PMC-S Acrylic Liquid Cold Spray Applied Waterproofing System-Specialized for Tunnel and Underground Work

ACRYLIC SPRAY
WATERPROOFING SYSTEM
RESEARCH AND
APPLICATION
Reporting Date：July 7th,2016
Colin Leung +86 15928474171(whatsapp)

CONTENT
Acrylic Spray Waterproofing System Research and Application 2016/7/19
2
4
33
Technical Background31
Technical Content
Projects Application
Prospects and benefits
35
Technical Prospects
2

Technical Background[1]
3

1 TECHNICALBACKGROUND
1.1 Underground Projects Leakage Current Situation
2016/7/19Acrylic Spray Waterproofing System Research and Application
Highway Tunnels Underground Railway Parking Civil Air Defence
Common underground projects types
Underpass Tunnels Underground Street Underpass Underground Buildings
4

High Leaking Rate of the
Underground Projects Up to 30%
5

Covered-excavation Tunneling
Waterproofing System
Cut and Covering Tunneling
1.2 Underground projects Leakage Reasons Analysis
Waterproofing
Layer
Waterproofing Layer
6
First Lining
Lining
Structural
Waterproofing
Waterproofing layer
Central
Sulcus
Confining Bed
Backfilling soil
Building
Envelope
Waterproofing
Building
Envelope
Waterproofing
Central
Sulcus
Surrounding Rock
for Seepage-proof
Secondary Lining
Lateral
Sulcus
Lateral
Sulcus
Surface Treatment

Covered-excavation
Cut and Covering
Tunnel Waterproofing
7

Cut and Covering Metro Station
Waterproofing
Layer
8

1TECHNICAL
BACKGROUND
9

The development of water migration during
the both concrete membrane interfaces
makes: the leaking area expands, wide
influence,
difficulties to find the leaking area, difficulties
to repair, high cost to repair. 10

1 TECHNICAL
BACKGROUND
 Disadvantages of Coiled Waterproofing
Membranes:
 Certainly not seamless
 Easy to be damaged in the subsequent
handling by welding spark, nails, rebar
 Easy to be influenced by the surface
evenness
 Easy to develop water migration
during the both concrete membranes
interfaces
11

1 TECHNICAL BACKGROUND
1.3 Acrylic Spray Waterproofing
2016/7/19Acrylic Spray Waterproofing System Research and Application 12

1 TECHNICAL
BACKGROUND
 Advantages of Acrylic Spray Film
 Seamless
 Strong Resistance to the
Subsequent Handling Damages
 A1 Grade Fireproof
 Fully Bonded System
 Prevent the Development of
Water Migration During the Both
Concrete Membrane Interfaces
 Play a Role In Lining Pressure
Resistance
13

1999
Dazhulin
Tunnel
2004～2007
Technology
System
Modified
2010
Munigou
Tunnel
14

1 TECHNICAL
BACKGROUND
 Scope of Application
 Mountain
Tunnels
 Underpass
 Metro Stations
 Running Tunnel
 Shaft
 Immersed
Tunnels
 Cave
 Tunnel Repairing
15

Technical Content[2]
16

2 TECHNICALCONTENT
2.1 Polymerization Mechanism
Produce
Radical
Chain
Initiation
Chain
Growth
Chain
Termination

2 TECHNICALCONTENT
Main Liquid
A
Oxidant
Emulsion
A
Spray
Gun
Waterproofing Film
Surface
Emulsion
B
Main Liquid
B
Deoxidant
Mix Mix

2 TECHNICALCONTENT
2.2 Main Technology Consist
Film Materials
• Polymerization Mechanism, Material Comparison
and Selection,Fomula,Manufacturing Technology
• Film Materials Modify Technology,Durability
Research
Spraying Machine
• Spraying Delivering Machine
• Spray Gun
Construction Technology
• Construction Progress
• Construction Technology Standards

Waterproofing Materials
Research
Spraying Machines
Research
Construction Technology

