black ash mortar

black ash mortar, black mortar

A mixture of high-calcium lime, water, and ashes or clinker which relies on its pozzolanic properties for its hard set.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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As a result, black ash mortars show uniaxial compressive strength values > 6 MPa after 90 days of curing under ambient air conditions [13].