CM-2 28-Day Compressive Strength Monitor Cement

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Certificate of Analysis

First Issued: March 1991
Version: March 1991

SOURCE

Following the depletion of the first National Strength Monitor Cement Sample, CM-1, a second National Monitor Cement Sample on strength, CM-2, has been prepared under the auspices of the Canadian Standards Association (CSA) Committee on Hydraulic Cements.

INTENDED USE

CM-2 is intended for use in the verification of testing procedures for compressive strength testing of cements.

METHOD OF PREPARATION

Sample CM-2 is a Type 20 cement obtained from the production of a Canadian cement plant. Approximately 1.5 metric tonnes of the material was blended in one lot, bagged into 2.5-kg units, and packed into plastic containers.

CERTIFIED VALUES

Twenty-two Canadian cement testing laboratories participated in the cooperative testing program used to characterize cement sample CM-2, by testing its 28-day cube compressive strength in mortars. Two samples of the homogenized cement were sent to each of the participating laboratories who were asked to determine the compressive strength of mortar cubes as per CAN/CSA-A5-M88 "Portland Cements". Characterization was in terms of 28-day strength only.

LEGAL NOTICE

CANMET-MMSL has prepared this reference material and statistically evaluated the analytical data of the interlaboratory certification program to the best of its ability. The purchaser, by receipt hereof, releases and indemnifies the CANMET-MMSL from and against all liability and costs arising out of the use of this material and information.

REFERENCE

A report, MSL 91-36 (TR), describing this reference material is available at no charge upon request to the Coordinator of CCRMP :

CCRMP, CANMET-MMSL (NRCan)

555 Booth Street, Ottawa
Ontario, Canada
K1A 0G1

Telephone: 343-543-6830
E-mail: ccrmp-pcmrc@nrcan-rncan.gc.ca

Recommended Value

	28-day Compressive Strength, MPa
Mean	39.8
95% Confidence Limits	38.8 - 40.7
Within-laboratory Standard Deviation	1.1