SELF-LEVELING
MORTAR
The self-leveling mortar PAVILEVEL is the best solution when executing any type of leveling screed for its economic, technical and quick execution advantages.
It is a fluid mortar, which is perfectly placed and leveled by pumping due to its own rheological characteristics, without segregation and with high mechanical performance, which makes it suitable for any type of final coating.
It is especially suitable when it is placed on underfloor heating systems, due to its superior thermal conductivity compared to conventional conventional mortars, which provides an important saving of energy resources.
CHARACTERISTICS
It is a fluid mixture composed of a hydraulic binder (portland cement or others), selected aggregates and superplasticizers. Additionally, polypropylene microfibers can be included, mainly to reduce surface cracking in the plastic stage of mortars and increase resistance to abrasion, impact, fire, etc.
It is manufactured in a concrete plant by means of calibrated and correctly packed weighing equipment during the manufacturing and transport phases until construction, so that the product presents the required fluidity conditions.
Advantages over traditional solutions
Higher thermal conductivity
Speed of execution
Excellent planimetry
High mechanical resistance
Higher thermal conductivity
In comparison with the material usually used as a leveling layer, that is, conventional mortars, self-leveling mortars have a much higher thermal conductivity due to their particular composition.
This is due to the high compactness of the product and the absence of air entrained in the mass, this air is, for its insulating properties, which limits the conductive capacity of conventional materials.
The product on the right is semi-dry mortar in which at first glance it is seen as a discontinuous mass due to the large number of air voids it includes, which is precisely what prevents the heat of the radiant floor from being transmitted easily up.
The product on the left is a self-leveling mortar of high compactness and with the absence of occluded air that facilitates the thermal transfer which is obviously the best option for radiant floors.
The value of the thermal conductivity of a cement-based self-leveling mortar with a density of 2,100 kg / m3 is approximately 1.75 W / mk, while that of traditional mortars with a density of 1,800 kg / m3 is less than 0.90 W / mk
Speed of execution
The product is manufactured in a concrete plant and transported by concrete mixer truck to the construction site, once there it is pumped by a small static pump to the place where the self-leveling mortar must be placed.
The daily performance can be up to 1,000 m2 in open spaces such as industrial buildings or large commercial spaces, while in homes easily exceed 500 m2 / day.
The difference is clear compared to other solutions, in which the materials necessary for the manufacture of the mortar (sand and cement) have to be collected directly in the work, later to be mixed and elevated inside the jobsite.
Once placed the product is passable to 24 hours with what shortens the time necessary to resume work within the jobsite.
Excellent planimetry
It is a product with a high fluidity, without any segregation of mix. It is precisely this fluidity that makes the product has a high self-leveling capacity and achieve very good results in terms of planimetry.
The measurement of the fluidity is made with a mini cone and the result obtained should be between 220 mm and 260 mm.
This also limits the consumption of leveling paste and adhesives to correct the deficiencies of the support when placing the final coating.
High mechanical resistance
Being manufactured industrially in a concrete plant by calibrated weighing equipment and mixing in a concrete mixer truck, it is a totally controlled product that offers complete guarantee in terms of dosed materials.
This makes the self-leveling mortars offer high resistance to both compression and flexural strengh , which facilitate the thickness of the screed can be lower with less risk of cracking.
In addition, surface resistance, abrasion, impact, etc. are also higher in self-leveling mortars.
APPLICATION
The self-leveling mortar can be used as a leveling layer on any support, as long as it is inside buildings properly protected from drafts and other external agents that could harm the performance of the mortar.
In addition, it allows the placement of any type of final pavement, both adhered, since it has a high surface resistance, as well as floating. This makes the product more easily adaptable to each work, especially when more than one different floor coexists in it.
However, where the characteristics of the product are best used is when it is placed on radiant floor, since its high thermal conductivity compared to traditional solutions, significantly reduces energy expenditure and makes this system suitable for economic reasons and of sustainability.
PROCESS
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STEP 2
In the case of underfloor heating, the insulating sheet must be fixed to the slab and there must be no gaps between the different plates. A band of compressible material should be placed around the perimeter and measures should be taken so that the mortar does not escape between the perimeter strip and the radiant floor.
STEP 1
The product must be applied inside buildings, protected from drafts and direct sunlight. Because of this the windows should be covered with plastic.
STEP 4
The mortar will be raised inside the house by means of a pump placed at street level and there unloading the material from a concrete mixer truck.
STEP 3
The person in charge of the jobsite will indicate the height at which the mortar must remain depending on the level of the finished floor. Afterwards, some leveling tripods will be placed to fix this height.
STEP 5
Once the product is leveled, a brush and the beating bar will be passed to the mortar to remove the occluded air and leave it perfectly flat.
STEP 6
It is advisable to apply curing compound at the end of this process in order to avoid the appearance of cracks due to plastic shrinkage produced by too rapid desiccation of the mortar.
STEP 7
After 24/48 hours the product is passable and work can be resumed inside the work.
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