High Cement Content Problems Vestal 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

Barney & Dickenson Inc
(607) 729-1536
520 Prentice Rd
Vestal, NY
Brothers Lumber & Mill Work
(315) 384-4146
Adams Rd
Norfolk, NY
ABC Supply Co Inc
(631) 285-7710
2950 Veterans Memorial Hw
Bohemia, NY
Tri-City Highway Products
(607) 722-2967
111 Bevier St
Binghamton, NY
Rogers & Tenbrook
(585) 728-5270
Shults
Wayland, NY
Lowe's of Vestal
(607) 770-4442
225 Sycamore St
Vestal, NY
B & B Ready Mix Inc
(607) 967-4912
2474 State Highway 7
Bainbridge, NY
84 Lumber Co
(631) 581-8484
Commack Rd & Moffitt
Islip, NY
Sicilian Building Material Inc
(718) 259-9280
1662 63rd St
Brooklyn, NY
Home Depot the
(516) 542-9200
2000 Hempstead Tpke
Garden City, 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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