EUROLAB
astm-c138-unit-weight-yield-and-air-content-of-concrete
Concrete and Mortar Testing AASHTO T112 Density of AggregateAASHTO T119 Compressive Strength of CylindersAASHTO T119 Compressive Strength of CylindersAASHTO T119 Compressive Strength of Cylindrical Concrete SpecimensAASHTO T161 Length Change of Hardened ConcreteAASHTO T22 Slump Test for Fresh ConcreteAASHTO T23 Air Content of Freshly Mixed Concrete by Pressure MethodAASHTO T24 Air Content of Hydraulic Cement Concrete by Pressure MethodAASHTO T71 Sampling and Testing of AggregateAASHTO T97 Compression Testing of ConcreteAASHTO T97 Compressive Strength of CylindersACI 209 Prediction of Creep, Shrinkage, and Temperature EffectsACI 211 Guide for Concrete Mixture ProportioningACI 214 Guide for Evaluation of Strength Test ResultsACI 234 Guide for Concrete DurabilityACI 301 Specifications for Structural ConcreteACI 318 Building Code Requirements for Structural ConcreteACI 318 Structural Concrete Code RequirementsACI 522 Guide for Fiber-Reinforced ConcreteACI 544 Fiber Reinforcement TestingASTM C1064 Temperature of Freshly Mixed Hydraulic-Cement ConcreteASTM C1074 Estimating Concrete Strength by Maturity MethodASTM C1077 Standard Practice for Laboratories Testing ConcreteASTM C109 Compressive Strength of Hydraulic Cement MortarsASTM C109M Compressive Strength of Hydraulic Cement MortarsASTM C114 Chemical Analysis of Hydraulic CementASTM C1152 Acid Soluble Chloride in Concrete and Concrete Raw MaterialsASTM C1157 Performance Specification for Hydraulic CementASTM C1202 Electrical Indication of Concrete’s Ability to Resist Chloride Ion PenetrationASTM C1231 Structural Testing of Drilled Concrete CoresASTM C1237 Flow of Mortar Using a Flow TableASTM C1240 Testing for Air-Entraining AdmixturesASTM C1260 Accelerated Mortar Bar Test for Alkali-Silica ReactionASTM C140 Density, Yield, and Air Content of MortarASTM C143 Slump of Hydraulic-Cement ConcreteASTM C143 Slump of Hydraulic-Cement ConcreteASTM C1512 Restrained Expansion of Mortar Bars Due to ASRASTM C156 Air Content in Freshly Mixed Concrete by Volumetric MethodASTM C157 Length Change of Hardened ConcreteASTM C157 Length Change of Hardened ConcreteASTM C1576 Testing Mortars for Air ContentASTM C1579 Early Age Shrinkage of Cementitious Mixtures Using Embedded Strain GaugesASTM C1585 Measurement of Rate of Absorption of Water by Hydraulic Cement ConcreteASTM C1602 Mixing Water for ConcreteASTM C1609 Flexural Performance of Fiber-Reinforced ConcreteASTM C1679 Method for Measuring Early-Age Shrinkage of Cementitious MixturesASTM C171 Sampling Fresh ConcreteASTM C185 Determination of Carbonation DepthASTM C185 Determination of Carbonation Depth in ConcreteASTM C185 Measurement of Setting Time of Hydraulic CementASTM C231 Air Content in Freshly Mixed Concrete by Pressure MethodASTM C231 Air Content of Freshly Mixed Concrete by Pressure MethodASTM C266 Time of Setting of Concrete Mixtures by Penetration ResistanceASTM C293 Flexural Strength of ConcreteASTM C293 Flexural Strength of Concrete Using Simple Beam with Third-Point LoadingASTM C293 Flexural Strength of Concrete Using Simple Beam with Third-Point LoadingASTM C293 Testing Concrete Beam Flexural StrengthASTM C31 Making and Curing Concrete Test SpecimensASTM C349 Compressive Strength of Hydraulic Cement MortarsASTM C39 Compressive Strength Testing of Concrete CylindersASTM C42 Obtaining and Testing Drilled Cores and Sawed BeamsASTM C469 Modulus of Elasticity and Poisson’s Ratio in ConcreteASTM C469 Static Modulus of Elasticity and Poisson’s Ratio of Concrete in CompressionASTM C494 Chemical Admixtures for ConcreteASTM C642 Density, Absorption, and Voids in Hardened ConcreteASTM C666 Resistance of Concrete to Rapid Freezing and ThawingASTM C78 Flexural Strength of ConcreteASTM C78 Flexural Strength of Concrete BeamsASTM C805 Rebound Number of Hardened ConcreteASTM C876 Half-Cell Potential of Steel in ConcreteBS 1881-121 Determination of Water Absorption of Hardened ConcreteBS 1881-203 Testing for Compressive StrengthBS 1881-208 Testing for Flexural StrengthBS 4550 Specification for Concrete TestingBS 4551 Testing of Concrete – Methods for Strength and DensityBS 812 Testing AggregatesBS 8500-1 Concrete – Part 1: Specification for Constituent MaterialsBS 8500-2 Concrete – Part 2: Specification for ConcreteBS EN 1015-11 Determination of Flexural and Compressive Strength of MortarBS EN 197-1 Cement StandardsBS EN 206 Specification for ConcreteBS EN 480-11 Admixtures for Concrete – Testing MethodsBS EN 934-2 Concrete AdmixturesEN 12390-10 Determination of Chloride Content in Hardened ConcreteEN 12390-2 Making and Curing Specimens for Strength TestsEN 12390-3 Compressive Strength of Test SpecimensEN 12390-5 Flexural Strength of Test SpecimensEN 12390-6 Tensile Splitting Strength of Test SpecimensEN 12390-7 Density of Hardened ConcreteEN 12390-8 Depth of Penetration of Water Under PressureEN 12620 Aggregates for ConcreteEN 12620 Aggregates for ConcreteEN 13039 Siliceous Sand for ConcreteEN 13055 Lightweight AggregatesEN 13286-47 Test Methods for Unbound and Hydraulically Bound MixturesEN 13670 Execution of Concrete StructuresEN 196-1 Determination of StrengthEN 196-3 Determination of Setting Times and SoundnessEN 196-6 Determination of FinenessEN 197-1 Cement Composition and SpecificationsEN 197-1 Composition, Specifications and Conformity Criteria for Common CementsEN 206-1 Concrete Specification, Performance, Production and ConformityISO 14001 Environmental Management in Concrete ProductionISO 15686-2 Service Life Planning of Concrete StructuresISO 1920-1 Sampling of Hardened ConcreteISO 1920-3 Sampling Fresh ConcreteISO 1920-4 Strength Testing of Concrete – Part 4: Strength by CompressionISO 1920-5 Determination of Tensile Splitting StrengthISO 1920-6 Flexural Strength Testing of ConcreteISO 1920-7 Determination of Density of Hardened ConcreteISO 1920-8 Determination of Water Absorption of Hardened ConcreteISO 1920-9 Determination of Freeze-Thaw ResistanceISO 21930 Sustainability in Building ConstructionISO 22112 Concrete Testing – Durability TestingISO 679 Determination of Strength of Hydraulic CementISO 679 Methods of Testing Cement – Determination of Strength

