For masonry walls when building a house, cottage, cottages mainly use lime-cement and cement mortars, and in the construction of stoves and fireplaces – clay or lime mortars, made from modern dry mortars. Depending on how many used to make the filler and binder solution can be of three types: fat (a lot of knitting), thin (much filler) and normal (ratio of sand and knitting right). Masonry must use the normal solutions (with shrinkage of 0.1-0.4 mm at 1 m) Cement is one of the most important building materials used in any building. Cement is part of many mortars. In addition, it is used in pure form during construction works and for the production of concrete and reinforced concrete.
Cements are divided on the composition of the strength of hardening, curing speed, etc. In order to determine form solution and the ratio of binder and filler, it is necessary to check the degree of adhesion on a wooden paddle (stick). Lean mixture does not stick nearly to the oar, the normal solution sticks to paddle in some places, and bold gives great adhesion to the oar. The strength of the solution depends on the strength of sand. Sand from the solid rock by 25-50% stronger than the sand of the porous rock, slag. To the solution was stable, all its components should be well Stir until smooth, so in the instructions for the preparation of dry mixes for modern masonry stipulated time mixing the solution, metered amount of water.