High Cement Content Problems Gloversville 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

Bargain City Building Supply Corp.
(315) 463-2300
3614 Burnet Ave
East Syracuse, NY
Innov Architectural Metals
(718) 349-0295
5 Sutton St
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Scranton's Thruway Builders Supls Corp
(716) 625-9444
3360 Walden Ave
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Kings Material Co Inc
(718) 438-5232
3707 15th Ave
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Sunrise Lumber Inc
(718) 680-7335
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Dinaso & Sons Bldg Supls
(718) 948-1929
520 Industrial Loop
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84 Lumber Co
(716) 695-0449
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(315) 245-1902
State Route 49
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J R Builders Inc
(718) 357-3652
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Lowe's Home Improvement Warehouse of Utica
(315) 793-3812
710 Horatio St
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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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