Hanbon Industries Co., Ltd.
5 1

Asphalt Waterproofing Sheet

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Hanbon Industries Co., Ltd.
[Korea]

Address
314-34, Unyong-ri, Dunpo-myeon, Asan-si, Chungcheongnam-do
Phone
82-41-5321707
Contact name
Bae Jangwon

Description

Asphalt Waterproofing Sheet

SBS Modified bitumen Waterproofing Sheet File No : HB55


Sheet Waterproofing Work for Reinforcing Water-Tightness

1. Overview of Products

  • SBS's modified bitumen waterproofing sheet mainly consisted of modified asphalt compound made of bituminous straight run asphalt, by product of refinement of crude oil, mixed with SBS (Styrene, Butadiene's Styrene) rubber of high compatibility with asphalt

2. Cross section of asphalt sheet waterproofing layer

3. Characteristics of asphalt waterproofing sheet

Item
Characteristics
(1) Excellent durability and weather resistance
  • Excellent durability and weather resistance without being brittle at low temperature, or being sagged at high temperature
(2) Modified asphalt compound with excellent elasticity
  • Modified asphalt compound mixed with thermoplastic SBS synthetic rubber for excellent elasticity and restorative capacity against impact
(3) Excellent chemical resistance and crack resistance
  • Excellent chemical resistance against acid, alkali and salt water, and crack resistance capable of preventing waterproofing layer from breakage via good elasticity, flexibility and elongation strength against cracks of concrete structure
(4) Excellent water tightness on joints of asphalt waterproofing sheet
  • Excellent water tightness on joints between waterproofing sheets by integrating the sheets with excellent self adhesiveness of sheets or thermal bonding with torch
(5) Excellent dimensional stability
  • Excellent tensile strength, elongation rate and heat resistance, and fatigue resistance and dimensional stability against repetitive stretching of waterproofing sheet reinforced with polyester non-woven fabric or polypropylene non-woven fabric
(6) Excellent adhesiveness of self adhesive asphalt waterproofing sheet
  • Excellent adhesiveness with concrete surface of waterproofing sheet added with PIB (polyisobutylene) rubber for increasing adhesiveness of modified asphalt, far higher than common self adhesive asphalt waterproofing sheet

4. Types and Specifications of Asphalt WaterProofing Sheet

Item
(1) Waterproofing Sheet (Self Adhesive Type)
(2) Waterproofing Sheet (Torch-on Type)
(3) Waterproofing Felt Sheet (Self Adhesive Type)
Configu- ration Shape
THK
1.5mm/2.0mm/2.5mm/3.0mm
2.5mm/3.0mm/3.5mm/4.0mm
1.0mm/1.5mm/2.0mm
Charac- teristics
  • Excellent adhesiveness with concrete surface of modified asphalt compound reinforced with polyisobutylene rubber for increasing adhesiveness
  • Excellent durability and weather-resistance
  • Stretchy asphalt felt :Asphalt felt with reinforced tensile strength, heat resistance and crack resistance by impregnating polyester non-woven fabric into asphalt; Waterproofing capability of stretchy asphalt felt preventing penetration of moisture and water.

5. Quality Criteria of Asphalt WaterProofing Sheet
a. Quality performance dependent upon classification of applications and material composition (KSF 4917/JIS A 6103 quality standards)

Classification by application
Unit
Single-layer waterproofing
Multi-layer waterproofing
Classification by material composition
-
Class A
Class B
Class A
Class B
Tensile charac -teristics
Tensile strength
No processing
N/cm (kgf/cm)
80(8.2) or more
20(2.0) or more
50(5.1) or more
20 (2.0) or more
Elongation rate
No processing
%
15 or more
20(2.0) or more
15 or more
400 or more
Tensile product
No processing
N-%/cm (kgf-%/cm)
2,500(255) or more
12,000(1,225) or more
2,000(204) or more
12,000(1,224) or more
Heat-resistance
 
