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Chemicals for Engineered concrete & Construction

Concrete Admixture

A leader in today's concrete admixture business, TAKEMOTO Oil & Fat Co., Ltd. began the commercial development of the chemical admixture in 1954. These chemical admixtures have become essential for improvement in quality and durability of concrete. The company's focus on research and development led it to pioneer the development of Polycarboxylate-based superplasticizer (PCE) in 1987. The development of PCE enabled to make ultra-high strength concrete over 100MPa of strength and self-compacting concrete (SCC), and contributed to the progress in concrete engineering.
TAKEMOTO has concrete admixture business in Japan, China, Korea, Taiwan, Vietnam, India, US and EU. TAKEMOTO continues to expand its technology to provide the highest performing products in the global admixture markets. Research is ongoing at TAKEMOTO to bring the newest admixture technology to the industry.

Polycarboxylate type superplasticizers

Polycarboxylate type superplasticizers (PCEs) were firstly developed over 20 years ago in Japan. PCEs can greatly reduce water demand and cement contents by both effects of electrostatic repulsion and entropic stabilization. And PCEs also maintain the fluidity of concrete much longer than normally observed with Naphthalene based polymers and Melamine based polymers without excessive retardation.
Recently new generational PCE has been developed. This new PCE shows high fluidity and viscosity-reducing property and shrinkage-reducing capability, especially for high strength and ultra-high strength concrete with 60 to 150 MPa of compressive strength.
PCE are also especially useful for producing self-compacting concrete (SCC) along with improving concrete durability.

High - rise Building
Structure:
59 Fl. above (203.45m), 3 Fl. below ground
Concrete Spec.:
Concrete Strength: 150MPa
Target Flow = 65cm
Target Air Content = 2.0%
W/C = 0.15
Notes:
C: Silica Fume Premixed Cement
PP Fiber & Steel Fiber
Bridge
Concrete Spec.:
Concrete strength = 50MPa
Target Slump = 15cm
Target Air content = 4.5%
W/C = 0.358
Tunnel
Concrete Spec.:
Concrete strength = 40Mpa
Target Slump = 15cm
Target Air content = 4.5%
W/C = 0.411
Notes:
PP fiber
In Taiwan
Structure:
101 Fl. above (508m), 5 Fl. below ground
Concrete Spec.:
Concrete strength = 10,000psi (70MPa)
Target Flow = 70cm
W/C = 0.273
Notes:
CFT structure
Type II cement + Fly ash + Blast-furnace slag powder
In Taiwan
Concrete Spec.:
Concrete strength = 40MPa
Target Slump = 18cm
Target Air content = 1.5%
Notes:
Type II Low Alkali cement
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www.takemoto.co.jp
Minatomachi 2-5, Gamagoori-shi, Aichi
443-8611, JAPAN
phone:+81-533-68-2111(main number)

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www.gomaabura.jp
Hamacho 11, Gamagori-shi, Aichi
443-0036, JAPAN
phone:+81-533-68-2116(main number)
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