There are several situations in which the problem of water infiltration in underground walls and in the subsoil in general (caused by many factors: rainwater, groundwater, plant and sewage losses, etc
),
presents particular intervention difficulties resulting in a difficult solution, such as the difficulty in reaching the area that is the cause of the possible defect, when the path of water infiltration divides into various diversified branches, and many other circumstances still. In these particular cases, traditional waterproofing systems and techniques are not able to fully solve the problem, obtaining complete and satisfactory results.
The precise knowledge of the behavior of special hydro-expansive polyurethane resins and of the technical specifications that these products make available, allows the most suitable intervention protocol to be adopted in all circumstances, in order to properly graduate and distribute the necessary devices to waterproof by injection
, after careful preparation of the intervention areas, the water spills.
These special resins, produced and distributed by Azichem since 1987 in thousands of applications, are the SYNTECH HAG FLEX and SYNTECH HAG ECO.
The SYNTECH HAG technology consists in realizing, by means of the injection of polyurethane hydroexpansive resins
, a waterproof barrier in the cracked structure, grainy by “honeycomb” in concrete or simple infiltration.
Polyurethane resins are supplied in two formulations of different expansion capacity. They are injected at the identified points, detected by means of diversified injection schemes appropriate to the different contexts, through specific “flat head” metal injectors until they definitively block all the water access routes. Water infiltrations from cracks with negative thrust, formwork spacers, connections between floor and wall, rigid or expansion joints, honeycomb, through pipes, from polystyrene predalles floors, will no longer be a problem.
Products and technologies to use
Certainly decisive remediation interventions related to lateral water infiltrations are represented by special one-component hydro-expansive polyurethane resins, which can be added with an expansion accelerator, to be injected at the pre-established points in the walls through specific rubber/steel injectors.
Syntech HAG Flex
Single-component polyurethane resin (which can be mixed with an expansion accelerator – component B), permanently flexible, hydroswelling (increases its initial volume approximately tenfold), solvent-free, ideal for sealing small and large water infiltrations in concrete or solid masonry in general by injection (check beforehand that the masonry has sufficient strength to withstand the pumping pressure and the hydroswelling pressure exerted by the resins). Ideal for filling and sealing small cavities, joints and discontinuities subject to movement.
Syntech HAG Flex
Single-component polyurethane resin (which can be mixed with an expansion accelerator – component B), permanently flexible, hydroswelling (increases its initial volume approximately tenfold), solvent-free, ideal for sealing small and large water infiltrations in concrete or solid masonry in general by injection (check beforehand that the masonry has sufficient strength to withstand the pumping pressure and the hydroswelling pressure exerted by the resins). Ideal for filling and sealing small cavities, joints and discontinuities subject to movement.
Syntech HAG Eco
Single-component polyurethane resin (which can be supplemented with an expansion accelerator – component B), suitable for contact with drinking water, semi-flexible, hydroswelling (increases its initial volume approximately 20-fold), solvent-free, ideal for sealing, by injection, small and large water infiltrations in concrete or solid masonry in general. Ideal for filling large voids and cavities within masonry (check beforehand that the masonry has sufficient strength to withstand the pumping pressure and hydroswelling pressure exerted by the resins).
Syntech HAG Eco
Single-component polyurethane resin (which can be supplemented with an expansion accelerator – component B), suitable for contact with drinking water, semi-flexible, hydroswelling (increases its initial volume approximately 20-fold), solvent-free, ideal for sealing, by injection, small and large water infiltrations in concrete or solid masonry in general. Ideal for filling large voids and cavities within masonry (check beforehand that the masonry has sufficient strength to withstand the pumping pressure and hydroswelling pressure exerted by the resins).
Syntech HAG Cleaner
Specific cleaning agent for the equipment required during injection operations with water-reactive resins used to stop water infiltration in buildings. Low-toxicity oily rinsing detergent with high solvent capacity for uncured polyurethanes, designed to clean and lubricate the internal hydraulic pumping circuits of both manual and electric pumps. Replaces acetone, methylene chloride and other commonly used detergents.
Syntech HAG Cleaner
Specific cleaning agent for the equipment required during injection operations with water-reactive resins used to stop water infiltration in buildings. Low-toxicity oily rinsing detergent with high solvent capacity for uncured polyurethanes, designed to clean and lubricate the internal hydraulic pumping circuits of both manual and electric pumps. Replaces acetone, methylene chloride and other commonly used detergents.
Syntech HAG Iniettore
Rubber and steel injection packers to be inserted at cracks, fissures, voids, joints, cavities, etc. to be waterproofed using the water-expanding polyurethane resins Syntech HAG Eco and Syntech HAG Flex, specifically designed for the immediate arrest of water infiltration. Fitted with a “flat head” and non-return valve, they must be used in conjunction with Syntech HAG Connettore. Available in two different sizes: Syntech HAG Iniettore 120 = 120x13 mm; Syntech HAG Iniettore 170 = 170x16 mm.
Syntech HAG Iniettore
Rubber and steel injection packers to be inserted at cracks, fissures, voids, joints, cavities, etc. to be waterproofed using the water-expanding polyurethane resins Syntech HAG Eco and Syntech HAG Flex, specifically designed for the immediate arrest of water infiltration. Fitted with a “flat head” and non-return valve, they must be used in conjunction with Syntech HAG Connettore. Available in two different sizes: Syntech HAG Iniettore 120 = 120x13 mm; Syntech HAG Iniettore 170 = 170x16 mm.
Syntech HAG Iniettore 170
17 cm in length and 16 mm in diameter, this rubber and steel injector is to be inserted in line with the damage, cracks, loose foundations, joints, cavities and so on, then waterproofed through the use of Syntech HAG Eco and Syntech HAG Flex hydro-expansive polyurethane resins, specifically for immediately stopping water infiltration. Equipped with a "flat head" with non-return valve, it is used in conjunction with the Syntech HAG Connettore.
Syntech HAG Iniettore 170
17 cm in length and 16 mm in diameter, this rubber and steel injector is to be inserted in line with the damage, cracks, loose foundations, joints, cavities and so on, then waterproofed through the use of Syntech HAG Eco and Syntech HAG Flex hydro-expansive polyurethane resins, specifically for immediately stopping water infiltration. Equipped with a "flat head" with non-return valve, it is used in conjunction with the Syntech HAG Connettore.
Syntech HAG Connettore
Connection element between flat-head injection ports and the injection hose of manual or electric pumps used to stop water infiltration by injecting water-reactive polyurethane resins.
Syntech HAG Connettore
Connection element between flat-head injection ports and the injection hose of manual or electric pumps used to stop water infiltration by injecting water-reactive polyurethane resins.
Syntech HAG Pompa AZ-PT/B
Single-piston, self-priming, single-acting manual pump for injecting fluid polyurethane and epoxy resins. The pump delivers a maximum pressure of 100 bar. The flow rate is 1 litre in 55 cycles.
Syntech HAG Pompa AZ-PT/B
Single-piston, self-priming, single-acting manual pump for injecting fluid polyurethane and epoxy resins. The pump delivers a maximum pressure of 100 bar. The flow rate is 1 litre in 55 cycles.