Even if a crack is not leaking now, eventually water might find a way through it. All equipment that comes in contact with the chemicals must be absolutely dry. Viscosities from very low to paste. The resulting resin product will heal the crack and provide a surface seal to contain the material to follow. Flushing helps to detect blind drill holes, or lost continuity of a crack.
Gels may swell again later in a moist environment. Even worse, since the conic shaped plastic packer does never really fit the drill hole, the pressure created by the installed packer will be located towards the opening, which results in concrete spalling and packer blow outs. Basic product knowledge helps users and specifiers to reduce possible problems. This kit includes our advanced Emecole 121 Premium - Fast Curing Epoxy Low Viscosity and all the components necessary to complete the task. The depth of the drill hole intersecting the crack should be somewhere close to the middle of structure, if possible. Alternate positioning from left side to right side as you move along the crack where possible.
Small Job Kits - QuickFix Floor Repair. Crack movement usually occurs in cycles. Loose injection packers have been known to slip out of holes. Resin is contained in the cartridge and hardener is contained in the nozzle. Twelve years ago I used this same product on another wall and it still holds to this day. Material cures and swells in the presence of moisture or water thereby creating a compression seal.
Recommended Products: Complete line of packers: S-Type, B-Type, custom sizes, Hammer-in packers, surface ports, specialty packers - Surface port injection is done at lower injection pressures of 30 to 500psi because it is usually done in dry environments where surface ports can be attached easily with epoxy adhesive. Always remember that polyurethanes are water reactive. Moving cracks and expansion joints should be injected with SealBoss 1570 Flexible Water-Stop. The resin also fills the space between the structure and the soil thus creating a 'curtain' that functions as a waterproof membrane. Continue in this fashion until the crack is completely filled.
Membrane failure is a common cause of below grade water leaks. The uneven grip of the conic plastic packers currently on the market cannot compete with the even grip of a true metal-rubber type port that evenly fits and expands towards the surrounding concrete. Water displaced from the crack by the resin 2. Do not seal exterior slabs on grade. It's been about 4 hours now, and the foam that came out of the cracks is nice and dense and looks pretty darn tough.
It is recommended to inject at a time when the cracks or joints are at the widest aspect of their moving cycle. The components are completely separated before mixing in the static mixer, therefore the pump and pressure hoses require less cleaning maintenance. Any resin spilled must be cleaned immediately before the resin sets. High pressure injection through mechanical packers opens a new dimension of possibilities to solve joint and crack related problems. Cured material — Chip or grind off surface. It is advisable to use a high quality rotary hammer. I recently used it to repair a leaking crack in one of my concrete basement walls with no issues.
I'm waiting for Spring thaw and all the water that comes with it. High pressure injection is characterized by the use of mechanical packers. Grout material shall have the capacity to expand upon contact with water to a volume of 30 to 40 times. Rule of thumb: 1 foot The wider the crack, the further apart are the drill holes. Protection, Cleaning and Safety 1 Following a complete injection of all mechanical packers to refusal and where the visible leakage has been completely eradicated, remove all injection packers. There are some standard procedures that can be followed on most jobs.
Since the low pressure injection techniques that utilize 'glue on' surface ports are more commonly known, the following introduction focuses on the high pressure injection in conjunction with mechanical packers. This curtain injection can be done from the inside negative side by drilling through the structure in a pattern and injecting the resin from the inside out into the soil or the space between the structure and the soil. If a pressure gauge is available, the pressure should be monitored and kept in a range that is just enough to allow sufficient flow of material. Not for use in actively leaking cracks. Quite the opposite is true with mechanical packers. Depending on the job, injection can be done with low pressure and high pressure systems. The viscosity of the epoxy resin stays low during the injection process, resulting in much lower injection pressures.