TESTS ON MORTAR

The following tests are conducted on the prepared mortars to ensure their quality:

1. Crushing Test                                                                        

2. Tensile Strength Test

3. Adhesive Test.

1. Crushing Test:

This test is carried out on a brick work with the mortar. This brick work is

crushed in a compression testing machine and the load is noted down. Then the crushing strength is obtained as load divided by cross-sectional area.

2. Tensile Strength Test:

The mortar prepared is placed in a mould of bricket which has central cross-sectional area as 38 mm × 38 mm. After curing the briquette [Fig. 2.3] is pulled under the grips of tensile testing machine. The ultimate load noted. Then the tensile strength of mortar  is load divided by the

central cross-sectional area.

3. Adhesive Test:

 Two bricks are joined together with mortar to be tested as shown in Fig. 2.4. The upper brick is suspended from an overhead support. A board is hung from the lower brick. Then weights are added to the board till the bricks separate. The adhesive strength is the load divided by area of contact.