Our business is expanding beyond road construction
From “road constructor”
to “Comfortable environment Constructor”
Everyone changes. We are becoming a creator of comfortable environments.
We create luxurious, natural environments for individuals and society.

1We help build the infrastructure that provides comfortable living environments.
We aim to be a creator of comfortable environments.

Our starting point is the construction of safe, comfortable, andconvenient community roads that harmonize with nature.
Since community roads are closely linked
to daily life and are the starting point forinfrastructure development, we strive toaccumulate new technologies and knowhow, always keeping in mind our role inJapan's history of road construction.

Tokyo Station, Yaesu Entrance

3Community roads

National Route44 at Kushiro-cho

Saga Route 203 in Takuhara District

Hida Tunnel (cement concrete pavement)4

Transportation networks

We apply our long and varied record of accomplishment and reliable
technologies to traffic networks that support social development.
Our continuous and wide-ranging R&D
has increased the strength and service lifeof pavements and improved Transportation
networks for highways, airports, etc. This
experience will allow us to improve theTransportation networks that supportsocial development in the future.

Tokyo International Airport (Pavement at Apron)

Shin-Tomei Expressway in Aichi Prefecture

Shimizu Port in Shizuoka Prefecture

5Industrial infrastructure

Our contribution to industrial development and business productivity isbased on total cost engineering, which takes into account production,
distribution, and commercial facilities.
We have developed numerous construction
methods to construct the facilities,
including the TX method by which floors
can be repaired and maintained without
shutting down production lines, the RCCP
method by which shopping malls can berenovated without suspending business,and the injection method by whichroadways can be paved with natural stone
at nominal cost. We provide a full range ofcost engineering services, from techniques
to reduce construction costs to methods
that improve the productivity of facilities.
Marunouchi Nakadori Street

Cinecitta Kawasaki

Jinmon-Dori in Shimane Prefecture6

Regional improvement

We maintain a harmonious balance among nature, society, andindividuals and help create a clean environment.
Our work in regional improvementsincludes land development, sewagesystems, road improvements, bridges, dam
seepage control, and river improvements.
In helping to create a clean environment,
we take into account the effects of ouractivities on the local residents, thecommunity, and the natural environment,
as well as the impact on roads, sewers, andother nearby structures.

Sarukawa Seseragi Park

Kanai Central Land Readjustment Project

Yokohama Motomachi Mall7

Local infrastructure

We help improve the local infrastructures that make life more
comfortable.
On the stage of daily life, a community’s roads, parks, andopen space the users play major roles. By improving these
local infrastructures, we help to make the lives of their users
more comfortable. We develop new technologies, construction
methods, and materials by focusing on the users’ perspective:
How can we make the roads more comfortable, the pavements
more user friendly, and the urban developments more
respectful of community history and culture?

Kyoto Gion Street

Chikugo City Park in Fukuoka Prefecture

Hamana Lake Flower Expo8Sports and leisure facilities

We help create safe, sophisticated sports and leisure facilities forpeople of all ages.
We h a v e e x t e n s i v e e x p e r i e n c e i n
improving sports facilities. We helped
build the National Stadium, where world
records have been set, as well as theInternational Stadium Yokohama, which
was the main stadium of the 2002 FIFAWorld Cup. We want to use our extensive
experience and wealth of accumulated
knowledge and technology, including in
the fields of human engineering and sports
medicine, to create safe and sophisticatedsports facilities.

JRA Nakayama Race Course

Path by Ohyokogawa Shinsui Park

Ohkurayama Ski Jump Hill

International Stadium Yokohama（a Sports Field）

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National land preservation andenvironmental protection

We protect the rich natural environment and irreplaceable national landso that future generations can enjoy them.
As part of our goal of creating a comfortableenvironment for people, we take a progressive
approach to the preservation of the beauty andbounty of our natural environment. We take care tominimize the effects of construction activities on thenatural environment and create habitats for livingorganisms. To help protect the environment, we aredeveloping technologies to recycle construction
by-products, reduce carbon dioxide emissions, etc.

Kohyasan Dam (Asphalt facing)

Prevention of Hazard in East Fuji Area (Asphalt facing)

Waste disposal site in Maizuru city

10Overseas business

Our ecologically friendly technologies can be found all over the world.
All people everywhere want to leave theirchildren a rich, natural environment and aclean sea. This is a vitally important theme
for those of us involved in developing
roads, dams, airports, and cities. We use
our civil engineering and architectural
technologies to develop rich, comfortable,natural, and healthy environments forpeople around the world.

