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The performance of Rosendale Natural Cement® has been well-documented over the course of its long history of use. The following are typical performance data from a variety of historic sources. Modern test programs are in progress at a number of sites in the United States and in Europe. Results will be reported here as they become available.



Set Time

 >30 minutes (ASTM C10);
Faster set than Portland cement,
Much faster than hydraulic lime

Compressive Strength

Minimum 1020 psi (7 MPa) @ 28 days (1:1 with test sand)
Lower initial strength than Portland cement,
Comparable strength to Lime/Portland Blends and Hydraulic Lime

Modulus of Elasticity

Typically 535,000-640,000 psi
Lower than stone, brick, Portland cement (See chart, right)

Modulus of Rupture

Typically 400-600;
Lower than stone, brick, Portland cement (See chart, right)


Fineness specifications for traditional cements became increasingly stringent over time. Today there is no fineness requirement, only a minimum 28-day strength requirement. Typically a minimum of 70% passes a 200 mesh sieve.

Tensile Strength

Traditional Specifications required a minimum of:
38-70 psi @ 24 hours (neat)
87-134 psi @ 7 days (neat)
162-237 psi @ 28 days (neat)
34-50 psi @ 7 days (1:2 w/sand)
75-80 psi @ 28 days (1:2 w/sand)
There is no current requirement.

Adhesive Bond Strength

Neat Cement: 68 psi
1:1 Cement/Sand: 40 psi
1:2 Cement/Sand24 psi

Neat Cement: 27.5 psi
1:1 Cement/Sand: 20.8 psi
1:2 Cement/Sand12.0 psi

NOTE: These values are higher than results for  lime and Portland cement.

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Plainville, CT 06062 USA

Phone: (860) 747-2220 or (800) 341-6621

FAX: (860) 747-2280

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Rosendale Natural Cement Products®
is a registered trademark of Edison Coatings, Inc.

Rosendale Natural Cement Products® are manufactured in the United States of America from 100% American Natural Cement. This is authentic historic material, extracted from historic sources, as originally used in construction of thousands of American and Canadian buildings and structures in the 19th and 20th Centuries. Rosendale 10C Natural Cement and Quick Setting Natural Cement conform to the requirements of ASTM C10/10M-14.

Translantic Natural Cements(TM) are manufactured in the United States of America from USA and globally-sourced components. Translantic Natural Cement conforms to the requirements for Quick-Setting Natural Cement in ASTM C10/10M-14.

Accept No Substitutes!


Edison Coatings, Inc. makes no warranties, express or implied, as to the accuracy or completeness of any of the information contained herein. This publication is offered on a complimentary basis as a service to potential customers or specifiers. While every effort has been made to include complete and accurate information, based on data and information believed to be reliable, it is the sole responsibility of the user to determine its suitability for his own intended use and purposes. Nothing contained herein shall be construed as a warranty or guarantee of any product, process or any other recommendation stated herein. Edison Coatings, Inc. assumes no responsibility for advice given, results obtained, or for any damages whether incidental or consequential, which may be incurred as a direct or indirect result of the use of this information. By proceeding to use this information, user acknowledges and agrees that he is doing so at his own risk, and user indemnifies and holds Edison Coatings harmless against any liabilities, costs or expenses resulting therefrom. Product data and formulations are subject to change without prior notice. All product sales are further governed by the Edison Coatings, Inc. CONDITIONS OF SALE.

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