High Cement Content Problems Rochester 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

Goodwin Assocs
(585) 248-3320
PO Box 18605
Rochester, NY
Home Depot the
(585) 385-4090
750 Panorama Trl S
Rochester, NY
R 2 M Building Products Inc
(585) 241-3220
3543 Winton Pl
Rochester, NY
Mr Second's Bargain Outlet
(585) 235-7000
965 Maple St
Rochester, NY
Home Depot the
(585) 342-0970
1111 Ridge Rd E
Rochester, NY
ADS Masonry
585-698-0756
1900 university ave
rochester, NY
Home Depot the
(585) 865-1900
1250 Ridge Rd W
Rochester, NY
Domine Builders Supply
(585) 271-6330
100 E Highland Dr
Rochester, NY
Harmco Fastener Company Inc
(585) 546-1650
428 State St
Rochester, NY
Lowe's Home Improvement Warehouse of Henrietta
(585) 424-1340
2350 Marketplace Dr
Rochester, 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
- Flashing in Siding Installations Rochester NY
A constant problem that contractors see in siding installations is improper flashing or, even worse, no flashing at all. Relying on caulk alone to keep water from leaking into homes is not a good practice. Whether you're talking about wood, fiber-cement, or vinyl siding, three areas in particular can prove problematic.
- Energy-Efficient Product Reviews Rochester NY
- Incorrect Testing Practices Rochester NY
- Fibers for Permeability Rochester NY
- Home Siding Tips Rochester NY
- Flue Liners for Masonry Chimneys Rochester NY
- Galvanized Wall Ties Rochester NY
- Eliminating Swirls in Precast Panels Rochester NY
- Galvanized Wall Ties Rochester NY
- Handling Siding Materials Rochester NY