2 TECHNICALCONTENT
2.3 Main Technical Data
Inspection Item
Performance Requirement
Test MethodEmulsion A Emulsion B
Appearance
White or Grey
Suspension
Liquid
White or Grey
Suspension
Liquid Visual Inspection
Solid Content
≥45 ≥45
GB/T 16777
pH Value 7.0 ~ 8.0 6.0 ~ 7.0 pH test paper
Gel Time ≤5 seconds
According to
relevant
regulation
Inspection Item Performance Requirement Test Method
Breaking Tensile Strength
（Mpa)
≥1.1
GB/T 16777
Elongation at Break（%）
≥200
Tear Strength(kN/m) ≥5
Watertightness No Leakage

2 TECHNICALCONTENT
2.4 Waterproofing Performance Research
Property Project Requirement
Basic Property Watertightness
The basic function requirement to
waterproofing material
Mechanical
Property
Strength External Stress Resistant
Tenacity External Abrasive Resistant
Drainage Function
Prevent the underground water
behind the lining accumulation
Chemical
Resistance
Resistance to
Corrosion
Resistance to the special ion in the
underground water corrosion
Acrylic Spray Waterproofing Film Main Functions Requirements

2 TECHNICALCONTENT
 Long-Term Impermeability Test（0.3Mpa，30 Days）

2 TECHNICALCONTENT
 Impermeability Contrast Test Operated on Different Parts
1.2 MPa 1.2 MPa 2.4 MPa

2 TECHNICAL
CONTENT
 Chemical Solution
Immersion Test

2 TECHNICALCONTENT
Drying（Dehydration）Contrast Test
（100℃，Dry to Constant Weight）

Tensile Splitting Strength
Test
2 TECHNICALCONTENT
Mixed-Mode Test-Pieces Mechanical Test
Tensile Test
Earlier Pouring
Concrete
Later Pouring
Concrete
Waterproofing
Layer

2 TECHNICALCONTENT
 Compound Concrete Water Moving Behind the Lining
Prevention Test（0.6 MPa）

2 TECHNICALCONTENT
 Compound Concrete Control Drainage Test
Max Rated
Hydraulic
Pressure is 6.3
Mpa，Max
Stable Hydraulic
Pressure Can Be
Added is 0.25
Mpa

2 TECHNICAL
CONTENT
2.5 Part of Technological
Achievements
 Academic Achievements
 14 Authorized Patents
 Over 40 Articles（SCI included one，
 EI included 5）
 One Monograph（Tunnel and
Underground Spraying Film
Waterproofing）
 Training over 20 doctors and
masters
 Write an Industry Standard Book

2 TECHNICALCONTENT
 Academic Communication Home and Abroad

2 TECHNICALCONTENT
 Awards
The Second Class Prize of National Science and Technology Progress Award certificated by State Council, the
highest honor in People's Republic of China in science and technology, in order to recognize citizens and
organizations who have made remarkable contributions to scientific and technological progress, and to
promote the development of science and technology.

Projects Application[3]
33

3 PROJECTSAPPLICATION
Railways
Tunnels
Highways
Tunnels
Underpass
Other
• 1999 Dazhulin Tunnel
• 2002 Mogouling Tunnel
• 2012 Tianpingshan Tunnel
• 2014 Wujiawan Tunnel
• 2001 Lianhuang Tunnel
• 2010 Munigou Tunnel
• 2011 Balangshan Tunnel
• 2013 Xueliangshan Tunnel
• 2013 Nanjing Youth
Olympic Center J-2 Part
• 2015 Langzhong Railway
Station Underpass
• 2013 An Underground Oil
Depot Cave
• 2014 Pengzhou Petrochemical
Base Tanks Bottom Seepage
Prevention
• 2014 Shenzhen LNG Terminal

