ASTM/AASHTO Standards for Concrete Tests

ASTM (American Society for Testing and Materials) and AASHTO (American Association of State Highway and Transportation Officials) standards play a critical role in the testing of concrete, providing comprehensive guidelines and procedures to ensure the quality, performance, and durability of this essential construction material.

ASTM standards cover a wide range of aspects related to concrete testing. One of the most significant standards is ASTM C39, which outlines the procedure for determining the compressive strength of cylindrical concrete specimens. This test is crucial in assessing the load-bearing capacity and structural integrity of concrete. ASTM C39 provides guidelines for specimen preparation, curing conditions, and the testing procedure, enabling consistent and reliable results.

Another widely used standard is ASTM C143/C143M, which details the procedure for determining the slump of freshly mixed concrete. Slump testing measures the consistency and workability of concrete, ensuring proper placement and consolidation during construction. ASTM C143/C143M defines the apparatus, testing procedure, and acceptance criteria, allowing for consistent measurement and comparison of slump values.

ASTM C231 is another important standard, specifically focusing on the determination of the air content of freshly mixed concrete. This standard provides guidelines for conducting the air content test using the pressure method. The information obtained from this test is crucial in assessing the durability, workability, and performance characteristics of concrete.

Additionally, ASTM C1064 establishes procedures for measuring the temperature of freshly mixed concrete. This standard ensures that concrete is within the specified temperature range for proper hydration and placement.

AASHTO standards are widely adopted for transportation-related concrete testing. AASHTO T 22 is a commonly used standard for determining the compressive strength of cylindrical concrete specimens. AASHTO T 23 focuses on the testing of freshly mixed concrete for slump, air content, and temperature.

Several products are associated with these ASTM and AASHTO standards. For example, air meters, such as the Type B Pressure Air Meter, are used to determine the air content of freshly mixed concrete according to ASTM C231. These meters provide accurate and reliable measurements of air voids within the concrete.

Another important product is the slump cone, used in accordance with ASTM C143/C143M to measure the consistency and workability of concrete. The slump cone allows for the precise measurement of the slump, indicating the ease of concrete flow and its ability to be properly placed and consolidated.

In terms of compressive strength testing, concrete testing machines are commonly used. These machines apply a compressive force to concrete specimens in accordance with standards like ASTM C39 and AASHTO T 22. They measure the maximum load that the specimen can withstand, providing valuable information about the concrete's structural capacity.

Thermometers and temperature probes are essential tools for measuring the temperature of freshly mixed concrete, as outlined by ASTM C1064. These instruments ensure that the concrete temperature is within the specified range for optimal curing and placement.

Overall, the use of ASTM and AASHTO standards in concrete testing ensures consistent and reliable assessment of concrete properties. The associated products, including air meters, slump cones, concrete testing machines, and thermometers, facilitate accurate and efficient testing procedures, contributing to the quality and performance of concrete in construction projects.

Certified MTP recommends different types and styles of penetrometers for density tests:

Soil Pocket Penetrometer

Soil Pocket Penetrometer, Chrome-Plated with Engraved Scale

AMS 59032 Pocket Penetrometer

Dial Geotester Pocket Penetrometer Kit

Acme Mortar Penetrometer, Bench-Top