Microblasting cleaning for façade repair and maintenance: Selecting technical parameters for treatment efficiency

Manuel Ángel Iglesias-Campos, José Luis Prada Pérez, Salvador García Fortes

    Research output: Contribution to journalArticleResearchpeer-review

    3 Citations (Scopus)

    Abstract

    © 2015 Elsevier Ltd. Abstract This research examines abrasive blasting cleaning on a soft render coating and its effects on the surface. After analysing substrate properties by SEM-EDS, XRD and FTIR-ATR, and their potential influence on treatment, cleaning tests were made with glass beads, micronized glass and aluminium silicate at 45°and 75° blasting angle keeping other parameters constant. As microblasting can leave a rougher surface, influencing subsequent substrate decay, analysis of area field roughness obtained through 3D stereomicroscopy, complemented with macrophotography, portable microscope and spectrophotometry analysis, were used to evaluate cleaning surfaces. Best results were obtained with glass beads, due to its shape and size, using 75° blasting angle. Findings concerning microblasting efficiency and effectiveness, including damage to the substrate and other side effects, are also described. Results allow the selection of parameters of the technique when it is needed for façade repair and maintenance.
    Original languageEnglish
    Article number6848
    Pages (from-to)605-612
    JournalConstruction and Building Materials
    Volume94
    DOIs
    Publication statusPublished - 21 Jul 2015

    Keywords

    • 3D stereomicroscopy
    • Abrasive blasting
    • Area roughness
    • Cleaning
    • Gypsum render
    • Optical techniques
    • Paint layer
    • Primary profile
    • Spectrophotometry

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