3 PROJECTAPPLICATION
3.1 Scope of Application
 Airtight, Backfilled, Covered
Tunnels, Underground Projects,
Caves and Similar Projects
 High Grade Requirement of
Waterproof(Design Thickness is
3mm and thicker)
 Operation On Upstream Face Or
Behind Structure Supported Parts

3.2 Operation
Operation Procedures
 Surface Clear
 Install Drainage Materials
Spray the film
Inspection

 Surface Clear Requirements
 Surface protrusion should be
cut or hit to be flat
 Water on surface is not allowed,
otherwise, water shutoff or
drainage is required
 It is better to ensure a certain
evenness of the surface to save
spraying materials, otherwise,
Leveling or Isolation is required
 Surface Leaking Water pH Value
should be less than 13

 Thickness of the
Film Management
 Spraying Machine
Parameter Control
 Spray Gun Movement
Locus
 Spray Worker
Training
 Thickness
Inspection Methods
 Defect Repairing

 Spraying Machine Parameter
 Use High Pressure Airless
Spraying Apparatus for Large
Area Operation
 Mix inside the gun and mix
outside the gun
 Spraying Speed Rate should be
more than 1 m2/min
 Compressed Air Output
Pressure should be more than
1.0 MPa，Gas Production Rate
should be more than1 m3/min
（1）
（2）
（1）
（2）

 Spraying Operation Requirement
 Do In Time Protection and
Coverage to the Film
 Do Safeguarding Measures to the
workers
 Quality Inspection and Repairing
to the Film ：Thickness、
Appearance、Leaking（Dominant
Items）

3.3 Munigou Tunnel
2016/7/19
Acrylic Spray Waterproofing System Research and Application
41
Munigou Tunnel Location
Munigou Tunnel

3 PROJECT APPLICATION
 Munigou Tunnel is 1835m long,
Two-Lane ，Max Driving Speed
60km/h
 This project was on the altitude
over 3000 meters, with the
feature of high altitude, low air
pressure, low temperature and
large temperature difference
between day and night,
minimum temperature reached -
6℃ in the spring construction,
The groundwater is developed
in the tunnel.

Open Cut Tunnel Lining, Waterproofing and Insulation Structure
 Waterproofing and Insulation Design
Waterproofing and
Insulation Layer
Secondary Lining

Undercutting Part Lining, Waterproofing and Insulation Structure
Shotcrete First Lining
Drainage System Waterproofing and
Insulation Layer
Concrete Secondary Lining

Undercutting Part Lining Conventional Waterproofing Structure
Drainage System Waterproofing and
Insulation Layer
EVA Membrane
Non-Woven Buffer Layer

Acrylic Spray Waterproofing in Munigou Tunnel

3 工程应用
2016/7/19隧道及地下工程丙烯酸盐喷膜防水技术研究及应用 47
Waterproofing Comparison After Construction
Waterproofing Comparison During the Construction

3.4 Nanjing Youth Olympic Center Axis Underpass
 Nanjing Meizizhou Under-River
Tunnel-Youth Olympic Axis
Underground Construction Project
is one of the auxiliary projects for
2014 Youth Olympic Game,
consisted of Meizizhou Under-
River Tunnel, Youth Olympic Axis
Underground Transportation
System and Youth Olympic Axis
Plaza Underground Space three
parts.
Project Planning Block Satellite Map
Our project B2-J1 Part

 This project’s core
control area is B2-J1
part，consisted of
Meizizhou Tunnel,
Bingzhou Road,
Interchange Ramps
and underground
space, it is a partial
underground three
layers framing
structure, cut and
covering method
adopted, A grade
waterproofing
requirement.
The Acrylic
Spray Film
Waterproofing
Area

3 PROJECTS APPLICATION

August,2015(rainy season) Return Visit Result

3.5 Shenzhen East-West
Dapeng and Diefu offshore LNG
Terminal connects the harbor
trestle and the receiving station
tank field, total length 584m, max
depth of the tunnel 43m
This is the first LNG terminal in
China and the third in the world,
related documents and
construction experiences for
reference are very limited.

