Humboldt H-2800 Briquette Mold for Mortar Tensile Strength Tests – ASTM C307

Prepare consistent briquette specimens for mortar tensile strength testing

The Humboldt H-2800 Briquette Mold is a cast-bronze mold designed for preparing briquette specimens used in tensile strength testing of mortar. Its two mold halves are held securely together by bronze clamps with pins, helping maintain the required mold configuration and prevent spreading while the specimen is being formed.

For mortar tensile strength testing

The H-2800 provides the specialized briquette shape required for tensile testing rather than the cube specimens used for compressive strength testing. Humboldt identifies the mold for hydraulic cement mortar tensile strength testing and lists it for use with ASTM C307 procedures.

Cast-bronze construction

The mold is manufactured from cast bronze. Its two-piece construction allows the mold to be opened for specimen removal after preparation while providing a rigid assembly during molding.

Bronze clamps help prevent spreading

Bronze clamps equipped with pins secure the two mold halves together. This arrangement is specifically designed to prevent the mold from spreading while the mortar specimen is being formed, helping maintain the intended briquette geometry.

ASTM C307 testing

Humboldt lists the H-2800 as equipment supporting ASTM C307, the test method for determining the tensile strength of chemical-resistant mortars, grouts and monolithic surfacings. The prepared briquette specimens are subsequently tested using suitable tensile testing equipment in accordance with the applicable test procedure.

Specifications

Frequently Asked Questions

What is the Humboldt H-2800 used for?

The H-2800 is used to prepare briquette-shaped mortar specimens for tensile strength testing. Humboldt lists the mold for hydraulic cement mortar tensile tests and as equipment supporting ASTM C307.

What is the difference between a briquette mold and a cement cube mold?

A briquette mold prepares a shaped specimen intended for tensile testing, whereas cement cube molds prepare specimens commonly used for compressive strength testing. The H-2800 is specifically designed for preparing tensile-test briquettes.

How are the two halves of the mold secured?

The two mold halves are held together by bronze clamps with pins. Humboldt states that this arrangement is designed to prevent spreading during molding.

Is the H-2800 an asphalt ductility briquette mold?

No. The H-2800 is a mortar-test briquette mold. Humboldt offers separate briquette molds for asphalt ductility testing, so these products should not be considered interchangeable.

Does the H-2800 comply with ASTM C307?

Humboldt lists ASTM C307 as the supported standard for the H-2800. The standard covers tensile strength testing of chemical-resistant mortars, grouts and monolithic surfacings.