National Highway Construction PJ in Pakistan

Cable-stayed bridge on the Second Highway in Taiwan(pavement on the bridge)

11Overseas business

New Iloilo Airport in the Philippine

New Iloilo Airport in the Philippine

Colombo International Airport in Sri Lanka

National Highway No.5 in Vietnam

Arterial road in the Republic of Ghana

Xilongchi Pumped-storage Power Station in China

Zhanghewan Pumped-storage Power Station in China

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Joint ventureswith Chinese companies

1. Beijing Luxin Dacheng Exquisite Paving CorporationObjectives:(1) Introduce advanced technologies and equipment into the special pavement market in China(2) Reinforce special pavement business in the expanding Chinese market
Sphere of business: (1) Construction of special pavement, and production and sales of pavement materials(2) Development, design, and consulting of road surface technologies

2. Beijing No.1 Municipal Engineering Co., Ltd
Objectives:(1) Technological cooperation for contracts received in China and overseas(2) Support preparation of cost estimates to receive contracts for construction work
Sphere of business: (1) Contract to carry out construction and specialty works(2) Lease of construction plants, equipment, and materials

13Technology - Design - Research

Every division strives to create comfortable living environments.

We foresee social needs and technology trends and appropriately reflect
them in our designs and construction work.
- Technology Division Our lifestyles are undergoing dramatic changes, consequently, our social infrastructure is becoming more diversified andsophisticated. To meet modern needs, we collect and analyze various technological advances, particularly those related to roadtechnologies. Our sales, design, and construction divisions use this information to develop the best possible solutions for eachcustomer’s needs.

We obtain customer satisfaction by proposing technologies best suited tocustomer's needs.
- Design Division We propose suitable technologies for the design works listed below that will gain customer's trust and satisfaction.
• Land development that is in harmony with nature• Economical and functional road design• Structural design giving full consideration to safety and life cycle cost

We develop and introduce new technologies.
- Research Division We carry out basic research into the essence of social needs, such aspreserving and restoring the natural environment and creating comfortablesocial and living environments. We not only improve existing technologies
but also develop new materials and construction methods that raise the levelof technology.

Central Research Center

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Special construction methods

Porous Pave
OutlinePorous Pave is a paving method using highly porous asphalt mixture.
Comfortable environment is created because of the following
characteristics of this method.
• Rainwater seeps into the porous asphalt mixture of the surface courseand flows in/down• Reduces road noise
There are two types - drainage type and permeable type. The
characteristics of each are as follows.
Drainage type Porous Pave

Drainage type
Rainwater seeps into the porous asphalt mixture of the surface courseand flows down the drain slope (longitudinal and cross grade) of theimpermeable binder course. The water then drains into the gutter along
the road shoulder.

Rainwater
Flow-throughSurface course (permeable)
Drain slope→

Features and effect
1. Prevents hydroplaning		
2. Improves visibility by preventing water smoking
3. Improves visibility by eliminating light reflections on the road surface4. Reduces traffic noise by absorbing soundSeepage
Drain

Binder course (impermeable)
Base course
Sub grade

Cross-section of drainage type Porous PaveApplications
1. Inner-city roads
2. Highways
3. Parking areas, etc.

Permeable type
Rainwater seeps into the porous asphalt mixture of the surface courseand permeates the lower courses (base course and sub-grade).

Features and effect
1. Improves walking comfort by eliminating surface water (promenade)2. Groundwater conservation (planting strip)
3. Controls surface runoff and reduces loads on sewer mains duringheavy rainfalls

Applications
1. Roads in residential areas
2. Sidewalks
3. Footpaths
4. Parking areas, etc.

Typical application of permeable type Porous Pave

Rainwater

Surface course (permeable)

Permeable

Sub-base course

Filter course

Water retention(storage)
Permeable

Sub grade

Cross-section of permeable type Porous Pave

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Special construction methods

Solar Radiation Reflective Pavement
OutlineTechnology to highly efficiently reflect near infrared rays by pasting
solar radiation reflective material on the pavement surface, leading tolowering of surface temperature.

Features and effect
1.Lowering of road surface temperature by 10℃ in the daytime.
2.Improving roadside environment in summer.
3.Mitigating of heat island phenomenon.

Applications
1.Main road
2.Community road
3.Cycling road
4.Jogging path
5.Bus stop
6.Parking lot

Water Retaining Pavement
OutlineTechnology to prevent the pavement temperature from rising by
evaporation of the water kept inside of the pavement by using waterretaining polymer.

Features and effect
1.Lowering of road surface temperature by 10~20℃ in the daytime.
2.Improving roadside environment in summer.
3.Mitigating of heat island phenomenon.

