High Cement Content Problems Arlington VA

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.

Manganaro Mid Atlantic
(703) 243-0026
1301 N Troy St
Arlington, VA
 
Williams John T Assoc Inc
(703) 892-2929
1611 S Walter Reed Dr Ste 102
Arlington, VA
 
Winston'S Of Northern Virginia
(703) 379-5006
2701 S Oakland St Ste C
Arlington, VA
 
A Step In Time Chimney Cleaners & Repair Is 800-Fireman
(703) 237-4545
6700 Lee Hwy
Arlington, VA
 
Jeff L. Cadle Masonry
(703) 698-1390
2811 W.Glen Drive
Falls Church, VA
Services
We specialize in masonry repairs including brick and stone as well as mortar matching. We also specialize in chimney repairs and all other types of masonry repairs.

Winston'S Air Duct Cleaning Inc
(703) 379-5006
4800 King St
Arlington, VA
 
Dawson'S Brickwork
(703) 528-6787
1324 N Stuart St
Arlington, VA
 
O Reilly Masonry
(703) 841-7233
5201 5th St N
Arlington, VA
 
Boyd D L
(703) 241-2060
6700 Lee Hwy
Arlington, VA
 
Leon's Masonry Services
(877) 259-0642
8104 Carrick Lane
Springfield, VA
 

High Cement Content Problems

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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