EN 772-9:1998

Methods of test for masonry units - Part 9: Determination of volume and percentage of voids and net volume of clay and calcium silicate masonry units by sand filling

This European Standard specifies a method of determining the volume and percentage of voids and net volume of calcium silicate masonry units containing cells, frogs and holes.

Prüfverfahren für Mauersteine - Teil 9: Bestimmung des Loch- und Nettovolumens sowie des prozentualen Lochanteils von Kalksandsteinen mittels Sandfüllung

Diese Europäische Norm legt ein Verfahren zur Bestimmung des Lochvolumens von Kalksandsteinen mit Kammern, Vertiefungen und Löchern fest.

Méthodes d'essai des éléments de maçonnerie - Partie 9: Détermination du volume et du pourcentage de vides et du volume net absolu des éléments de maçonnerie en silico-calcaire par remplissage de sable

La présente norme européenne spécifie une méthode permettant de déterminer le volume et le pourcentage des vides et le volume net absolu des éléments de maçonnerie en silico-calcaire présentant des alvéoles, des évidements et des trous.

Metode preskušanja zidakov - 9. del: Ugotavljanje lukenj in neto prostornine kot tudi odstotnega deleža lukenj v apneno peščenih zidakih, polnjenih s peskom

General Information

• Status: Published
• Publication Date: 18-Aug-1998
• ICS: 91.100.15 - Mineral materials and products
• Technical Committee: CEN/TC 125 - Masonry
• Drafting Committee: CEN/TC 125/WG 4 - Test methods
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 23-Jan-2025
• 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 772-9:1999 - Methods of test for masonry units - Part 9: Determination of volume and percentage of voids and net volume of calcium silicate masonry units by sand filling

Relations

• Amended By: EN 772-9:1998/A1:2005 - Methods of test for masonry units - Part 9: Determination of volume and percentage of voids and net volume of clay and calcium silicate masonry units by sand filling
• Effective Date: 22-Dec-2008

Overview

EN 772-9:1998 - Methods of test for masonry units - Part 9: Determination of volume and percentage of voids and net volume of clay and calcium silicate masonry units by sand filling - is a CEN European test standard that specifies a reliable sand-filling method to determine the geometric and net volumes of masonry units that contain cells, frogs or holes. The standard is primarily aimed at calcium silicate masonry units and defines how to measure total volume, calculate void percentage and obtain net (solid) volume for use in design, production control and conformity assessment.

Key topics and requirements

• Scope and applicability: Applies to masonry units with internal cells, frogs or holes where sand filling is an appropriate method for volume determination.
• Sample selection and preparation: Defines requirements for representative specimens and their preparation before testing (cleaning, drying status as applicable).
• Apparatus and materials: Specifies the use of calibrated sand and suitable filling/measurement equipment to ensure repeatable results.
• Sand-filling procedure: Describes filling technique to measure the volume occupied by voids and how to derive net volume from total and void volumes.
• Calculations and results reporting: Requires clear methods for calculating percentage of voids and net volume, with guidance on units, rounding and reporting formats.
• Quality and accuracy considerations: Emphasises repeatability, documentation of test conditions and handling of atypical units (e.g., unusual cell shapes).

(Note: specific procedural steps, measurement tolerances and numerical limits are contained in the full standard document.)

Applications

• Quality control and production testing in masonry unit manufacturing (calcium silicate blocks and bricks).
• Laboratory testing and conformity assessment for product certification and regulatory compliance.
• Architectural and structural design where accurate net volume and void percentage inform thermal, acoustic and structural calculations.
• Procurement and specifications writing for building materials to ensure consistent material properties across batches.

Who uses this standard

• Testing laboratories and quality assurance teams
• Masonry unit manufacturers (product development and production control)
• Engineers, architects and specifiers requiring verified material data
• Certification bodies and regulators assessing compliance with European norms

Related standards

• EN 772 series (other test methods for masonry units)
• EN 771 series (product specifications for masonry units)

Keywords: EN 772-9, masonry units, volume determination, percentage of voids, net volume, sand filling, calcium silicate, masonry testing, quality control.

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-1999
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WXGLRGVWRWQHJDGHOHåDOXNHQMYDSQHQRSHãþHQLK]LGDNLKSROQMHQLKVSHVNRP
Methods of test for masonry units - Part 9: Determination of volume and percentage of
voids and net volume of calcium silicate masonry units by sand filling
Prüfverfahren für Mauersteine - Teil 9: Bestimmung des Loch- und Nettovolumens sowie
des prozentualen Lochanteils von Kalksandsteinen mittels Sandfüllung
Méthodes d'essai des éléments de maçonnerie - Partie 9: Détermination du volume et du
pourcentage de vides et du volume net absolu des éléments de maçonnerie en silico-
calcaire par remplissage de sable
Ta slovenski standard je istove
...