ASTM C39/C39M-23 PDF
Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 8
- Дата публикации:
- 1 декабря 2023 г.
- Издание:
- C39/C39M
- ICS:
- 91.100.30
SIGNIFICANCE AND USE 5.1 Care must be exercised in the interpretation of the significance of compressive strength determinations by this test method since strength is not a fundamental or intrinsic property of concrete made from given materials. Values obtained will depend on the size and shape of the specimen, batching, mixing procedures, the methods of sampling, molding, and fabrication and the age, temperature, and moisture conditions during curing. 5.2 This test method is used to determine compressive strength of cylindrical specimens prepared and cured in accordance with Practices C31/C31M, C192/C192M, C617/C617M, C943, C1176/C1176M, C1231/C1231M, and C1435/C1435M, and Test Methods C42/C42M, C873/C873M, and C1604/C1604M. 5.3 The results of this test method are used as a basis for quality control of concrete proportioning, mixing, and placing operations; determination of compliance with specifications; control for evaluating effectiveness of admixtures; and similar uses. 5.4 The individual who tests concrete cylinders for acceptance testing shall meet the concrete laboratory technician requirements of Practice C1077, including an examination requiring performance demonstration that is evaluated by an independent examiner. Note 1: Certification equivalent to the minimum guidelines for ACI Concrete Laboratory Technician, Level I or ACI Concrete Strength Testing Technician will satisfy this requirement. SCOPE 1.1 This test method covers determination of compressive strength of cylindrical concrete specimens such as molded cylinders and drilled cores. It is limited to concrete having a density in excess of 800 kg/m3 [50 lb/ft3]. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The inch-pound units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.(Warning—Means should be provided to contain concrete fragments during sudden rupture of specimens. Tendency for sudden rupture increases with increasing concrete strength and it is more likely when the testing machine is relatively flexible. The safety precautions given in R0030 are recommended.) 1.4 The text of this standard references notes which provide explanatory material. These notes shall not be considered as requirements of the standard. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Abstract
Overview
ASTM C39/C39M-23 is the internationally recognized standard test method for determining the compressive strength of cylindrical concrete specimens. Issued by ASTM International, this standard specifies procedures for assessing concrete quality and is widely used in construction, quality control, and research applications. The document covers testing both molded cylinders and drilled cores with a density greater than 800 kg/m³, using either SI or inch-pound units.
Compressive strength testing provides essential data for verifying structural performance, proportioning of concrete mixes, and compliance with construction specifications. Since compressive strength is influenced by various production and testing variables, the standard emphasizes careful interpretation of results.
Key Topics
- Specimen Preparation and Curing The standard applies to specimens that have been prepared and cured following referenced ASTM practices, such as C31/C31M, C192/C192M, C617/C617M, and others.
- Testing Apparatus and Calibration Requirements for testing machines, calibration procedures, and apparatus, including specifications for bearing blocks and load indication systems.
- Loading Procedure Step-by-step instructions for applying axial load to a specimen, calculating compressive strength, accounting for specimen dimensions, and using correction factors for different length-to-diameter ratios.
- Result Interpretation Emphasizes that compressive strength results depend on variables like specimen size, shape, curing conditions, and preparation methods. Care is needed to correlate test results with field performance.
- Technician Qualification Individuals performing acceptance testing must meet specific competency and certification criteria (e.g., ACI Concrete Strength Testing Technician).
Applications
ASTM C39/C39M-23 is essential for a range of concrete-related activities, delivering practical benefits in the following areas:
- Quality Control in Concrete Construction Ensures that concrete delivered to job sites meets specified strength requirements, contributing to reliable, long-lasting structures.
- Proportioning and Mix Design Validation Assesses whether concrete mixes produce the required strength for their intended application.
- Compliance with Project Specifications Used by engineers, contractors, and testing agencies to verify that placed concrete conforms to contractual and regulatory strength requirements.
- Admixture Evaluation Evaluates the effectiveness of chemical and mineral admixtures by comparing the compressive strength of modified mixes to control samples.
- Research and Development Provides data to support innovation in concrete technology, new material formulations, and construction techniques.
Related Standards
ASTM C39/C39M-23 references and is complemented by several related documents, helping ensure uniformity and accuracy in concrete testing:
- ASTM C31/C31M – Making and Curing Concrete Test Specimens in the Field
- ASTM C42/C42M – Obtaining and Testing Drilled Cores and Sawed Beams of Concrete
- ASTM C617/C617M – Capping Cylindrical Concrete Specimens
- ASTM C192/C192M – Making and Curing Concrete Test Specimens in the Laboratory
- ASTM C1077 – Agencies Testing Concrete and Concrete Aggregates for Use in Construction
- ASTM C125 – Terminology Relating to Concrete and Concrete Aggregates
- ASTM C1231/C1231M – Use of Unbonded Caps in Determination of Compressive Strength
- ASTM E4 – Practices for Force Calibration and Verification of Testing Machines
- ASTM C943, C1176/C1176M, C1435/C1435M, C1604/C1604M, C873/C873M – Various practices for preparing, curing, and testing concrete specimens.
For comprehensive quality assurance, practitioners are encouraged to consult applicable referenced standards alongside ASTM C39/C39M-23.
By following ASTM C39/C39M-23, organizations ensure consistent, reliable measurements of compressive strength, supporting greater safety, compliance, and quality in concrete construction projects. This standard is indispensable for engineers, laboratory technicians, and construction professionals focused on concrete performance and regulatory compliance.
Технические детали
- Технический комитет
- C09 - Concrete and Concrete Aggregates
- SKU
- ASTM C39/C39M-23
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