The Terminal

 There are total 10 pipes
crossing through the
tunnel portal endwall,1
LNG Receiving Pipe,1
BOG Recirculatory
Pipe,1 LNG Circulating
Pipe,1 VENT Pipe,1 Fire
Water Supply Pipe and
5 Utility Pipes, protected
by filling nitrogen, with
high level requirements
on waterproofing and
gas tightness.(Special
Grade of waterproofing) LNG Terminal Sectional View and Tubes Arrangement Diagram

The ground water under the tunnel is fissure bedrock water that
mainly lays in medium-grained granites and vein rocks, spreading
over the fissuring in the strong and medium weathered layer.
Atmospheric precipitation supplies the ground water. Depth of the
ground water is 1.20 to 18.30 meters during the geological exploration.

• Two Geotextile-Two Membranes
waterproofing method:
• Geotextile waterproofing layer(400g
Geotextile) + Composite Waterproofing
Sheet(1.5mm thick EVA waterproofing
sheet+100g geotextile) + Acrylic Spray
Membrane(4mm thick), the original
steel plate waterproofing design
cancelled because steel plate needs
welding(no fire is allowed in the
construction),rough handling on the
welding, heavy weight, high costs, long
operation period time. Adopting PMC-S
saved 303 million US dollars and one
year construction period time.

EVA Membrane Installation in LNG Terminal

Our Acrylic Spray Waterproofing
Operation in Shenzhen LNG Terminal

Acrylic Waterproofing Film Was not Damaged By the Second Lining Reinforcement Assembling and Welding

Perfect waterproofing effects in our
return visit during the equipment
construction stage（June,2015）

3.6 Other Projects

Prospects and Benefits[4]
63

4 PROSPECTS AND BENEFITS
4.1 Technical Advantages:
 Spraying leads to efficient, fast construction, saving
labors, it is a new generation and the main direction of
waterproofing technology development in the future
 Strong Adaptability to the surface, safe seams handle,
avoid the important hidden danger to waterproofing
 Fireproof, strong puncture resistant, strong subsequent
handling damage resistant
 Could be applied with waterproofing sheets to achieve gas
tightness, meet high waterproofing grade
 Save a huge amount of subsequent repairing and
maintenance cost, overall economic benefit is excellent.

4.2 Prospects

4.3 Benefits Analysis
Subsurface Structure Performance-Time Graph
Benefit
Quality
Cost
Total Cost
Construction cost
Maintenance Cost
Subsurface Structure Cost-Quality Graph
Performance
Good
Bad
Construction
Time
Now Time
C:Failure and
Accident
A:Initial
Condition
D:Repairing, reinforcement
Boundary
Condition
Current
Condition

Technical Prospects[5]
67

5 TECHNICAL PROSPECTS
 Spray waterproofing materials types is growing in the market，
including acrylic, polyurea, rapid-hardening spray applied liquid
rubber asphalt, methyl methacrylate and so on, project
application cases of these spray waterproofing materials are also
growing gradually

5 TECHNICALPROSPECTS
 Application in tunnels and
underground projects cases are
growing one by one，including
mountain tunnels、underground
railway and tunnels、underground
Park、underpass、immersed pipes
tunnels、shaft、cave and tunnel
repairing, etc.

5 TECHNICALPROSPECTS
 Spray waterproofing materials types for tunnels and
underground projects are growing, exclusive spraying
machines are updating, spray waterproofing systems are
improving

5 TECHNICAL PROSPECTS
 Relevant industry and national standards are coming on
and being revised, which lays the foundation of applying
new spraying waterproofing technologies
（Revising）

5 TECHNICAL PROSPECT
New Technical contents and researching
methods are updating

Thanks for Watching.
If any inquiries, please contact mailto:colin@scgbco.com

PMC-S Acrylic Liquid Cold Spray Applied Waterproofing System-Specialized for Tunnel and Underground Work

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