Batimix Mortar W-850

Description

BATIMIX Mortar W-850 is a self-leveling cementitious product, which forms over concrete substrates a smooth and uniform surface.

It is made from Portland cement, carefully-graded sand, and selected additives to enhance workability, adhesion, and waterproofing properties. It is durable, resistant to frost and heat after setting.

Main Purpose

Primary areas of application of BATIMIX Mortar W-850 include basement slab-on-grade, channels, bridges, damaged concrete, and concrete slabs such as roofs and balconies. It is also used for repairing blowholes.

Features

BATIMIX Mortar W-850 has the following characteristics:

• Ready-to-use, ensuring consistent properties of the fresh and hardened product
• Can be applied to all structurally sound pressure or non-pressure concrete faces – new or old
• High degree of adhesion/bond to the substrate
• Minimum degree of consolidation, due to the high workability level
• Extremely-low water absorption, yet increased water vapor transmission
• Improved durability with a high quality finished texture

Properties

• Appearance : powder
• Bulk density: around 1.35
• Chloride content : nil
• Grain size: 0 to 2 mm
• Water permeability after 48 hours (EN 1015-21): Less than 0.1 mL/cm²
• Average setting time (ASTM C 191): 4 to 6 hours
• Compressive strength after 28 days (ASTM C 109): Min. 35 MPa
• Flexural strength after 7 and 28 days (ASTM C 348): Min. 6 MPa
• Adhesion to substrate (EN 1015-12): Min. 0.8 MPa

Health and Safety

BATIMIX Mortar W-850 contains cement that is irritating to the eyes and skin. In case of contact, rinse immediately with plenty of water. Wear suitable gloves. For further information, kindly refer to the product's Material Safety Data Sheet.

Directions for Use

1 – Substrate preparation For optimum bonding and performance, sandblast the concrete surfaces and then remove all dust and debris by air blasting, low pressure water blasting, or brooming. Faulty concrete in the form of cracks, honeycombing, etc. must be chased out.

Prior to application, the substrate should be saturated but free of standing water (SSD condition).

2 – Product preparation A 25-kg bag of BATIMIX Mortar W-850 should be mixed with 5.5 to 7 liters of clean water. The mixing should be done with a medium-speed mechanical mixer for a minimum of 3 minutes until obtaining a consistent homogenous material.

Mix only as much material as can be used within 20 minutes and stir mixture frequently. If the mixture starts to set, do not add water, but restir to restore workability.

3 – Application Right after the end of mixing, pour slowly the BATIMIX Mortar W-850 onto the substrate in one coat according to specification. When two coats are specified, apply the second coat while the first one is still “green”.

Note – Do not apply BATIMIX Mortar W-850 to frozen substrate or when the ambient temperature is below + 5 ºC.

4 – Consumption The average consumption rates of BATIMIX Mortar W-850 vary from 18 to 22 kg/m²/10 mm thickness, depending on the type and porosity of the substrate.

5 – Curing The treated areas with BATIMIX Mortar W-850 should be kept wet for a period of 5 days and must be protected against sun, wind, and frost by covering with polythene sheeting, damp hessian, or similar.

Storage

BATIMIX Mortar W-850 should be stored in a closed and dry place. Avoid freezing and excessive temperatures. Unopened bags have a shelf life of six months when stored as recommended.

Packages

• 25 kg paper bag