Northland Construction Supplies

Sakrete MORTAR MIX is a pre-blended mix of fine aggregate and cementitous materials. MORTAR MIX is a general purpose mortar that combines ease of mixing with consistent quality. Type N Mortar Mix. A regular strength mortar mix for laying brick, block and stone. Use for repairing damaged mortar joints.  Sold by the bag. Size: 25 kg.

Features and Benefits

• Standard mortar for general applications.
• Lay brick, block and stone in wall construction.
• Use for making repairs to mortar joints.
• Exceeds ASTM C 387 and ASTM C 270 for type N mortars.
• Just add water.

Applications

• MORTAR MIX is recommended for the construction of masonry walls using concrete block, clay brick, screen blocks, glass block and stone. MORTAR MIX is also ideal for stucco repairs and repointing old mortar joints.

Procedure

Preparation

All surfaces to be in contact with MORTAR MIX must be entirely free from oil, grease or any other foreign substances which interfere with the bond and chemical action of the material. Slick or sealed surfaces must be thoroughly roughened. The working base must be a solid foundation such as a concrete wall or a concrete slab. The base must be pre-dampened before laying masonry units in hot weather.

Mixing

Empty the entire dry contents into a wheelbarrow or onto a clean, smooth surface and mix thoroughly. Replace the portion not to be used back into the bag. Form a depression in the middle of the dry mix and add up to 3.8 litres of water per full bag. Mix thoroughly. If the mix is too stiff add more water until the desired consistency is obtained. Avoid a “soupy” mix, too much water will weaken the mortar. A workable mortar has a “buttery” texture and should slowly slide off a trowel held at a 45 degree angle. In hot weather, mix only enough mortar that can be placed in one hour. A mortar mixer is recommended for larger projects.

Placing

Mortar joints which protrude when units are laid should be cut flush, allowing to set until “thumb print hard” and then compress tooled to a concave joint using a round jointer.

Curing

Keep mortar protected from sunlight, heat or cold for 48 hours after laying.

Technical Information

The data outlined below is representative of typical values achievable under controlled laboratory conditions. Results obtained in the field may vary from those stated.

Compressive Strength
7 days 3.0 MPa (400 psi ) minimum
28 days 5.2 MPa (750 psi) minimum
Density 1856 kg/m3
Flow 100 to 115%
Air Content 15 to 18%
Meeting Standard ASTM. C 387 for Type N Mortar.
 

Yield

One 25 kg (55 lb) sack will provide enough mortar for approximately 25 standard clay bricks or 10 standard blocks with a 10 mm (3/8 inch) mortar joint.

Limitations

Adhering to recommended water additions is very important. Exceeding the maximum recommended water content per sack will result in inferior physical properties.

Concave mortar joints are recommended for all exterior applications. Other decorative joints may be used for effect but are not recommended for maximum weather tightness and durability.

Safety Precautions

MORTAR MIX contains Portland cement. Normal safety wear such as rubber gloves, dust masks and safety glasses, used to handle conventional cement-based products, should be worn. Material Safety Data Sheets are available on request.

 See Technical Information for More Details