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

S & A Contractors
(908) 354-9557
207 Shelley Ave
Elizabeth, NJ
Ugolini Elio Mason Contractor
(201) 433-4304
213 Harrison Ave
Jersey City, NJ
Anton Haddad Plumbing & Heating
(201) 792-1587
15 Saddlewood Ct
Jersey City, NJ
Sanyo Enterprises Usa Inc
(718) 846-8100
11617 Sutphin Blvd
Jamaica, NY
Academic Stone Setters Inc
(718) 463-7395
2907 119th St
Flushing, NY
E C Hufnagel Landscaping Inc
(201) 869-5680
51 Broad Ave Apt 1
Fairview, NJ
Ventura Masonry
(908) 289-0658
805 E Jersey St
Elizabeth, NJ
Albanese J Construction Co Inc
(201) 659-6165
123 Oakland Ave
Jersey City, NJ
A La Marca Construction
(718) 526-7795
14402 91st Ave
Jamaica, NY
Alpha Design Corp
(718) 291-5023
17605 Linden Blvd
Jamaica, 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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