Batimix Mortar W-861

Description

BATIMIX Mortar W-861 is a cementitious non-shrink and waterproof grout for filling joints smaller than 10 mm.

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

Main Purpose

BATIMIX Mortar W-861 is used to fill narrow holes and small joints less than 4mm. It is used for both interior and exterior elements. This product allows for obtaining consistent properties of the fresh and hardened mortar.

Main applications include grouting structures, such as supports beneath load-bearing units, column-based plates, anchors, dowels, and beams.

Features

BATIMIX Mortar W-861 has the following characteristics

• Spreads and clings easily on cementitious-based substrates
• High degree of adhesion/bond on the substrate
• Non-staining, offering a similar appearance to parent concrete and mortar surfaces
• High strength and flexural characteristics
• Positive expansion, thus eliminating all types of shrinkage problems and surface cracks
• Reduced level of water penetration
• Extremely-low water absorption, yet increased water vapor transmission
• Improved durability with a high quality finished texture

Properties

• Appearance : powder
• Bulk density: around 1.40
• Chloride content: nil
• Grain size: 0 to 4 mm
• Water permeability after 48 hours (EN 1015-21): Less than 0.5 mL/cm²
• Average setting time (ASTM C 191): 3.5 to 5 hours
• Compressive strength after 28 days (ASTM C 109): Min. 43 MPa
• Flexural strength after 7 and 28 days (ASTM C 348): Min. 7.2 MPa
• Adhesion to substrate (EN 1015-12): Min. 1.1 MPa

Health and Safety

BATIMIX Mortar W-861 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-861 should be mixed with 5 to 6.5 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 30 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, apply the BATIMIX Mortar W-861 onto the substrate in one coat according to the specification. When two coats are specified, apply the second coat while the first one is still “green”.

Note – Do not apply BATIMIX Mortar W-861 to frozen substrate or when the ambient temperature is below + 5ºC.

4 – Consumption The average consumption rates of BATIMIX Mortar W-861 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-861 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-861 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