Masonry mortar - CT-mortar

Masonry mortar

Binding material :

Used in masonry mortar cementing material with cement and lime.
The same as the concrete cement varieties choice. Cement mark should be 4-5 times, mortar strength grade of cement label is too high, will lead to insufficient dosage of cement and lead to poor water retention. Hydrated lime and lime paste is not only as a gelled material, more important is to make the water retention of mortar with good.

Aggregate :

Fine aggregate mainly natural sand, slurry preparation by is called the ordinary mortar. Sand clay content should be not greater than 5%; Strength grade is less than the m2.5, clay content should be not greater than 10%. The maximum particle size of sand should be less than a quarter of the mortar thickness - 1/5, is generally not more than 2.5 mm. As groove seam and plastering mortar, maximum particle size of less than 1.25 mm, the thickness of sand degree of cement consumption, impact on the workability, strength and shrinkage.

Detailed Message :

Including mortar mix proportion, consistency of mortar, water retention of mortar, mortar stratification and mortar strength grade. Mortar mix proportion - based on mortar strength grade and other performance requirements and determine the ratio between the various ingredients of mortar. In order to weight ratio and volume than said. Mortar consistency - refers to the weight or exerting force, the flow properties of new mixing mortar. In a standard cone free sinking depth of falling into a mortar. Mortar water retention - refers to the storage, transportation and use process, new mixing mortar's ability to maintain moisture in each layer mortar uniform, in terms of degree of mortar layer. Mortar stratification degree - refers to the new mortar mixing mortar consistency with the same batch of static storage after which time the measured difference for the bottom of the mortar consistency. Mortar strength grade -- refers to using a standard specimen (70.7 x 70.7 x 70.7 mm cube) of a set of 6 pieces, with a standard method for curing 28 days, using a standard method for determining the average compressive strength (MPa). According to the compressive strength of masonry mortar is divided into mi5, M10 and M7.5, M5.0 and M2.5 five strength grade (M20) off the new specifications. Mortar strength in addition to the affected by the composition material and compounding ratio of mortar itself, also related to the building of grass-roots water absorption performance.

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