By content81c70d6e36 | Last updated 4th June 2025

ASTM C387 Standard Specification for Packaged, Dry, Combined Materials for Mortar and Concrete

The ASTM C387 standard list includes packaged, dry materials meant for use in making concrete and mortar. It involves types of concrete used for strong early-age needs, as well as normal and lightweight concrete, plus high-strength mortar and masonry mortars (Types N, S, and M). It details what is required for materials, proportioning, properties, packaging, mixing, sampling, and testing of concrete and mortar from the materials provided.

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    ASTM C387 Introduction

    ASTM C387 explains the specifications for dry materials in packaging that are used to mix mortar and concrete once water is added. It helps maintain a similar strength, makeup, and behavior in different uses. There are sections in the standard for high-early-strength, lightweight, and masonry mixes. Many people in construction depend on it for being reliable, simple, and providing quality assurance.

    ASTM C387 Test Method

    Sampling and PreparationConcrete and mortar samples are chosen from whole packages taken from the same batch. The entire dry concrete is measured and placed in a clean and watertight container so its net mass can be found.
    Mixing ProcedureTo mix concrete, dry material is added to water so that the slump is between 50 mm and 75 mm (2 to 3 inches). Concrete is mixed mechanically or by hand for non-air-entrained varieties.
    Testing and CuringSpecimens are put into cylinders and allowed to cure before their strength is checked by compressive tests 

    ASTM C387 Equipment and Sample Preparation

    Specimen DetailsSamples must have a minimum diameter of 75 mm (3 in) and a length that is twice their diameter.
    EquipmentMixing by hand is done using a clean and airtight container, as well as a shovel, a trowel, or gloved hands. A machine mixer with a drum that’s covered helps keep water from being lost during the mixing process. Scales are used for weighing the products.

    ASTM C387 Results and Interpretation

    The testing of packaged dry products is done by measuring the compressive strength of molded concrete or mortar specimens at given ages of curing. The three specimens used for testing must have an average strength of at least the required value, and no single specimen should be less than 90% as strong as required. The properties of the mortar are checked by testing its flow and workability to match the requirements for use. 

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    ASTM C387 Testing
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    Tests Related to ASTM C387

    ASTM C387 is related to standards like ASTM C33 for aggregates of concrete, ASTM C91 for stonework cement, and ASTM C144 for stone mortar aggregates.

    Use of ASTM C387 Testing in Various Industries

    • Creation of sidewalks, patios, footings, and steps
    • The use of masonry in construction, from both building and non-building parts.
    • Fixing and renovating structures made of concrete
    • Manufacturing of ready-to-use repair mortars

    Common Challenges and Troubleshooting in ASTM C387 Testing

    • Dips in performance because of incorrect water settings
    • Low strength readings may be caused by improper molding of the samples.
    • A lot of evaporation occurs when the machine is at rest

    FAQ's

    Where can I get the astm c387 tested?

    You can share your astm c387 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 c387 test to various testing techniques.

    How much do I need to pay for the astm c387 test?

    Please contact us for a detailed quote for your astm c387 testing needs. Cost incurred to carry out different astm c387 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 c387?

    The required number of samples or specimens should comply with the procedure given in the astm c387 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 c387 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 c387 test?

    The turnaround time for astm c387 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 c387 tested?

    You can share your astm c387 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 c387 test to various testing techniques.

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