High Cement Content Problems New Paltz 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

Brewster Transit-Mix Corp
(845) 279-3738
Fields Ln
Brewster, NY
Kamco Supply Corp
(516) 935-8660
301 Robbins Ln
Syosset, NY
Chinatown Building Supply Inc
(212) 431-0099
72 Walker St
New York, NY
Erie Materials-Binghamton Inc
(607) 773-8006
33 Phelps St
Binghamton, NY
County Fence Co Inc
(914) 667-8059
143 S MacQuesten Pkwy
Mount Vernon, NY
Screens Dreams
(347) 406-8565
2946 Fulton St
Brooklyn, NY
84 Lumber Co
(607) 689-0485
1000 State Route 434
Owego, NY
Ilion Lumber Company
(315) 895-7437
161 W Main St
Ilion, NY
Tri-State Brick & Bldg Material Inc
(212) 366-0339
151 W 25th St
New York, NY
Riverside Truss
(518) 494-2412

Riparius, 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 New Paltz 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.
- Eliminating Swirls in Precast Panels New Paltz NY
- Incorrect Testing Practices New Paltz NY
- Galvanized Wall Ties New Paltz NY
- Home Siding Tips New Paltz NY
- Flue Liners for Masonry Chimneys New Paltz NY
- Galvanized Wall Ties New Paltz NY
- Handling Siding Materials New Paltz NY
- Energy-Efficient Product Reviews New Paltz NY
- Fibers for Permeability New Paltz NY