EN 1925:1999
(Main)Natural stone test methods - Determination of water absorption coefficient by capillarity
Natural stone test methods - Determination of water absorption coefficient by capillarity
This European standard specifies a method for determining the water absorption coefficient of natural stone by capillarily. Note: This method is not suitable for stones with an open porosity less than 1% when determined in accordance with prEN 1936.
Prüfverfahren für Naturstein - Bestimmung des Wasseraufnahmekoeffizienten infolge Kapillarwirkung
Diese Europäische Norm legt ein Verfahren zur Bestimmung des Wasseraufnahmekoeffizienten von Naturstein infolge Kapillarwirkung fest. Anmerkung: Dieses Verfahren ist nicht für Naturstein mit einer offenen Porosität < 1 % nach prEN 1936 geeignet.
Méthodes d'essai pour pierres naturelles - Détermination du coefficient d'absorption d'eau par capillarité
La présente norme européenne spécifie une méthode de détermination du coefficient d'absorption d'eau par capillarité de la pierre naturelle. Note: Cette méthode ne convient pas pour les pierres dont la porosité ouverte déterminée conformément au prEN 1936, est inférieure à 1 %.
Preskušanje naravnega kamna - Ugotavljanje vpijanja vode zaradi kapilarnega dviga
General Information
Overview
EN 1925:1999 is a European Standard (CEN) titled Natural stone test methods - Determination of water absorption coefficient by capillarity. The standard defines a laboratory method to assess how quickly and how much water a natural stone absorbs through capillary action. It is intended for use in evaluating stone behaviour in building and conservation contexts. Note: the method is not suitable for stones with an open porosity less than 1% when determined in accordance with prEN 1936.
Key topics and requirements
EN 1925 focuses on reproducible determination of the water absorption coefficient by capillarity for natural stone. Key technical topics typically addressed in the standard include:
- Scope and applicability - defining which stone types and porosity ranges are appropriate (exclusion for open porosity < 1%).
- Definitions and principles - describing the physical concept of capillary water uptake and the meaning of the absorption coefficient.
- Test specimens and conditioning - requirements for sampling, preparation and pre-conditioning of specimens to standard states.
- Apparatus and measurement - general requirements for equipment used to expose a specimen to water and to record mass or moisture uptake over time.
- Test procedure and data acquisition - a controlled procedure to measure capillary rise and to determine the absorption coefficient from observed water uptake.
- Expression of results and reporting - how to present results, test conditions and any deviations to ensure comparability. Because the standard is a formal CEN document, it emphasizes repeatability, traceability and clear reporting to support quality control and specification compliance.
Applications and users
EN 1925 is useful wherever the capillary moisture behaviour of natural stone matters:
- Testing laboratories performing material characterization and compliance testing.
- Stone producers and suppliers conducting quality control on blocks, slabs and finished products.
- Architects, engineers and specifiers assessing suitability of stone for façades, floors, paving, cladding and wet environments.
- Conservators and heritage professionals evaluating moisture risks to historic masonry and monuments.
- Building owners and contractors selecting materials and specifying durability/performance criteria.
Related standards
- prEN 1936 - referenced for open porosity determination (stones with open porosity < 1% are excluded from EN 1925).
- Other CEN natural stone test methods covering mechanical, frost and freeze–thaw, and durability tests.
Keywords: EN 1925, water absorption coefficient, capillarity, natural stone, test method, porosity, CEN.
Frequently Asked Questions
EN 1925:1999 is a standard published by the European Committee for Standardization (CEN). Its full title is "Natural stone test methods - Determination of water absorption coefficient by capillarity". This standard covers: This European standard specifies a method for determining the water absorption coefficient of natural stone by capillarily. Note: This method is not suitable for stones with an open porosity less than 1% when determined in accordance with prEN 1936.
This European standard specifies a method for determining the water absorption coefficient of natural stone by capillarily. Note: This method is not suitable for stones with an open porosity less than 1% when determined in accordance with prEN 1936.
