By rowanjenkins | Last updated 24th April 2024

ASTM C227 Mortar-Bar Method for Potential Alkali Reactivity of Cement-Aggregate Combinations

ASTM C227 is a method that determines the sensitivity of cement-aggregate combinations. The standard involves comprehensive reactions related to alkalies that measure the increase in length of mortar bars containing the combination under the conditions of the test. Alkalies (potassium and sodium) involved in complex reactions are mainly isolated from cement. However, other external sources and materials, like concrete, can be used. Two types of alkali reactivity are assessed: (1) an alkali-silica comprising siliceous rocks, and (2) an alkali-carbonate reaction comprising dolomites. ASTM C227 evaluates the suitability of cement-aggregate combinations in concrete structures.

Read More

GET STARTED

    Share your requirements *

    Provide your contact information *

    Introduction to ASTM C227 

    ASTM C227 is a method that is used to assess cement-aggregate combinations involving concrete. The results from this testing identify the deleterious expansion of concrete by analyzing the reactivity of alkali-silica. MaTestLab is one of the best testing service providers, with the best network of testing laboratories in the USA to carry out ASTM C227 tests for our clients. This chemical method determines the petrographic examination in the presence of known reactive substances to examine the alkali reactivity after specimen testing and potential reactivity by chemical methods.  ASTM C227 provides information on variables such as the presence and degree of cracks, the expansion of mortar bars over time, and any surficial deposits or exudations. These results aid in the selection of appropriate materials for concrete construction by assessing the possibility of harmful reactions and the suitability of cement-aggregate combinations.

    ASTM C227 Test Method

    The method proceeds as follows:

    Apparatus SetupWire cloth sieves, mixer, paddle, mixing bowl, tamper and towel, containers
    Measurement of lengthASTM C227 measures the increase in the length of mortar due to the alkali reactivity of cement aggregates.

    ASTM C227 Specimen

    Specimen DetailsTo maintain the homogeneity of the mixture, two layers are made in a mold. The ratio of aggregate to cement is 2.25:1 by mass.
    Specimen PreparationFor two batches, at least four specimens are prepared. 
    Specimen DimensionsStandardized dimensions; however, length is measured after each interval to calculate expansion.

    ASTM C227 Results

    By measuring the expansion of the mortar, ASTM C227 finds the possibility of damage, distortion, and cracking to improve the integrity and shelf-life of engineering designs. ASTM C227 helps select the perfect combination of aggregate and cement, ensuring the durability of concrete structures. 

    Tests Related to ASTM C227 ASTM C33 is similar to ASTM C227 in that it provides specifications for aggregate selection in concrete structures.

    FAQ's

    Where can I get the astm c227 tested?

    You can share your astm c227 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm c227 test to various testing techniques.

    How much do I need to pay for the astm c227 test?

    Please contact us for a detailed quote for your astm c227 testing needs. Cost incurred to carry out different astm c227 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.

    How many samples are required for astm c227?

    The required number of samples or specimens should comply with the procedure given in the astm c227 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.

    How much discount can I get on the astm c227 test?

    MaTestLab has a vast testing laboratory network, hence we bring you the best testing facilities in a cost-effective way. We offer considerable discounts (15-20%) to our returning customers based on test volume and frequency.

    How many days will it take to complete the astm c227 test?

    The turnaround time for astm c227 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.

    Where can I get the astm c227 tested?

    You can share your astm c227 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm c227 test to various testing techniques.

    POPULAR TESTS
    ONE-STOP FOR ALL
    MATERIAL TESTING NEEDS
    MaTestLab Inc. offers accessible, quick, and affordable material testing, product testing, and failure analysis services. We support your on-demand testing and expert consultation needs with the help of our extensive network of material testing laboratories situated in the US and other parts of the world.
    MATERIAL TESTING
    We offer destructive and non-destructive tests over a range of mechanical, electrical, chemical, thermal, optical, corrosion, radiation, and biological testing methodologies defined by ASTM, ISO and other organizations.
    PRODUCT TESTING
    We help you evaluate and ensure your product quality and performance with standard and custom-made testing solutions. All the tests are done at well-equipped testing laboratories using standard testing methods for best output and satisfaction.
    FAILURE ANALYSIS
    Failure analysis ensures high levels of quality in every manufacturing process. We help you with getting the best failure or root cause analysis to determine the cause of the failure. The results help you identify means to prevent failure recurrences.
    Process for testing
    • STEP 01

      You share your testing requirements

    • STEP 02

      You share your sample(s)

    • STEP 03

      We deliver your test reports

    Get your testing done

    Let us known your testing requirements and we will be right back with a solution.

      Let us root for each other. Collaborate to grow, expand, and accelerate our businesses.

      Partner with us

        close

        Please share your requirement with us

          ×

          Contact Us

          Discover more from MaTestLab

          Subscribe now to keep reading and get access to the full archive.

          Continue reading