Applications
1.Main road
2.Community road
3.Cycling road
4.Jogging road
5.Bus stop
6.Parking lot

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Special construction methods

Asphalt facing method
Outline
The asphalt facing method uses a slope paving machine and asphalt
mixtures to face and line dams, regulating reservoirs, and reservoirs.
The asphalt mixture wall constructed by the method is impermeable,flexible, and capable conforming to deformations. The method is morereliable than conventional seepage control methods using soil and/orsheets.

Features and effect
1. Impermeable
2. Flexible and capable of conforming to deformation
3. Can be repaired.

Applications
1. Dams
2. Regulating reservoirs
3. Reservoirs
Cross-section of asphalt facing wall
Surface protective layer (asphalt mastic)
Surface layer (dense asphalt concrete)
Leveling layer (coarse asphalt concrete)
Macadam layer (asphalt macadam)Transition (crusher run)

Super Flexphalt (Earthquake-resistant asphalt mixture)
OutlineSuper Flexphalt is an asphalt mixture that was developed to withstand major earthquakes.
Super Flexphalt is a specially modified asphalt-based earthquake-resistant asphalt mixture.
This material has the characteristics of asphalt mixtures such as low elasticity and deformability, yet can sufficiently conform to
deformation of dam body caused by earthquakes.

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Environment - Safety Mechanical Technologies

To enhance safety and quality, preserve the environment,and develop technology, you need superior personnel.

We aim to protect the priceless global environment andcreate a rich and natural environment.
Our Environment Department specializes in environmentalmanagement. We help businesses that have the ISO14001(environmental management system) certificate establish
corporate-wide environment management systems. The
responsibility for preserving the global environment lies witheveryone, and so everyone is taking proactive action to improve
the quality of the global environment.
■ Environmental action guidelines• Develop and introduce construction and manufacturing technologies• Save natural resources and energy, recycle waste• Implement measures to preserve and create a comfortable environment• Develop programs for education and training in environmental protection• As a community member, contribute to society through business and personal activities• Respect the regional environment when visiting other countries for businessTo earn and keep the trust of our customers, we continually improvemeasures relating to safety and health.
As constructors, our basic management policy is to improve safety and health. We thoroughly analyze and study various casesand data so that our construction and production activities will not cause anxiety or harm to either individuals or society.
■ Important control items• Eliminate serious work-related accidents• Improve and enhance construction management systems• Train supervisors• Create a comfortable working environment

We support construction and production through the development andoperation of mechanical technologies.
Technical capability can help solve current problems and open newfrontiers. Our Mechanical Technology Center analyzes the roles ofmachines in putting technologies to practical use. The Center fully
supports the development of machines for new construction
methods, the operation and maintenance of these machines, training
programs for operation and construction technologies, and the backs
up mixtures production plants.

Mechanical Technology Center

18Product sales

As a reliable supplier of high-quality mixtures, we can deliver ourproducts anywhere in the country.
Production and distribution of mixtures

Our national supply network
can quickly and accurately
attend to every need.
Our supply network of approximately 60
production bases throughout the country
can speedily deliver a wide array ofproducts, particularly asphalt mixtures, toany location in the country. Satellite silos,
mainly in urban areas, offer a convenient
and reliable supply system.
We focus on research and development ofspecial mixtures to meet new needs,
including ecologically friendly drainage
mixtures.

19

Product sales

Recycling

Recycling construction debris isan effective method of using
limited natural resources
We have installed recycling plants forconstruction/demolition material in major
cities throughout the country.
These plants recycle asphalt blocks,
concrete blocks, and base course materials,and manufacture and supply recycled
mixtures and sub-base course materials.
We help create comfortable environments
by developing new products from recycledmaterials.

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Recycled asphalt mixtures

Features of recycled asphalt mixtures
O u r r e cy c l e d a s p h a l t m i x t u r e s a r e
manufactured using a batch plant system,
which combines an ordinary batch typeasphalt plant and a dedicated recycling
plant. The batch plant system mixes
recycled aggregate with new aggregate andasphalt to create recycled asphalt mixture.
This new system separately heats the newand recycled aggregates, producing stable
and high-quality recycled asphalt mixtures.
The main characteristics of the system are
as follows.

1. New aggregate is given a primary coatingof old asphalt from recycled aggregate,
then given a secondary coating of newasphalt along with recycled aggregate. This
process produces stable recycled mixtures.
2. T h e q u a l i t y o f t h e r e c y c l e d a s p h a l t
mixtures is easy to control because thebatch plant system uses the sameprocedures that are used for ordinary
batch-type asphalt plants.

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TAISEI ROTEC CORPORATION
8-17-1 Nishi Shinjuku Shinjuku-ku,
Tokyo Japan 160-6112
TEL : 03-5925-9431 FAX : 03-3362-5803
URL http://www.taiseirotec.co.jp/