EN 1925:1999 is classified under the following ICS (International Classification for Standards) categories: 73.020 - Mining and quarrying; 91.100.15 - Mineral materials and products. The ICS classification helps identify the subject area and facilitates finding related standards.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Preskušanje naravnega kamna - Ugotavljanje vpijanja vode zaradi kapilarnega dvigaPrüfverfahren für Naturstein - Bestimmung des Wasseraufnahmekoeffizienten infolge KapillarwirkungMéthodes d'essai pour pierres naturelles - Détermination du coefficient d'absorption d'eau par capillaritéNatural stone test methods - Determination of water absorption coefficient by capillarity
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標準SIST EN 1925:2000は、自然石における毛細管による水分吸収係数の測定方法を規定しており、自然石の性能評価において重要な役割を果たしています。この標準は、特に自然石の水分管理や耐久性に関心を持つ業界にとって非常に重要です。 この標準の強みは、具体的な測定手順を詳細に説明しており、実験を行う上での一貫性を確保する点です。また、毛細管現象を利用した水分吸収の測定方法は、石材の物理的特性を理解するために欠かせません。さらに、1%未満の開放孔隙率を持つ石材に対しては適用できないという注意点も明記されており、適切な条件下での利用を促しています。 この標準の関連性は、建築材料としての自然石の評価や選定に直結しています。水分吸収係数の正確な測定は、耐久性や劣化の可能性を評価するために欠かせません。よって、EN 1925:1999を遵守することで、施工品質や長期的な性能を保証することができ、業界全体の基準を高めることにつながります。
EN 1925:1999 표준은 자연석의 모세관에 의한 물 흡수 계수를 측정하는 방법을 규정하고 있습니다. 이 표준은 자연석의 물리적 특성을 이해하는 데 필수적인 역할을 하며, 특히 건축 및 조경 분야에서 자연석의 내구성을 평가하는 데 중점을 둡니다. 이 표준의 강점은 모세관 원리를 활용하여 다양한 자연석의 물 흡수 능력을 정량적으로 측정할 수 있다는 점입니다. 이를 통해 제작자는 자연석의 특성을 명확히 이해하고, 적합한 응용 분야를 선택할 수 있습니다. 또, EN 1925:1999는 실험 방법론이 명확하게 설명되어 있어 다른 연구자들이나 기술자들이 쉽게 따라 할 수 있도록 돕고 있습니다. 범위에서 언급된 바와 같이, 이 표준은 열린 다공성이 1% 미만인 석재에는 적합하지 않다는 점이 명확히 기재되어 있어, 사용자들이 올바른 적용 범위를 이해하는 데 도움을 줍니다. 이러한 제한은 정확한 테스트 결과를 보장하고, 부적합한 석재에 대한 잘못된 해석을 예방하는 데 기여합니다. 결론적으로, EN 1925:1999는 자연석 물 흡수 계수를 측정하기 위한 신뢰할 수 있는 기준을 제공하며, 관련 산업에서의 응용 가능성을 높이는 데 필수적인 표준으로 평가받고 있습니다.
The EN 1925:1999 standard serves a crucial role in the evaluation of the water absorption coefficient of natural stone through capillary action. By establishing a precise methodology for this determination, the standard ensures uniformity and reliability in testing procedures across various applications in the natural stone industry. One of the significant strengths of this standard is its specificity, which allows for accurate assessments of water absorption properties that are vital for understanding how natural stone will perform in different environmental conditions. Such performance metrics are essential for architects, engineers, and designers who require durable materials for construction projects. The standard’s focus on capillary absorption offers a distinct advantage, as it reflects real-world usage and performance, unlike simpler methods that might not account for all variables involved in water interaction with stone. Another notable aspect of EN 1925:1999 is its clear specification regarding limitations, particularly noting that the method is not suitable for stones with an open porosity of less than 1% as outlined in prEN 1936. This acknowledgement is important as it helps prevent misuse of the standard in contexts where the test might yield invalid results, thereby ensuring that only appropriate materials are subjected to the capillarity method, reinforcing accuracy and reliability in the field. In terms of relevance, this standard aligns with the current industry needs for reliable and standardized testing methods, particularly as the demand for sustainable building materials increases. The ability to effectively assess the water absorption characteristics of natural stone is particularly pertinent given the growing emphasis on longevity and performance in construction materials. By adhering to established guidelines within this standard, stakeholders in the natural stone sector can enhance the credibility of their materials, fostering trust among consumers and industry professionals alike. Overall, the EN 1925:1999 standard is a vital reference for determining the water absorption coefficient of natural stone by capillarity, with its rigorous methodology, clear limitations, and intrinsic relevance to modern construction practices.
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