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  1. Home
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  3. Civil Engineering Materials
  4. Road, bridge and tunnel materials
  5. Bridge Materials
  6. Expansion device "Rubber Ace Joint RTH/RT-AS type"

Expansion device "Rubber Ace Joint RTH/RT-AS type"

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RTH/RT-AS type

last updated:Jun 23, 2026

Chugai Doro Co., Ltd.
Chugai Doro Co., Ltd.
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Vertical linear structure / butt joint type! A simple design that demonstrates economy and versatility.

The "Raba Ace Joint RTH/RT-AS Type" is a butt-type rubber joint with a simple structure and vertical design that prioritizes initial cost. Its simple structure, along with the use of reinforced steel plates and stud anchors, ensures robustness through integration with the floor slab. It maintains high water-tightness due to excellent adhesion between the steel plate and sealing rubber achieved through vulcanized bonding. The joint gap is minimal, ensuring good running performance. Its lightweight and simple structure allows for high-quality construction with ease. 【Features】 ■ Structural Characteristics... A butt-type rubber joint with a simple vertical structure that prioritizes initial cost. ■ Durability... Robustness ensured through integration with the floor slab by adopting a simple structure and reinforced steel plates with stud anchors. ■ Water-tightness... High water-tightness achieved through vulcanized bonding with excellent adhesion between the steel plate and sealing rubber. ■ Running Performance... Minimal joint gap ensures good running performance. ■ Workability... Lightweight and simple structure allows for easy high-quality construction. ■ Economic Efficiency... Prioritizes cost performance, providing benefits in both the product itself and workability. *For more details, please download the PDF or feel free to contact us.

    Bridge Materials
ラバエースジョイントRTHRT-AS型_01.jpg

Expansion device "Rubber Ace Joint RTH/RT-AS type"

ラバエースジョイントRTHRT-AS型_01.jpg
ラバエースジョイントRTHRT-AS型_01.jpg ラバエースジョイント RTH_RT-AS型_02.jpg
  • Related Links: Chugai Road Co., Ltd. Expansion Joint Product Information
  • Special site - Product/service details - https://pr.www.ipros.com/joint-chugai/product/

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basic information

【Options】 ■Ground Cover Joint ■Snow Removal Device Guidance Plate "Super Rib" ・Guidance Plate (One Side) Installation Specification ・Guidance Plate (Both Sides) Installation Specification ■Secondary Water Stop Material "Double Water Stop Unit" ・Slab Mounting Type (Method A) ・Main Body Mounting Type (Method B)

Price information

■List Price: Please contact us for details. ■Market Price: Products listed in "Monthly Estimation Materials" *Prices may vary depending on specifications and installation conditions. Please contact us for more details.

Delivery Time

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Applications/Examples of results

■ Roadway section (PC bridge, RC bridge, steel bridge, prebeam bridge) ■ Sidewalk section (PC bridge, RC bridge, steel bridge, prebeam bridge) ■ Snowy and cold regions ■ Longitudinal joints, transverse joints ■ New construction, repair ■ Replacement of steel finger joints/steel slide joints

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Model number overview
RT-AS Tolerable expansion and contraction amount 20mm (±10mm), standard play space 38mm, product height 125/100mm
RTH-35 Tolerable expansion and contraction amount 35mm (±17.5mm), standard play space 48mm, product height 100mm
RTH-60 Tolerable expansion and contraction amount 60mm (±30mm), standard play space 58mm, product height 125/100mm

catalog(3)

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Expansion device [Rubber Ace Joint RTH/RT-AS type]

Expansion device [Rubber Ace Joint RTH/RT-AS type]

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Expansion device secondary water stop material component [Double water stop unit]

Expansion device secondary water stop material component [Double water stop unit]

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Snow Removal Device Guide Plate [Super Rib SRS Type (Type 2)] for Snowy Areas

Snow Removal Device Guide Plate [Super Rib SRS Type (Type 2)] for Snowy Areas

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Company information

Chugai

Chugai Doro Co., Ltd.

Building materials, supplies and fixtures manufacturers

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Our company, a specialized manufacturer of expansion devices for bridges and elevated roads, has been in operation for 60 years since its founding in 1965. While responding to needs such as safety, drivability, durability, and cost-effectiveness, we support a better road and living environment as a company that plays a part in social infrastructure. Even during disasters that have occurred across the country, our products have minimized damage, fostering greater safety and trust. "Together with people, roads, and the environment" We will continue to walk this path.

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