EN 14488-6:2006

Testing sprayed concrete - Part 6: Thickness of concrete on a substrate

This standard describes methods for the determination of the thickness of sprayed concrete on a substrate after spraying. The results can also give an indication of the parallelism of the concrete to the substrate. The substrate may be rock, soil, concrete or other surface.

Prüfung von Spritzbeton - Teil 6: Schichtdicke von Betons auf einem Untergrund

Diese Europäische Norm beschreibt ein Verfahren zur Bestimmung der Schichtdicke von Spritzbeton auf einem Untergrund nach dem Aufspritzen. Die Ergebnisse können auch einen Hinweis bezüglich paralleler Schichtenlagen des Betons über  dem Untergrund liefern. Der Untergrund kann aus Gestein, Erdboden, Beton oder anderen Material bestehen.

Essais pour béton projeté - Partie 6 : Epaisseur du béton sur un support

La présente norme décrit des méthodes de détermination de l’épaisseur du béton après projection sur un support. Les résultats peuvent également donner une indication sur le parallélisme du béton sur le support. Le support peut être de la roche, du terrain, du béton ou toute autre surface.

Preskušanje brizganega betona – 6. del: Debelina betona na podlagi

General Information

• Status: Published
• Publication Date: 06-Jun-2006
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: CEN/TC 104 - Concrete ( performance, production, placing and compliance criteria )
• Drafting Committee: CEN/TC 104/WG 10 - Sprayed concrete
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 30-Jun-2023
• Completion Date: 14-Apr-2025
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Ref Project: SIST EN 14488-6:2006 - Testing sprayed concrete - Part 6: Thickness of concrete on a substrate

EN 14488-6:2006 – Testing Sprayed Concrete: Thickness Measurement on Substrate

Overview

EN 14488-6:2006 is a European standard developed by CEN that specifies reliable methods for measuring the thickness of sprayed concrete applied on various substrates such as rock, soil, or concrete. This standard is part 6 of the EN 14488 series dedicated to testing sprayed concrete, focusing specifically on thickness determination post-application. Accurate thickness measurement is essential to ensure structural integrity, quality control, and compliance with project specifications.

Key Topics

• Scope and Purpose
  The standard establishes procedures to determine the thickness of sprayed concrete immediately after spraying or once hardened, also providing an indication of the concrete layer’s parallelism relative to the substrate.

• Measurement Techniques

  • Fresh Concrete: Depth gauges (e.g., Talmeter) are pushed directly into the sprayed concrete until reaching the substrate, with thickness measured relative to a rule placed on the surface.
  • Hardened Concrete: Holes or cores are drilled perpendicular to the sprayed surface down to the substrate. Depth is then measured either directly in the hole or from the extracted core.

• Equipment Requirements
  Essential tools include a template sheet for marking measurement points, hammer and core drills, depth gauges, lamps or torches for substrate visibility, and measuring rules. Templates aid consistent hole positioning with a recommended spacing of 600 ± 50 mm in two lines of three holes each.

• Test Procedures
  The standard details step-by-step guidance on:

  • Marking and numbering positions for drilling holes.
  • Drilling clean holes or cores to fully penetrate the sprayed layer without interference from reinforcements.
  • Ensuring precise depth measurements by cleaning holes and avoiding surface irregularities.

• Results and Reporting
  Test results include minimum, maximum, and mean thickness values from the five measured points. Reports must reference the standard, describe the method used, include test locations, measurement data, and testing dates, aiding traceability and quality assurance.

Applications

EN 14488-6:2006 is widely used in construction and civil engineering projects where sprayed concrete is employed for structural supports, tunnel linings, slope stabilization, and repair works. The standard’s application helps:

• Verify sprayed concrete thickness meets design specifications.
• Detect uneven application or deviations impacting structural performance.
• Facilitate quality control and acceptance testing in contract specifications.
• Support correlated testing such as compressive strength and bond strength by enabling core sample extraction at marked thickness measurement sites.

Related Standards

EN 14488-6:2006 complements other parts of the EN 14488 series for comprehensive sprayed concrete testing:

• EN 14488-1 – Sampling fresh and hardened sprayed concrete
• EN 14488-2 – Compressive strength of young sprayed concrete
• EN 14488-4 – Bond strength of cores by direct tension
• EN 14488-5 – Energy absorption capacity of fibre reinforced slabs
• EN 14488-7 – Fibre content measurements in fibre reinforced concrete

Additionally, relevant standards used for related tests include:

• EN 12504-1 – Testing concrete in structures, specifically cored specimens for compressive strength testing.

Summary

By following the well-structured procedures outlined in EN 14488-6:2006, engineers and quality control professionals can obtain accurate and repeatable measurements of sprayed concrete thickness on various substrates. This ensures proper application, enhances safety, verifies structural compliance, and supports integrated testing efforts within sprayed concrete projects-making it an essential standard in modern construction quality assurance.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Testing sprayed concrete - Part 6: Thickness of concrete on a substratePreskušanje brizganega betona – 6. del: Debelina betona na podlagiEssais pour béton projeté - Partie 6 : Epaisseur du béton sur un supportPrüfung von Spritzbeton - Teil 6: Schichtdicke von Betons auf einem UntergrundTa slovenski standard je istoveten z:EN 14488-6:2006SIST EN 14488-6:2006en91.100.30Beton in betonski izdelkiConcrete and concrete productsICS:SLOVENSKI
STANDARDSIST EN 14488-6:200601-oktober-2006

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14488-6June 2006ICS 91.100.30 English VersionTesting sprayed concrete - Part 6: Thickness of concrete on asubstrateEssais pour béton projeté - Partie 6 : Epaisseur du bétonsur un supportPrüfung von Spritzbeton - Teil 6: Schichtdicke von Betonauf einem UntergrundThis European Standard was approved by CEN on 3 May 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14488-6:2006: E
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