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

Lakeside Building Products Inc
(585) 637-4710
5954 Brockport Spencerpor
Brockport, NY
North Main Lumber
(607) 324-2254
1080 W Main St
Hornell, NY
Tri Star Building Supply
(718) 488-9822
185 Concord St
Brooklyn, NY
Petrillo Bldrs Supl Co
(914) 664-5155
1 Edison Ave
Mount Vernon, NY
Clay Lumber
(718) 389-5945
15 Clay St
Brooklyn, NY
Mahopac Railroad Tie Corp
(845) 628-8111
911 Route 6
Mahopac, NY
Covered Bridge Gifts & Antiques
(607) 363-7712
Main
Downsville, NY
Building Specialties
(585) 426-3100
200 Pixley Rd
Rochester, NY
Lowe's Home Improvement Warehouse of Amsterdam
(518) 954-2400
4825 State Highway 30
Amsterdam, NY
K & S Lumber Co
(315) 245-0255
Camden Mc Connellsvi
Camden, 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...

Click here to read full article from Masonry Construction

Related Articles
- Home Siding Tips Mahopac NY
After installing window and door trim, either make flashing using a sheet metal brake or apply flashing pre-bent to the correct trim size. Nail your flashing to the wall, not to the trim, because if you put holes in the flashing, you've defeated its purpose.
- Galvanized Wall Ties Mahopac NY
- Fibers for Permeability Mahopac NY
- Incorrect Testing Practices Mahopac NY
- Eliminating Swirls in Precast Panels Mahopac NY
- Galvanized Wall Ties Mahopac NY
- Energy-Efficient Product Reviews Mahopac NY
- Flashing in Siding Installations Mahopac NY
- Flue Liners for Masonry Chimneys Mahopac NY
- Handling Siding Materials Mahopac NY