High Cement Content Problems Vestal 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

Barney & Dickenson Inc
(607) 729-1536
520 Prentice Rd
Vestal, NY
Clarence Builders Supl
(716) 741-2800
8615 Roll Rd
Clarence Center, NY
Mac Lad Corp
(631) 208-0370
4195 Middle Country Rd
Calverton, NY
Atwater Builders Supl Corp
(718) 292-7740
382 E 161st St
Bronx, NY
Bradco Supply Corp
(518) 489-5200
29 Railroad Ave
Albany, NY
Lowe's of Vestal
(607) 770-4442
225 Sycamore St
Vestal, NY
Chubby Chips Material & Handle
(631) 543-2075
126 Veterans Memorial Hw
Commack, NY
Hoke Supply
(315) 858-0365
1321 Nys Route 167
Jordanville, NY
Kamco Supply Corp
(516) 681-4464
850 S Oyster Bay Rd
Hicksville, NY
Fort Way Supply Corp
(718) 238-1313
6302 Fort Hamilton Pkwy
Brooklyn, 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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