Mapel Planicrete SP

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Products Details of Mapei Planicrete SP

USES: Mapel Planicrete SP Multipurpose Latex Additive

For the preparation of high performance mortar, screeds and renders.

Typical application

• • Screeds and levelling compounds with high-resistance for interior and exterior    use.
  • Cement renders for interior and exterior.
  • Cement slurry with high adhesion for bonding new screeds on to existing              screeds and concrete.
  • Cement-mortar adhesive for exterior and interior bonding of ceramic tiles on          walls and floors.
  • Modifying cement mortars that have to be applied in thin layers.

TECHNICAL CHARACTERISTICS

Mapel Planicrete SP is a greenish white, multipurpose synthetic-rubber latex to be mixed before use with Portland cement and aggregate (having correct granulometry) to obtain mortars with extremely high bonding strength. After setting, such mortars show mechanical resistance to shocks and vibrations, resistance to water-absorption, point load, freeze-thaw cycles, temperature changes, aging and to diluted chemical agents.

PRECAUTIONS

• •  Do not use Mapel Planicrete SP on walls and floors subject to extreme flexing or vibrations (wood board, chipboard, asbestos board and wood agglomerates etc.) for bonding tiles. Use Kerabond+Isolastic, Adesilex P22 or Keralastic.
  • Do not use Planicrete SP as a waterproof membrane (use Mapelastic or Aquaflex).
  • Do not use Planicrete SP neat as a slurry: always mix with Portland cement.
  • Do not apply renders and screeds to the Mapel Planicrete SP slurry or previous screeds after they have completely dried (in order to avoid deboning).
  • Do not mix Mapel Planicrete SP with hydrated or hydraulic lime.
  • Do not use as strong chemical resistant mortar. May be used for substrate preparation and levelling, but once cured and dried, it must be covered with Kerapoxy mortar and grout or Mapecoat I 24.
  • Do not use Planicrete SP if the ambient temperature is lower than +5°C or higher than +35°C during application.

SETTING PROCEDURE Multipurpose Latex Additive

1. Surface preparation

• All supporting surfaces must be structurally sound, solid, clear and free from dust, oil, grease, paint, tar, wax, form release agents, laitance, loose particles or any deleterious substances and debris which act as bond barriers. Neutralize any trace of strong acid or alkali.
• Mechanically sand and scarify the substrate to remove all loose particles, loosely bonded topping, paint residue, construction debris and roughen all smooth concrete surfaces.
• All new concrete must be at least 28 days old and completely cured. The surface of such concrete must be wood floated or broom finished.
• Where installation is made over radiant heated slabs, turn off the heating system at least 48 hours before work begins. Keep the heating system turned off during installation and for a period of at least 72 hours after completion of the work. Use an auxiliary heating device to maintain the temperature in the area at a workable level.
• Keep the surface of the concrete substrate continuously moistened for at least 24 hours prior to the placement of the topping. Remove all excess water from the concrete slab, allowing the surface to become practically dry before applying the slurry coat and levelling coat.

Note

• • The quantity of sand and the aggregate size in the mortar mix may require to be increased or reduced proportionately with the overall thickness of the mortar bed to minimize shrinkage and reduce risk of bond separation from the substrate. Where thicknesses greater than 50mm are required, use a properly graded concrete mix designed to meet job requirements.
  • The quantity of Mapel Planicrete SP (or Planicrete SP + WATER solution) need to be reduced when using a coarse aggregate mortar mix or when damp sand is used.

2. Mixing

A. Typical mortar mixes for levelling coats and floor screeds.

• • Stir the Planicrete SP latex thoroughly before mixing.
  • Premix the dry materials in a separate clean container or mixer.
  • In a clean container or mixer, pour in the Planicrete SP liquid and gradually add the dry mortar mix while slowly mixing.
  • Mix thoroughly to a homogeneous, stiff workable consistency. Do not over-mix to avoid air entrapment.

B. Typical cement-mortar tile adhesive.

• • In a clean mixing pail, pour in approximately the required quantity of Mapel Planicrete SP.
  •  Add premixed cement and sand mixture while mixing slowly with a low speed mixer (approximate ly 15 0 rpm).
  • The viscosity of the paste depends on the particle size of sand used and, should it be too high or too low, can be corrected by adding more Mapel Planicrete SP or dry materials cautiously.

3. Application

A. As floor screed

• • Set gauging strips, uniformly sloped to drains, check levels and tolerances.
  • Just ahead of placing the mortar, sweep off any residual water and apply the slurry bond coat (see mixing ratio table) on to the substrate.
  • While the slurry coat is wet, spread the floor screed mix onto the floor surface between strips, using a metal straight edge. Work the mortar mixture with a steel trowel to promote a secure mechanical bond. Do not allow the slurry coat to dry partially or completely while spreading the mortar.
  • Finish the surface true and level to a tolerance in plane of ±3 mm in 3 m.

B. As wall plaster

• • One day before placing the mortar, apply the spatter-dash coat (see mixing ratio table) onto the concrete or dry scratch coat.
  • Once the spatter-dash coat has dried, apply the Mapel Planicrete SP cement and sand mortar to the required thickness using a flat-edged trowel. Work the mortar mix into the spatter-dash coat to promote a good mechanical bond.

Floor screed and Floor tiling

• Keep free from general traffic for at least 24 hours for floor screeds and at least 72 hours for floor tiling after installation.

PACKING

25 kg and 200kg drums.