The addition of Cempatch SBR will also significantly increase resistance to chemical attack, abrasion and freeze-thaw cycling.
Cempatch SBR applications include:
25 and 200 litre containers.
Protect from frost and store under dry warehouse conditions at a temperature between 10°C and 30°C.
12 months in unopened containers and stored under good conditions.
Substrates should be mechanically prepared by bush hammering, grit blasting, etc., to produce a clean, exposed aggregate finish, free from dust, oil, grease, paint, laitance, etc., in order to provide a ‘key’ for the Cempatch SBR. The clean, sound surface should be dampened with water prior to application of the bonding primer, modified mortar or render. All excess water must be removed prior to application.
A coat of 3:1:1 OPC : Cempatch SBR : water grouting slurry should be applied to the pre-dampened surface with a mediumstiff brush.
Systems to be bonded must be placed whilst the primer remains tacky. The priming coat must be worked into the surface with a stiff brush or broom, ensuring uniform wetting of the substrate.
If the primer is allowed to dry, apply a second coat. Do not redampen dried primer.
Once mixing is complete, apply the mix onto the primed area and work well into the substrate. For levelling and consolidating, tamp with a screed bar and then rub with a plastic float. A smooth finish is achieved by light trowelling with a straightedged steel trowel.
If greater depths are required on both vertical and overhead applications, this may be carried out by building up in layers with the surface of the intermediate layer being scratch -keyed and cured prior to the further application of the slurry primer and mortar when the material has set up.
All equipment should be cleaned with water immediately after use.
Cempatch SBR applications are cement based and in common with all such materials, must be cured in accordance with good concrete practice. The use of polythene sheeting is recommended for a minimum 7 days to prevent rapid drying out. Alternatively a curing aid such as Setseal 6 can be used (see appropriate technical data sheets).
The system should be allowed to cure for a minimum 7 days at 20°C before subjecting to full service conditions.
Cempatch SBR has a working time of approximately 20 minutes at 20°C. Never leave Cempatch SBR mixes to stand for any length of time before laying as this will considerably shorten the working time
Never leave Cempatch SBR mixes to stand for any length of time before laying as this will considerably shorten the working time.0.
Do not place when the substrate temperature is below 5°C or when the ambient temperature is 5°C and falling.
HEALTH AND SAFETY
Consult the appropriate Material Safety Data Sheets prior to using Cempatch SBR.
This data sheet is for general guidance purposes only and may contain information that is inappropriate for certain conditions of use. Accordingly, all recommendations and suggestions are made without guarantee. Further information is available from our Technical Department.