56.0

Chem-Stud^®

56.0 Chem-Stud^®









56.1 Introduction
The Chem-Stud Anchor System consists of self contained two-part glass
capsules and matching chisel pointed anchor rod which is installed using
a rotary hammer drill and rod adapters. The Chem-Stud adhesive is a
ester based resin material packaged in single use glass capsules
designed for use in the installation of 3/8" through 1-1/2" threaded
rod in solid concrete and masonry materials. It can also be used
for reinforcing bars.
During installation, the Chem-Stud System bonds the threaded rod to
the base material so no expansion forces are exerted against the walls
of the hole in the base material. This makes it ideal for use in anchoring
to solid base materials ranging from soft common brick to hard marble
or granite. Unlike expansion anchors, the anchor can be set close to
the edge of the base material.

56.2 Product Description

56.2.1 Chem-Stud Capsule

The Chem-Stud adhesive is packaged in single use glass capsules

which have pre-measured components. A separate capsule is used for

each size of 1/8" through 1-1/4" threaded anchor rod.

An outer capsule contains epoxy acrylate resin (vinyl ester) in which

quartz aggregate is suspended. The inner capsule contains a benzol

peroxide hardening agent. When the components are combined, they

form an adhesive mortar which mechanically bonds to the anchor rod to

solid base material. This type of system must be used with a chisel

pointed anchor rod which is spun into it using a rotary hammer drill.

56.2.2 Chem-Stud Chisel Pointed Anchor Rod

The Chem-Stud System is designed to be used with chisel pointed

anchor rods. The threaded anchor rods have a 45° chisel point cut on

one end to properly mix the components contained in the capsule during

installation. A 90° point is formed on the internally threaded inserts.

The threaded rod or reinforcing bar used must have a chisel point to

mix the components contained in the capsule during installation.

56.2.3 Chem-Stud Capsule Specifications

The following table lists the shelf life and storage recommendations for

the capsule. The properties listed apply to the cured Chem-Stud

adhesive mortar.

Shelf Life	2 to 4 years
Storage Conditions	Store dry at 40° to 90° F. Condtions to 60° F before use
Color	Mixed Adhesive mortar-amber
Consistancy	Paste mortar

The mortar volume listed in the following table is for the mixed

material. The diameter and length may be different than products

offered by other manufacturer's capsules because of variations in air

content. When comparing capsules, use the installed mortar volume.

Chem-Stud Recommended Setting Time

The setting times the for the Chem-Stud adhesive mortar are listed

below. The setting time is the minimum time required for the mortar to

reach its published physical properties and is listed for the base

material temperature, not ambient air temperature. For example,

when making installations inside a building in exterior walls during the

winter, the temperature of the hole may be different than the interior

temperature and should be measured to determine the setting time

required. in order to insure proper mixing, the capsule contents should

be conditioned to 60° F. prior to use.

Cure Time should be doubled for wet concrete.