High Cement Content Problems Horseheads 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

84 Lumber Co
(607) 796-2641
25 Electric Pkwy
Horseheads, NY
Picarazzi Building Products
(607) 796-2973
401 Level Acres Dr
Horseheads, NY
Herzog's Home Center-Kingston Lumber Division
(845) 338-6300
Kingston Plz
Kingston, NY
Choice Building Supplies
(914) 423-1500
677 Nepperhan Ave
Yonkers, NY
Allen Roger
(716) 569-2040
7 White Dr
Frewsburg, NY
84 Lumber Co
(607) 796-4247
25 Electric Pkwy
Horseheads, NY
Chemung County Building Supplies Inc
(607) 796-5588
3269 S Main St
Horseheads, NY
Super Lumber and Building Supply
(718) 366-6789
5895 Maurice Ave
Maspeth, NY
Giarrusso Bldg Supls
(315) 437-2166
6163 Eastern Ave
Syracuse, NY
F A B C O
(315) 782-5283
22256 Fabco Rd
Watertown, 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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