High Cement Content Problems Riverhead 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

Canastota Concrete Company Inc
(315) 697-3900
145 Barlow St
Canastota, NY
Hep Sales
(315) 331-6710
6592 E Union St
Newark, NY
Tracy B H & Sons Inc
(315) 637-3174
550 E Genesee St
Fayetteville, NY
Grossman's Bargain Outlet
(518) 274-0182
163 Troy Schenectady Rd
Watervliet, NY
Conmet Depot
(212) 945-0990
2 S End Ave
New York, NY
Home Depot the
(718) 862-9800
1806 E Gun Hill Rd
Bronx, NY
Home Depot the
(516) 997-9595
86 Jericho Tpke
Westbury, NY
Home Depot the
(516) 546-6280
160 E Sunrise Hwy Bldg B
Freeport, NY
Lemle & Wolff Building Mgt
(212) 304-3720
432 W 204th St
New York, NY
Universal Forest Products Inc
(716) 496-5484
13989 E Schutt Rd
Chaffee, 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...

Click here to read full article from Masonry Construction