High Cement Content Problems Jackson Heights NY

Portland cement gives a mortar added durability, high early strength, a consistent hardening rate, and high compressive and bond strengths. However, mortar with excessively high cement contents can affect water permeability and durability of the masonry.

Local Companies

E C Hufnagel Landscaping Inc
(201) 869-5680
51 Broad Ave Apt 1
Fairview, NJ
Ventura Masonry
(908) 289-0658
805 E Jersey St
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Willow Run Construction
(201) 659-7266
67 Pollock Ave
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A La Marca Construction
(718) 526-7795
14402 91st Ave
Jamaica, NY
Academic Stone Setters Inc
(718) 463-7395
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Begolli Brother Construction and Restoration
(516) 476-6166
134 maple avenue
westbury, NY
Drew Masonry
(908) 289-4024
17 James Ave
Elizabeth, NJ
Rapid Masonry Restoration
(718) 424-8304
7906 37th Ave
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Willow Snow Removal
(201) 659-7266
67 Pollock Ave
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Pezzino Nely
(718) 358-1481
2221 Parsons Blvd
Flushing, NY

Provided By:

Source: MASONRY CONSTRUCTION MAGAZINE
Publication date: December 1, 1990


Portland cement gives a mortar added durability, high early strength, a consistent hardening rate, and high compressive and bond strengths. However, mortar with excessively high cement contents can affect water permeability and durability of the masonry. Water permeability is increased for three reasons. First, mortars with high cement content have greater shrinkage and more frequent shrinkage cracks. Shrinkage cracking often takes the form of evenly spaced vertical cracks in bed joints and evenly spaced horizontal cracks in head joints. The mortar may also separate or pull away from the body of the brick at the bond interface. Although high cement content mortar itself is less permeable, water can penetrate the shrinkage cracks. The second reason that high cement content mortars may increase water permeance is that these mortars are stiff and not easily workable. Because of this, good bond may not be achieved at the time of construction. Finally, the high strength (high cement content) mortars are hard (brittle) and don't easily accommodate movement of the masonry (due to environmental changes or foundation settlement) and therefore may result in cracking of the masonry wall. Cracks make the walls more susceptible to freeze-thaw deterioration even though hi...

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