prEN 1015-8

Methods of test for mortar for masonry - Part 8: Determination of water retentivity of fresh mortar

This European Standard specifies a method for determining the water retentivity of freshly mixed mortars (in the following referred to as fresh mortars) containing mineral binders and normal, as well as light weight aggregates, when subjected to suction.  This method applies to masonry mortars, rendering mortars and plastering mortars.

Prüfverfahren für Mörtel für Mauerwerk - Teil 8: Bestimmung des Wasserrückhaltevermögens von Frischmörtel

Diese Europäische Norm legt ein Verfahren zur Bestimmung des Wasserrückhalte- vermögens von frisch angemischten Mörteln (im folgenden kurz "Frischmörtel" genannt), die mineralische Bindemittel und Normal- sowie auch Leichtzuschläge enthalten, aufgrund eines Saugvorganges fest. Das Verfahren gilt für Mauer- und Putzmörtel.

Méthodes d'essai pour mortier pour maçonnerie - Partie 8: Détermination de la rétention d'eau du mortier frais

La présente norme européenne spécifie une méthode de détermination de la capacité des mortiers fraîchement malaxés (désignés ci-après comme mortiers frais) contenant des liants minéraux et normaux, aussi bien des granulats normaux aussi bien que des légers, à retenir l'eau lorsqu'ils sont soumis à la succion.  Cette méthode s'applique à des mortiers de montage ou à des mortiers d'enduit extérieur ou intérieur.

Metode preskušanja zidarske malte - 8. del: Določevanje zadrževanja vode sveže malte

General Information

• Status: Not Published
• Publication Date: 02-Sep-2001
• Technical Committee: CEN/TC 125 - Masonry
• Drafting Committee: CEN/TC 125/WG 4 - Test methods
• Current Stage: 4098 - Decision to abandon - Enquiry
• Start Date: 08-Feb-2000
• Completion Date: 11-Feb-2026
• 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: PSIST prEN 1015-8:2001 - Methods of test for mortar for masonry - Part 8: Determination of water retentivity of fresh mortar

Overview

prEN 1015-8 - Methods of test for mortar for masonry - Part 8: Determination of water retentivity of fresh mortar is a CEN draft European Standard that specifies a laboratory method to measure the ability of freshly mixed mortars to retain water when subjected to suction. The scope covers mortars containing mineral binders and both normal and lightweight aggregates, and applies to masonry mortars, rendering mortars and plastering mortars.

Key topics and requirements

• Purpose: Determine the water retentivity of fresh mortar under suction to assess suitability for adhesion, workability and curing on absorbent substrates.
• Materials covered: Fresh mortars with mineral binders and normal or lightweight aggregates.
• Test focus: Behaviour of the fresh mortar when subjected to suction (i.e., the capacity to resist water loss to substrates or suction plates).
• Standardization elements:
  • Defined scope and applicable mortar types.
  • Controlled sampling and specimen preparation to ensure repeatable results.
  • A reproducible test procedure to quantify water retention for comparative and quality-control use.
  • Reporting of results in standardized form so formulations, batches and workmanship can be compared.

Note: prEN 1015-8 defines the method concept and the parameters to be measured; it does not replace project-specific requirements or on-site workmanship controls.

Applications

• Quality control in mortar production - manufacturers can use the method to verify that fresh mortar batches meet water-retentivity expectations before shipment.
• Product development and formulation - R&D teams use water-retentivity data to optimize binder, admixture and aggregate ratios for desired application (masonry, rendering, plastering).
• Construction specification and conformity assessment - specifiers and testing laboratories use the standard to assess compliance with performance requirements and to reduce risk of poor adhesion or premature drying on absorbent backgrounds.
• Site troubleshooting - contractors and technical advisors use water-retentivity results to diagnose issues related to suction, workability and setting on different substrates.

Who uses this standard

• Mortar and cementitious product manufacturers
• Independent testing laboratories and certification bodies
• Construction materials R&D teams
• Contractors, specifiers and quality managers in masonry, plastering and rendering trades

Related standards

• prEN 1015 series - Methods of test for mortar for masonry (other parts cover sampling, consistency, strength and durability tests).
• prEN 1015-9 (referenced in related documents) - Determination of service life of fresh mortar.

Keywords: prEN 1015-8, water retentivity, fresh mortar testing, masonry mortar, rendering mortar, plastering mortar, CEN standard, mortar quality control.

Standards Content (Sample)

SLOVENSKI STANDARD
PSIST prEN 1015-9:1995
01-december-1995
0HWRGHSUHVNXãDQMDPDOW]D]LGRYHGHO'RORþDQMHþDVDYJUDGOMLYRVWLVYHåH
PDOWH
Methods of test for mortar for masonry - Part 9: Determination of service life of fresh
mortar
Ta slovenski standard je istoveten z: prEN 1015-9:1993
ICS:
91.100.10 Cement. Mavec. Apno. Malta Cement. Gypsum. Lime.
Mortar
PSIST prEN 1015-9:1995 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

-----------------
...