---
title: "ASTM C321"
url: "https://mat-cs.com/astm-c321/"
description: "This test method covers the determination of the bond strength between chemical-resistant mortars and chemical-resistant brick."
---

ASTM Standard Withdrawn 2021

# ASTM C321

Standard Test Method for Bond Strength of Chemical-Resistant Mortars

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## Significance and Use

4.1 This test offers a method of determining the bond strength between chemical-resistant mortars and chemical-resistant brick. The results obtained by this test method should be used as a guide in, but not as the sole basis for, selection of a chemical-resistant material for a particular application. If failure is within the brick, then the result reported shall be stated as a minimum bond strength and it shall be noted that the brick broke.

## Scope

1.1 This test method covers the determination of the bond strength between chemical-resistant mortars and chemical-resistant brick.

1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.