SikaRep® Microcrete-3 UW

6 months from date of production if stored properly in undamaged and unopened, original sealed packaging.

• In dry conditions at temperatures between +5°C and +40°C. 
• Protect from moisture, direct sunlight and frost.

~1.30 kg/l at 27 ºC

11 - 13.5 when mixed with water (ready to pour)

*Test were conducted simulating site conditions by casting cubes under water

According to IS:2770(Part-1)-1967)

~6 N/mm² at water: powder ratio 0.18 at 0.025mm slip at 28 days (Used 12mm dia TMT bar)

Water : Powder = 0.18 to 0.19 by weight (5.4 l to 5.7 l water per 30 kg bag) dependent on the desired flow.

~250 minutes

~450 minutes

2200 kg/m3 at water: powder ratio of 0.19

• Mix powder by mechanically powered mixer or drum type concrete mixer. Ensure that the machine capacity and the number of operators are adequate to enable grouting to be carried out as a continuous operation.
• Put around 80 to 90% of required water in the mixing drum, followed by SikaRep® Microcrete-3 UW and then add the balance water.
• Mix for a minimum of 5 minutes
• Do not mix more material, which cannot be used within Pot Life. DO NOT ADD EXTRA WATER.

• The mixed material shall be placed within 20 minutes of mixing to gain full benefit of the expansion process
• Continuous material flow is required and the material should be poured or pumped through a flexible tube, minimum diameter 50mm, to the lowest point in the form. At the start of the operation, the material flow should be restricted in order to avoid any water entrapment
• The bottom of the tube may be raised as necessary to reduce any back pressure but should not be raised above the level of the material 
• SikaRep® Microcrete-3 UW may be placed in thicknesses upto 80mm in one pour when placed above water
• When placed under water, the heat sink effect in this environment permits thicknesses upto 150mm to be placed
• For thicker sections upto 200mm above water and 400mm under water, it is necessary to fill out SikaRep® Microcrete-3 UW underwater micro concrete using a clean, rounded and well graded aggregate in the size range from 2mm upto 8mm
• The quantity of aggregate added should not exceed 1 part aggregate to 1 part SikaRep® Microcrete-3 UW by weight. For such mixes a concrete mixer must be used
• Unrestrained surface area should be kept to a minimum

• Curing will not be required in intermittently or totally submerged situations. 
• When cast above water, all exposed surfaces should be thoroughly cured

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