SikaBond SBR Waterproof Bonding Agent and Admixture 5L
SikaBond SBR+ is a one component, water based, general purpose, styrene butadiene rubber emulsion. When diluted with water it produces a gauging solution for improving adhesion, workability and waterproofing of mortars and cementitious mixes.
- Prevents bleeding
- Low water-cement ratio
- Greatly increased flexural & tensile strength
- Good frost, abrasion resistance and resistance to water-borne salt penetration
- Resistant to mineral oils and many chemicals
- Excellent adhesion to steel and concrete
- Sticks to brick, glass, asphalt, wood, expanded polystyrene and most other building materials
- Ideal for concrete strengthening and repair, floor screeds and toppings, waterproofing and tanking
- SikaBond SBR+ is a waterproof general purpose bonding agent and mortar mixture
MIXING
Mixing procedures for topping and screeds containing Sikabond® SBR are similar to those used to conventional compositions, with gauging water partly replaced by Sikabond® SBR. However, mixing time should be minimised to limit air entrainment. Mixing should be carried out in a forced action mixer. The usual procedure is to pre-mix sand and cement in the mixer, pour in the Sikabond® SBR, mix for 1 - 3 mins, then slowly add water to the required consistency. NB: Over-addition of water causes rapid thinning of Sikabond® SBR modified mortars owing to the plasticising effect of the Sikabond® SBR. The mix design depends upon thickness and intended use. However, typical mixes for a 12 mm topping or screed are as follows:
Screed Topping
O.P.C 1 1
Moist sand 3.5 1.75
3 mm Washed Granite 0 1.75
SBR 0.2 0.2
(ie. 10 L per 50 kg of cement)
Water As required As required
All parts are by volume of uncompacted material.
