High Cement Content Problems Hilton 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

Hua Mei Building Supply
(718) 439-8986
6116 7th Ave
Brooklyn, NY
Grossman's Bargain Outlet
(518) 462-6601
96 Columbia Tpke
Rensselaer, NY
Lowe's Home Improvement Warehouse of Williamsville
(716) 639-2500
8150 Transit Rd
Williamsville, NY
Home Depot Inc
(718) 358-9600
13135 Avery Ave
Flushing, NY
Mc Graw Hudson Construction Center
(212) 265-8390
767 5th Ave
New York, NY
ADS Masonry
585-698-0756
1900 university ave
rochester, NY
Fredrickson Builders Supply Inc
(716) 679-4500
320 Maple Ave
Cassadaga, NY
Hep Sales
(585) 394-6710
2567 Rochester Rd
Canandaigua, NY
Sanwal Technologies Inc
(716) 693-7201
4 Peuquet Pkwy
Tonawanda, NY
Curtis Lumber Co Inc
(518) 623-3281
106 River St
Warrensburg, 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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