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

    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

    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.
    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.
    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.
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