ASTM C138 Unit Weight, Yield, and Air Content of Concrete Laboratory Testing Service Provided by Eurolab

Standard-Related Information

The ASTM C138 Unit Weight, Yield, and Air Content of Concrete testing service is governed by various international and national standards. The primary standard for this testing service is the American Society for Testing and Materials (ASTM) C138 Standard Test Method for Density (Unit Weight) of Freshly Mixed Concrete.

Scope of the Standard

The ASTM C138 standard specifies the procedure for determining the unit weight, yield, and air content of freshly mixed concrete. The test method covers both field and laboratory procedures for measuring the density of fresh concrete. The standard also provides guidelines for sampling, testing, and reporting the results.

Relevant Standards

The following standards are relevant to this testing service:

  • ASTM C138 Standard Test Method for Density (Unit Weight) of Freshly Mixed Concrete

  • AASHTO T 121-07 Standard Test Method for Sampling and Testing Ready-Mixed Concrete

  • EN 12350-6 European Standard: Ready-mixed concrete - Part 6: Test methods - Determination of the density of freshly mixed concrete

  • ISO 22900-2 International Standard: Road construction - Control of fresh concrete - Part 2: Determination of the density and yield of freshly mixed concrete

    • International and National Standards

    The ASTM C138 standard is widely adopted by various countries, including the United States, Canada, Mexico, Brazil, Australia, and many others. The standard has also been harmonized with international standards such as EN 12350-6 and ISO 22900-2.

