CEN/TS 14754-1:2007

Curing compounds - Test methods - Part 1: Determination of water retention efficiency of common curing compounds

This Technical Specification describes a procedure for determining the ability of a curing compound to prevent the evaporation of water from young concrete when applied immediately after the bleed water has evaporated.
NOTE   The procedure involves application to a horizontal surface; it may not be applicable for use on vertical or sloping surfaces.

Nachbehandlungsmittel - Prüfverfahren - Teil 1: Bestimmung der Wasserrückhaltefähigkeit von üblichen Nachbehandlungsmitteln

Diese Technische Spezifikation beschreibt ein Verfahren zur Bestimmung des Wasserrückhaltevermögens  eines Nachbehandlungsmittels für Beton, mit dem das Verdunsten von Wasser aus jungem Beton verhindert werden soll, wobei das Auftragen des Nachbehandlungsmittels unmittelbar nach Verdunsten von abgesondertem Wasser erfolgt.
ANMERKUNG   Das Verfahren betrifft die Anwendung auf horizontale Oberfläche; es ist überlicherweise nicht an senkrechten oder geneigten Oberflächen anwendbar.

Produits de cure - Méthodes d'essai - Partie 1 : Détermination de l'efficacité de protection des produits de cure courants

La présente Spécification technique décrit un mode opératoire permettant de déterminer la capacité d’un produit de cure, appliqué immédiatement après que l’eau de ressuage s’est évaporée, à empêcher l’évaporation de l’eau d’un béton au jeune âge.
NOTE   Le mode opératoire implique l’application sur une surface horizontale ; il peut ne pas s’appliquer à une utilisation sur des surfaces verticales ou inclinées.

Sušilne sestavine - Preskusne metode - 1. del: Ugotavljanje učinkovitosti zadrževanja vode enostavnih sušilnih sestavin

General Information

• Status: Published
• Publication Date: 20-Mar-2007
• ICS: 91.080.40 - Concrete structures
• 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/SC 3 - Admixtures for concrete
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 10-Dec-2014
• Completion Date: 14-Apr-2025
• Ref Project: SIST-TS CEN/TS 14754-1:2007 - Curing compounds - Test methods - Part 1: Determination of water retention efficiency of common curing compounds

Overview

CEN/TS 14754-1:2007 is a European Technical Specification developed by the CEN Technical Committee 104, addressing test methods for evaluating curing compounds used in concrete construction. Specifically, this part 1 standard focuses on the determination of water retention efficiency of common curing compounds. The specification provides a systematic procedure to measure how effectively a curing compound prevents water evaporation from young concrete surfaces, applied immediately after the bleed water on the concrete surface has evaporated.

This method applies to horizontal concrete surfaces and helps assess the curing compounds' performance during the critical early hydration phase, thereby ensuring quality concrete curing and improved durability. It is an essential reference for product manufacturers, quality control laboratories, and construction professionals involved in concrete curing processes.

Key Topics

• Water Retention Efficiency
  The primary measure in this standard is the water retention efficiency index, which expresses the reduction in water evaporation from treated concrete compared to untreated specimens. This index assists in quantifying curing compound effectiveness.

• Test Procedure Overview
  The test involves preparing concrete specimens with standardized mix designs, applying the curing compound at recommended rates, and monitoring water loss over controlled time intervals (0 h, 6 h, 24 h, and 72 h). Specimens are stored in a controlled environment with specific temperature and humidity conditions to simulate field curing.

• Reference Concrete Preparation
  A reference concrete mix is prepared using CEM I cement compliant with EN 197-1, natural aggregates conforming to EN 12620 with low water absorption, and water meeting EN 1008 standards. The mix ratio, compaction, and surface finishing are standardized to ensure repeatability and comparability of test results.

• Measurement and Calculations
  The methodology includes weighing treated and untreated specimens before and after curing compound application and over the test period. The standard defines formulas to calculate the curing efficiency index, accounting for solvent loss from the curing compound itself.

• Apparatus Requirements
  Equipment such as non-absorbent watertight molds, vibrating tables, spray guns, masks, balances with 0.1 g accuracy, and controlled environment rooms are specified to ensure consistent testing conditions.

Applications

• Quality Control in Concrete Construction
  Ensures curing compounds meet performance requirements for water retention, critical to preventing premature drying and shrinkage in young concrete.

• Product Development and Certification
  Manufacturers can use this standard to test and certify the water retention efficiency of new or existing curing compounds, facilitating market acceptance and compliance.

