Features
Hydro Plug 70 is supplied as a ready-to-use blend of dry powders that produce a highly consistent, rapid-setting mortar. The material
consists of a blend of cements, graded aggregates, specialb fillers, and chemical additives that control the rate of set and minimize the
risk of thermal cracking. The initial set time is approximately one minute.
Design Criteria
Hydro Plug 70 can be applied to horizontal, vertical, or overhead surfaces at a wide range of
thicknesses. The volume of mixed material used in a single application is restricted to that which
can be applied by trowel or gloved hand. Thicker sections can be built up in layers.
Typical Properties
Compressive strength (BS 6319 Pt 2: 1983): 5 N/mm² @ 2 hours & 32 N/mm² @ 28 days Initial set time: Approximately 1 minute Note: Set times will be extended when mixed at lower temperatures.
Specification
The water-stopping mortar shall be Hydro Plug 70, a single-component cement-based blend of powders that require only the site
addition of clean water. It must be chloride-free and formulated to prevent high exotherm and minimize thermal cracking.
Instructions for Use
Preparation
Areas to be patched should be cut back to a depth of 15 mm to ensure a good mechanical key. Feather edges must be avoided. The
surface should be brushed clean to remove loose material, dust, and laitance Grease, slime, or mold growth should be removed by steam cleaning or highpressure water jetting. For light oil or grease contamination,
a proprietary degreasing agent should be used. To seal leaks, crack openings must be chased out to approximately 20 mm square,
ensuring that all loose material and debris are removed.
Mixing
Add Hydro Plug 70 to clean water in the proportion of one part water to three parts Hydro Plug 70 (by volume). Mix to a stiff
consistency using a trowel or gloved hand in a suitable mixing drum or bucket. Prepare only the quantity of mortar that can be placed
within the prescribed set time.
Low Temperature Working
In cold conditions (down to 1°C), use warm water (up to 20°C) to accelerate strength development. Do not apply when the substrate
and/or air temperature is 1°C and falling. Application may proceed at 1°C static temperature or at 1°C and rising.
High Temperature Working
At ambient temperatures above 35°C, store the material in the shade and use cooler water (down to 20°C) for mixing.
Cleaning
Remove Hydro Plug 70 from tools, equipment, and mixers with clean water prior to initial set. Cured material can only be removedmechanically.
Limitations
Do not use Hydro Plug 70 when the temperature is below 1°C and falling. Consult the local Carbolink office if there are any doubts
about application or substrate conditions.
