Consistency of mortar is tested by using a standard cone apparatus. In this test a cone weighing 300 g is allowed to fall from a specified height to penetrate through the mortar. The depth of penetration of the cone is called its consistency value. It is expressed in mm. To read the test procedure click … Read more
What is Consistency? The term consistency of masonry mortar means its property of mobility or fluidity. Consistency means the property of holding together all the ingredients without leading to segregation of mortar. It generally ranges from stiff to fluid. The working consistency of the mortar is usually judged by the worker during application. What are … Read more
Cement mortar is prepared by mixing cement and sand in dry state and then adding required amount of water in it and mixing them thoroughly. The following procedure should be followed to prepare cement mortar by hand mixing. Procedure for Hand Mixing of Cement Mortar Take one bag of cement, which has a volume of … Read more
Difference Between Mortar & Plaster Mortars are used in masonry for joining stones, bricks, blocks etc. and plasters are used for rendering on the outside and inside of walls. The differences between mortar and plaster lie in the capacity of plasters to take better finish, which depend to a very large extent on the type … Read more
In order to check the quality of masonry mortar, we have to conduct different tests on mortar. The quality and accuracy of test result is dependent upon the type of sample tested. Therefore it is required to follow some guidelines at the time of sampling. Samples of masonry mortar are obtained in equal increments and … Read more
The sand is used in mortar for the following purposes Bulk It does not increase the strength of mortar. But it acts as adulterant. Hence the bulk volume of mortar is increased which results in reduction of cost Setting If building material is fat lime, the carbon dioxide is absorbed through the voids of sand … Read more
Following are the properties of a good mortar: Properties of Good Mortar It should be capable of developing good adhesion with the building units such as bricks, stones etc. It should be capable of developing the designed stresses. It should be capable of resisting penetration of rain water. It should be cheap. It should be … Read more
Following precautions are to be taken while making use of mortar Consumption of Mortar After preparation, the mortar should be consumed as early as possible. The lime mortar should be consumed within 36 hours after its preparation and it should be kept wet or damp. The cement mortar should be consumed within 30 minutes after … Read more
Objective To determine the consistency of masonry mortar Apparatus Standard Cone Apparatus having following parts and dimensions Penetrating Cone Conical Container Weight = 300 g,Height = 150 mm, Base dia = 75 mm Top dia=150 mm,Height = 180 mm Tamping Rod Procedure Fill the conical container with the mortar to a level that is 1 … Read more
From durability point of view, the grade of masonry mortar to be used for a given work is primarily dependent upon the following two factors. Loading condition Exposure condition Considering the above two factors the suitable grade of masonry mortar to be used for different works is given in the following table. Generally cement mortar … Read more