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Bridge items (Polymer Cement Mortar as a Corrosion Inhibitor for Concrete structure)

(1) Product Outline and Usage

It is a polymer special mortar suitable for water, carbon dioxide, chloride, etc. and excellent water permeability and durability by mixing fiber and special powder resin with 400kg/cm2 or more and for repairing reinforced concrete and recovering non-shrinkable cross-section.

(2) Product Property (KS F 4042)

Test Method

Age

Test Result

Compression strength

3days

20~30N/㎟

7days

35~40N/㎟

28days

45~50N/㎟

Bending Strength

7days

6~8N/㎟

28days

7~9N/㎟

Attachment strength

7days

1.0~1.5N/㎟

28days

1.0~2.15N/㎟

Length change rate

 

≒0.002%

Condensation time

Initial condensation

2~4 hours later

Final condensation

5.5~8 hours later

There may be some differences depending on the test conditions.

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(3) Thickness of construction

Work with a trowel so that the vertical surface is 20 to 30 mm and the horizontal surface(ceiling) is 10 to 20 mm in thickness in one time. If it is foamed and repeatedly constructed, it can be constructed thicker.
When using the Spary machine, apply 50 to 70 mm to the vertical surface and 30 to 50 mm to the horizontal surface. The minimum construction thickness is 10mm.
- Mixing : Put 25 kg of cement mortar in about 4-4.75 liters of clean water and mix with a forced mixer (400-500 rpm) for 3 to 5 minutes.