High Cement Content Problems Mahopac 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

Ajo Home & Lumber Depot Llc
(212) 749-3632
610 Columbus Ave
New York, NY
Volko Supply Co Inc
(516) 408-3693
205 Herricks Rd
New Hyde Park, NY
New Star Building Supplies Inc
(718) 488-9820
185 Concord St
Brooklyn, NY
Beckerle Lumber Supply Co Inc
(845) 942-1492
59 Westside Ave
Haverstraw, NY
Silver Stones
(718) 592-1697
9015 Queens Blvd
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Mahopac Railroad Tie Corp
(845) 628-8111
911 Route 6
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Ed Herrington Inc
(518) 325-3131
312 White Hill Ln
Hillsdale, NY
Belknap Lumber Inc
(607) 729-1583
7 Belknap Ave
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Myles F Kelly
(631) 752-0704
2099 New Hwy
Farmingdale, NY
Kwok and Jie Inc
(212) 431-5558
123 Chrystie St
New York, 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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