SikaGrout®-510 CS High Flow

• CE marking and declaration of performance based on EN 1504-3: Products and systems for the protection and repair of concrete structures — Structural and non-structural repair.
• CE marking and declaration of performance based on EN 1504-6: Products and systems for the protection and repair of concrete structures — Anchoring reinforcing steel bar.

Cement, selected fillers and aggregates, supplementary cementitious materials (SCMs) and special synergistic additives

9 months

Store properly in dry conditions in undamaged and unopened original sealed packaging. 

~2150 kg/m³

D_max: ~0.8 mm

Adjusting the water content alters the consistency, allowing the Product to achieve the following consistencies: 

NOTE: Assessment made at +20^oC. 

NOTE: Maximum dry load ~131.5 kN; maximum wet load ~140.0 kN. 

NOTE: Tensile adhesion / bond strength determined on a reference concrete MC (0.40) slab made comprising of aggregates with a maximum size between 8 and 12 mm, with a sandblasted surface and saturated surface dry. SikaGrout®-510 CS High Flow applied at 10 mm. 

NOTE: Measured bond strength after 50 cycles. 

Varying consistencies are achievable using the following water contents per 25 kg bag:

NOTE: The maximum water content shall be 4.8 litres per 25 kg bag. 

10 mm minimum / 100 mm maximum

+5°C minimum / +35°C maximum

+5°C minimum / +35°C maximum

+5°C minimum / +35°C maximum

~60 minutes

~260 minutes

~290 minutes

25 kg yields ~13.25 litres of grout

Concrete, Mortar and Stone:

Surfaces must be sound, clean, free from ice, oils, grease, standing water and any loose or friable particles and any other surface contaminants. The concrete 'pull-off' bond (tensile adhesion) strength should be >1.0 N/mm².

Steel and Iron:

Clean, free from oil or grease, rust and scale, etc.

Substrate Preparation:

The substrate should be prepared by suitable mechanical preparation techniques such as high pressure water jetting, breakers, blastcleaning, scabblers, etc. The concrete substrates should be pre-soaked with clean water continuously for 2 to 6 hours to ensure a saturated surface dry (SSD) condition throughout the operation. Immediately before pouring the grout, remove all excess or standing water from within any formwork, cavities or pockets.

Shutter / Formwork:

All formwork should be of adequate strength, treated with release agent and sealed to prevent leakage. Sealing can be achieved by using Sikaflex® -11FC+ sealant beneath or around formwork and between joints. Ensure formwork includes outlets for extraction of the pre-soaking water. A header box / hopper should be constructed on one side of the formwork so that a grout head of 150 - 200 mm can be maintained during the grouting operation.

Measure the appropriate amount of clean, potable water (if necessary, warm water to achieve a temperature between +15 and +20^oC) to achieve the desired grout consistency given in the aforementioned table and pour into a clean, suitable mixing vessel for each complete unit of SikaGrout®-510 CS High Flow to be used. Flexible mixing vessels (e.g. 'gorilla tubs') are unsuitable - rigid vessels shall be used. Slowly add the powder to the water whilst continually mixing. Mechanical mixing should be carried out using either a high torque, slow speed (i.e. 200 to 500 rpm) drill with an appropriate grout stirrer, or a grout mixer set on slow speed for small mixes. The use of a drill and paddle (in most circumstances) is only suitable for mixing one bag at a time. For larger mixes, use forced action type mixers (NOT concrete tumble mixers which do NOT apply sufficient shear, NOR high speed or colloidal mixers, as these may cause thixotropy, leading to loss of flow). This Product is NOT suitable for mixing by hand. If using a drill and paddle, keep the mixing head in the material - refrain from lifting in and out, as this will introduce air. It is of utmost importance that the Product is mixed thoroughly to the desired consistency (i.e. for at least 3 minutes). Fresh grout (particularly at the highest water level) should be allowed to stand until the air entrapped by mixing has been released before application (typically 1 to 2 minutes).

Immediately after mixing, and after the Product has been allowed to de-gas (which typically takes between 1 and 2 minutes), pour the mixed grout from one side of the formwork through the header box / hopper, ensuring continuous grout flow during the complete grouting operation to avoid trapping air. Keep header boxes / hoppers topped up for the duration of the application. Continue until the grout appears at the opposite side of the grouting area to the header box / hopper. Use steel banding or chains to assist flow where necessary. Do NOT disturb once grouting has been completed. For large volume placement, grout mixers and pumps are recommended (e.g. Putzmeister SP11 TMR). 

After the grout has initially hardened, remove formwork and trim edges while concrete is ‘green’. Placed grout, which is exposed, should be cured in accordance with good concrete practice. Protect the fresh material from premature drying using an approved curing method (e.g. curing compound such as Sikafloor® ProSeal, moist geotextile membrane, hessian, polythene sheet, under water, etc.). In cold weather, apply insulating blankets or heated curing blankets to protect the Product and maintain a satisfactory constant temperature.

Clean all tools and application equipment with water immediately after use. Hardened / cured material can only be mechanically removed.