High Cement Content Problems Freeport 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

Malatesta Paladino Inc
(718) 523-5656
13919 109th Ave
Jamaica, NY
Sanyo Enterprises Usa Inc
(718) 846-8100
11617 Sutphin Blvd
Jamaica, NY
Kabinet King
(718) 291-5023
17605 Linden Blvd
Jamaica, NY
Capstone Construction
(631) 784-7701
775 Park Ave
Huntington, NY
Obama Inc
(718) 321-0380
13225 Maple Ave
Flushing, NY
Rapid Masonry Restoration
(718) 424-8304
7906 37th Ave
Jackson Heights, NY
Mr B Home Repairs
(718) 206-4900
10640 Guy R Brewer Blvd
Jamaica, NY
Alpha Design Corp
(718) 291-5023
17605 Linden Blvd
Jamaica, NY
Agl Land Design Inc
(631) 673-2854
19 Duncan Ln
Huntington, NY
Anastasio Inc
(631) 499-1777
1633 E Jericho Tpke
Huntington, 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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