• Research and Comparative Analysis
  Enables comparative testing between different curing products to select the most effective curing agent based on quantitative performance data.

• Standardization and Regulatory Compliance
  Supports compliance with European concrete curing regulations and harmonized construction standards.

• Optimizing Concrete Durability
  Helps reduce concrete cracking and surface defects by verifying and ensuring efficient curing compound performance.

Related Standards

• EN 197-1: Cement - Composition and conformity criteria for common cements, providing cement material specifications used in reference concrete mixes.

• EN 206-1: Concrete - Specification, performance, production, and conformity, detailing concrete composition and performance requirements for construction.

• EN 480-1: Admixtures for concrete - Test methods - Reference concrete and mortar for testing, relevant for the preparation of reference specimens.

• EN 1008: Mixing water for concrete - Specification for sampling and testing, ensuring water quality adequacy.

• EN 12350 series: Testing fresh concrete, especially parts 2 (slump test), 6 (density), and 7 (air content) for fresh concrete characterization.

• EN 12620: Aggregates for concrete, specifying aggregate properties used in test concretes.

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Keywords: CEN/TS 14754-1, curing compounds, water retention efficiency, concrete curing, test methods, concrete durability, water evaporation prevention, curing compound testing, reference concrete, concrete standards, European Technical Specification.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2007
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]DGUåHYDQMDYRGHHQRVWDYQLKVXãLOQLKVHVWDYLQ
Curing compounds - Test methods - Part 1: Determination of water retention efficiency of
common curing compounds
Nachbehandlungsmittel - Prüfverfahren - Teil 1: Bestimmung der
Wasserrückhaltefähigkeit von üblichen Nachbehandlungsmitteln
Produits de cure - Méthodes d'essai - Partie 1 : Détermination de l'efficacité de protection
des produits de cure courants
Ta slovenski standard je istoveten z: CEN/TS 14754-1:2007
ICS:
91.100.30 Beton in betonski izdelki Concrete and concrete
products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CEN/TS 14754-1
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
March 2007
ICS 91.100.30
English Version
Curing compounds - Test methods - Part 1: Determination of
water retention efficiency of common curing compounds
Produits de cure - Méthodes d'essai - Partie 1 : Nachbehandlungsmittel - Prüfverfahren - Teil 1:
Détermination de l'efficacité de protection des produits de Bestimmung der Wasserrückhaltefähigkeit von üblichen
cure courants Nachbehandlungsmitteln
This Technical Specification (CEN/TS) was approved by CEN on 3 July 2006 for provisional application.
The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.
CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 14754-1:2007: E
worldwide for CEN national Members.

Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Terms and definitions .4
4 Principle.4
5 Apparatus .5
6 Reference concrete.5
6.1 Constituent materials .5
6.2 Test concrete.6
6.3 Production of reference concrete .6
7 Water retention efficiency test .6
7.1 Number of specimens .6
7.2 Determination of loss of solvent.7
7.3 Procedure .7
8 Calculations.8
9 Test report .9

Foreword
This document (CEN/TS 14754-1:2007) has been prepared by Technical Committee CEN/TC 104 “Concrete
and related products”, the secretariat of which is held by DIN.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, 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 the United Kingdom.
1 Scope
This Technical Specification describes a procedure for determining the ability of a curing compound to prevent
the evaporation of water from young concrete when applied immediately after the bleed water has evaporated.
NOTE The procedure involves application to a horizontal surface; it may not be applicable for use on vertical or
sloping surfaces.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 197-1, Cement — Part 1: Composition, specifications and conformity criteria for common cements.
EN 206-1, Concrete — Part 1: Specification, performance, production and conformity.
EN 480-1, Admixtures for concrete, mortar and grout — Test methods — Part 1: Reference concrete and
reference mortar for testing.
EN 1008, Mixing water for concrete - Specification for sampling, testing and assessing the suitability of water,
including water recovered from processes in the concrete industry, as mixing water for concrete.
EN 12350-2, Testing fresh concrete - Part 2: Slump test.
EN 12350-6, Testing fresh concrete – Part 6: Density.
EN 12350-7, Testing fresh concrete — Part 7: Air content — Pressure methods.
EN 12620, Aggregates for concrete.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
curing compound
liquid applied to the surface of concrete which prevents the evaporation of water after casting and/or during
the hardening phase at early days
3.2
water retention efficiency index
the reduction in evaporation of water from the test specimen treated with a curing compound compared to an
untreated specimen expressed as a percentage of the evaporation from the untreated specimen
4 Principle
The test consists of:
 measuring the quantity of water which evaporates, under specified conditions,
...