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Product Details

Epoxy Resin DH-203 Medium Viscosity

EXPLAIN

DH-203 medium viscosity is a structure reinforcing epoxy resin injection material. It is designed for packing on medium crack, detached concrete part and steel plate compressed part. Once hardened, DH-203 provides superior rust-proof and high physical strength, and therefore, is suitable to prevent rust on steel bar and to recover concrete strength.

PULPOSE

It is intended as grouting material for steel plate reinforcing and crack repairing of all types of concrete structure without vibration.

FEATURE

Because the medium viscosity epoxy resin is usually absorbed into or flows into the concrete of the base member of the structure which has air voids or is not strong enough or has cracks running through the whole length, there is no concern that its inside remains unsealed.

Its slow hardening process makes the application easy and almost no shrinkage is found when fully hardened. It has the optimum level of viscosity and fluidity for grouting work by high pressure and low pressure injectors.

The excellent adhesive strength of epoxy resin ensures that the hardened composition maintains a sufficient adhesive strength for the cement mortar, concrete and reinforcing bar etc. and does not produce de-lamination from the base member of the structure.

After epoxy resin is injected, the fully hardened composition does not create any chemical action on the reinforcing bars or concrete structure, and offers an outstanding durability by preventing corrosion.

Compared to cement mortar or concrete, it has superior mechanical strength in all respects including compressive strength, bending strength and tensile strength etc.

APPLICATION

It is used for the repairing of cracks of over 0.2mm when the measured width of a crack is larger than the allowable width in case the target member is structural member, or when the structural stability, durability, waterproof should be considered regardless of the identity of the target member. Applications are as follows.

Repair and reinforcement of cracks in Pc plate, concrete molding products

Grouting reinforcement of aged, weakened parts of concrete

Repair and reinforcement of cracks on slab and upper plate

Grouting of loosened gap of concrete plastering mortar and tile etc

Reinforcement of steel plate when it is used

Grouting for machinery foundation

DH-203 Dry Type Medium Viscosity Dimension Details
Classification	Main Component	Hardening Component	Remarks
Exterior Appearance	No Color	Brown Liquid	-
Mixing Rate	2	1	Weight Ratio
Specific Gravity	1.14 ± 0.1	0.99 ± 0.1	23±0.5℃
Viscosity	0 ~ 150	50 ~ 100	23±0.5℃
Mixture Viscosity	450 ± 50		23±0.5℃
Pot Life(Minute)	60±10		23±0.5℃
Tack Free(Hours)	14±5		23±0.5℃
Hardening Time(Hours)	24~36		-
Packing Unit	20kg / 10kg	10kg / 9kg	-

DH-203 Dry Type Medium Viscosity Property Data

DH-203 Dry Type Medium Viscosity Property Data
Test Category		Result Value	Base Value	Test Method
Viscosity ( mPa,s )		435	Under 500	KS F 4923
Seal Strength ( N/ m² )		48.4	Over 15
Seal Breaking Expansion Rate ( % )		3.2	Under 10
Adhesive Strength ( N/ m² )		10.3	Over 3
Hardening Contraction Rate ( % )		0.4	Over 3
Heating Change	Weight Change Rate ( % )	1.4	Under 5
(110±3℃,168hr)	Volume Change Rate ( % )	0.9	Under 5

Pot Life The period of time during which you can work without a change in viscosity after resin and hardener are mixed.

Tack Free The state of hardening in which you can lightly touch the mixed resin with your hand, but the hardened material does not stick.

Hardening Time The time it takes for the mixed resin to be hardened enough to realize about 80% of final mechanical strength.

MATERIAL

1. Reinjector is a mid-low pressure injecting device, upgraded to improve the effectiveness of grouting for crack repairing by incorporating the merits of the high pressure grouting of packer and the merits of syringe injector.
2. Syringe injector is a low-pressure, low-speed grouting device. A syringe injector containing the resin is set on the cracks and the resin is slowly injected with the help of resilience of the rubber band.
As explained above, you can employ various kinds of methods by using numerous grouting devices. The following work guidelines are based on the syringe injector, the representative low-pressure grouting method. You are free to change the materials depending upon the site condition. Please refer to the reinjector method and packer grouting method to learn how to use.