While making the mortar, the ratio can be conveniently controlled by creating a ditch in the container with mortar. Always use clean materials, pollution reduces the quality of the mortar. First, the dry substances – cement, sand and lime – are properly mixed with each other. You already need that tool for the masonry itself, and it can also be used for the mixing. If you do not have a mixer, you can also use the trowel to mix the mortar. To make mortar, you need a masonry tub, a bucket, and – certainly in larger quantities – preferably a mixer. In general, well-made mortar sticks to a wall and does not bleed. But too much water means the bonding force decreases, and after drying there may occur cracks due to shrinkage. Adding more water makes the mortar more liquid and easier to apply. The correct ratio for cement mortar must therefore be determined on the basis of the type of brick and the location of the building (inside or outside). While for the same job, but with much softer limestone, a completely different mixing ratio is advised, namely 1 part cement, 9 parts sand, 2 parts lime. For the masonry of exterior walls with hard brick one often uses 1 part cement, 3.5 parts sand, 0.25 part lime. The exact composition, however, is often a matter of knowledge and experience, and is in part determined by the application for which the mortar is used. But to make concrete, the cement is mixed with less sand and more gravel.įor mortar the standard ratio is: 1 part cement and 3 parts sand. By mixing it with other substances, in particular masonry sand or lime, we can make mortar which can be used for laying brick walls, etc. Cement itself is a finely grounded bonding agent (consisting mainly of calciumhydrogensilicate), which, together with water, forms a hard plastic mass, both in open air or in water.
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