    Standard Development Organizations

    The ASTM International (formerly American Society for Testing and Materials) is a non-profit organization that develops and publishes voluntary consensus standards for materials, products, systems, and services. The European Committee for Standardization (CEN) and the International Organization for Standardization (ISO) are also involved in developing and publishing international standards related to this testing service.

    Standard Evolution and Updates

    Standards evolve over time as new technologies, methods, and practices emerge. The ASTM C138 standard has undergone several revisions since its initial publication in 1908. The most recent revision was published in 2019, which updated the test method for determining the density of fresh concrete using a vibrating table.

    Standard Compliance Requirements

    Compliance with this testing service is required by various industries and sectors, including:

  • Ready-mixed concrete manufacturers

  • Construction companies

  • Government agencies (e.g., transportation departments)

  • Research institutions

    • Standard Compliance Benefits

    Conformance to this standard provides numerous benefits, including:

  • Ensuring consistency and accuracy of test results

  • Facilitating inter-laboratory comparisons and round-robin testing

  • Supporting research and development activities

  • Enhancing product safety and reliability

  • Meeting regulatory requirements

    • Standard-Related Resources

    The following resources are available for further information on this standard:

  • ASTM International: www.astm.org(http://www.astm.org)

  • AASHTO: www.transportation.org(http://www.transportation.org)

  • CEN: www.cen.eu(http://www.cen.eu)

  • ISO: www.iso.org(http://www.iso.org)

    • Standard-Related Training and Certification

    Eurolab offers training and certification programs for laboratory personnel to ensure they are competent in conducting this testing service.

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    Standard Requirements and Needs

    The ASTM C138 Unit Weight, Yield, and Air Content of Concrete testing service is essential for various reasons:

  • Quality Assurance: This test ensures that the concrete meets the required standards for density, yield, and air content.

  • Product Safety: The results of this test are critical in ensuring the safety and reliability of structures made with ready-mixed concrete.

  • Regulatory Compliance: Compliance with this standard is mandatory for industries involved in construction, transportation, and infrastructure development.

  • Competitive Advantage: Companies that comply with this standard demonstrate their commitment to quality and safety, which can be a competitive advantage in the market.

    • Business and Technical Reasons

    The business and technical reasons for conducting this testing service include:

  • Ensuring compliance with regulatory requirements

  • Meeting industry standards and specifications

  • Maintaining product safety and reliability

  • Enhancing quality and consistency of test results

    • Consequences of Not Performing This Test

    Failure to conduct this testing service can result in:

  • Non-compliance with regulations and standards

  • Inaccurate or inconsistent test results

  • Reduced product safety and reliability

  • Loss of reputation and market share

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    Test Conditions and Methodology

    The ASTM C138 Unit Weight, Yield, and Air Content of Concrete testing service involves the following steps:

    1. Sample Preparation: Obtain a representative sample of freshly mixed concrete.

    2. Testing Equipment: Use a vibrating table to measure the density of fresh concrete.

    3. Measurement and Analysis: Record the test results using specialized equipment (e.g., densometers, yield meters).

    4. Reporting: Provide accurate and detailed reports on the test results.

    Eurolabs Testing Capabilities

    Eurolab is equipped with state-of-the-art testing equipment to conduct this service accurately and efficiently.

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    Standard-Related Documentation

    The following documentation is required for conducting this testing service:

  • ASTM C138 Standard Test Method for Density (Unit Weight) of Freshly Mixed Concrete

  • AASHTO T 121-07 Standard Test Method for Sampling and Testing Ready-Mixed Concrete

  • EN 12350-6 European Standard: Ready-mixed concrete - Part 6: Test methods - Determination of the density of freshly mixed concrete

    • Standard-Related Training

    Eurolab offers training programs to ensure laboratory personnel are competent in conducting this testing service.

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    Conclusion

    The ASTM C138 Unit Weight, Yield, and Air Content of Concrete testing service is a critical component of quality assurance, product safety, and regulatory compliance. Eurolab is committed to providing accurate and reliable results for this testing service, ensuring that clients meet the required standards and specifications.

    Recommendations

    We recommend that companies involved in construction, transportation, and infrastructure development comply with this standard by conducting regular testing and evaluation of their products and processes.

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