High Cement Content Problems Amsterdam 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

Cornerstone Building Products
(516) 935-3317
21 Midland Ave
Hicksville, NY
Garber Bldg Supls Inc
(718) 447-2122
98 Greenfield Ave
Staten Island, NY
Bayside Mason
(718) 224-3733
21011 48th Ave
Oakland Gardens, NY
Jenco Ready Mix Concrete
(631) 243-5757
45 S 4th St Ste 1
Bay Shore, NY
Abedin Building Supplies
(718) 638-7760
1114 Bedford Ave
Brooklyn, NY
Lowe's Home Improvement Warehouse of Amsterdam
(518) 954-2400
4825 State Highway 30
Amsterdam, NY
Ellenville Lmbr Co Inc
(845) 647-7700
211 Canal St
Ellenville, NY
Silver Screen Post Production
(212) 367-3711
78 5th Ave
New York, NY
Giarrusso Bldg Supls
(315) 437-2166
6163 Eastern Ave
Syracuse, NY
Raby's Ace Home Ctr
(315) 342-9663
247 Washington Blvd
Oswego, 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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