be sought.
1.4 This guide does not pulport to address removal and replacement of prior repairs, repair of damaged surfaces, or other irregularities that contribute to the uneven or discolored appearance of masonry, concrete, and stucco surfaces.
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
3. Terminology
3.1 Definitions—For detinitions of terms used in this guide, see Terminology Cl 19. C 1232, or E631.
3.2 Definitions of Termss Specific to This Standard.
3.2. 1 coating—clear or pigmented surface treatment applied for aesthetic improvement, enhanced durability, or other purpose.
3.2.2 contaminant—a foreign substance not intentionally introduced to a surface.
3.2.3 muriatic acid—commercial grades of hydrochloric acid that often contain iron impurities.
3.2.4 nebulized water spray—cleaning with a mist of water from tine nozzles.
3.2.5 poultice—cleaning systems composed of one or more liquids mixed with powder to form a paste.
3.2.6 soiling—a deposit of finely divided particulate matter or other contaminants adhered to the surface.
3.2.7 soiling crust—accumulation of soiling into a hardened layer at the surface. Partial or complete detachment of the crust may damage the substrate.
3.2.8 staining—a contaminant that has penetrated the surface.
3.2.9 surface—the exposed face of masonry, concrete, or stucco.ASTM E1857 pdf download.