20 (2.0) or more
20(2.0) or more
Heat-durability
Length of sagging
mm
5 or less
5 or less
Apparent shape
-
No sagging or foaming
No sagging or foaming
Fatigue-resistance capability
-
No fine crack, tearing or breakage
No fine crack, tearing or breakage
Dimensional stability
Dimensional variation rate
%
0.0±1.0
0.0±1.0
Apparent shape
-
No abnormal wrinkle, bending, or peeling between layers
No abnormal wrinkle, bending, or peeling between layers
Adhesiveness capability
N/cm (kgf/cm)
50(5.1) or more
50(5.1) or more
Concave-resistance capability
-
No hole is allowed
No hole is allowed

6. Construction method of asphalt sheet waterproofing
(Comparison with common construction method of asphalt sheet waterproofing)

Item
Common construction method of asphalt sheet waterproofing
-Construction method of asphalt waterproofing sheet
(1) Construction method of waterproofing sheet joints
  • Thermal bonding with a torch on overlapped sheets 10cm wide

  • Attraction interrupting uniform thermal bonding with torch, resulting in frequent waterproofing defects on sheet joints due to deficient watertightness at portion with excessive melted asphalt compound

  • Thermal bonding with a torch on overlapped sheets 10 cm wide

  • Preventing waterproofing defects on sheet joints by enhancing water-tightness of sheet joints by coating asphalt mastic membrane waterproofing material in 2 to 3mm thickness on area of 5 cm width from the end of overlapped portion of the sheet for the purpose of increasing adhesiveness of sheets and preventing sheet separation (Coating asphalt mastic on the ends of sheet waterproofing layer for enhancing water-tightness)

(2) Reinforcing method of waterproofing layer at defective waterproofing area
  • Attaching reinforcing sheet cut in small width on waterproofing defect area such as concrete crack area, corners, pipe connection area and drain prior to layering waterproofing sheets

  • Loosing due to deficient adhesiveness of reinforcing sheet

 

  • Reinforcing waterproofing layer by layering asphalt felt sheet 20cm wide after coating asphalt mastic membrane waterproofing material in depth of 1 to 2mm on defective waterproofing area such as concrete crack area, drain, pipe connection and corner where floor meets wall

  • Realizing perfect waterproofing layer on defective waterproofing area with felt sheet of excellent adhesiveness, tensile strength and heat resistance of asphalt mastic

  • Reinforcing waterproofing layer at waterproofing defective area (Refer to detail drawing)
(3) Reinforcing method of waterproofing layer at in-corner where floor meets wall
  • Making curve by 45° with waterproofing mortar, and raising waterproofing sheet on floor to wall up to 10cm. Lowering waterproofing sheet from wall down to floor by 10cm

  • Though waterproofing mortar is kept bonded with concrete surface when making curve with water- proofing mortar, however, shrinkage and expansion coefficients vary dependent upon changes in temperature. Consequently, waterproofing mortar layer is separated from concrete surface and results in defective waterproofing area.

 

  • Asphalt mastic membrane waterproofing materials are coated in 1 to 2mm thickness on concrete surface of a corner where floor meets and wall, stretchy asphalt felt for reinforcement of 20cm width is attached for reinforcing waterproofing layer, and then waterproofing sheet is attached to raise from floor to wall up to 10cm, and falled raised sheet from wall is lowered to the floor down to 10cm.

7. Consumption of materials asphalt sheet waterproofing (perm²)

Product
Unit
Consumption
Remarks
Asphalt primer
Liter
0.3
 
Asphalt waterproofing sheet
1.15
 
LPG
kg
0.08
 
Asphalt mastic membrane waterproofing material (Asphalt Mastic #5000)
kg
0.2
  • For reinforcing water-tightness on joints of waterproofing sheets

  • Reinforcing waterproofing layer at waterproofing defective area
Asphalt felt sheet for reinforcing waterproofing layer (Stretchy Asphalt Felt Sheet)
m
0.06
  • Reinforcing waterproofing layer at waterproofing defective area

Note

  1. Applying quantity taking into account of decreases and increase of materials
  2. It is expected that consumption increases or decreases dependent upon number of defective water- proofing areas for asphalt mastic membrane waterproofing material or stretchy asphalt felt for reinforcement.

 


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  • Asphalt Waterproofing Sheet image

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