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  3. クリテック工業 本社、大阪営業所
  4. <Media Information> An article titled "Proving 100 Years of Durability" has been published in Bridge Communication.
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  • Mar 13, 2025
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Mar 13, 2025

<Media Information> An article titled "Proving 100 Years of Durability" has been published in Bridge Communication.

クリテック工業 クリテック工業 本社、大阪営業所
The article "Proving 100 Years of Durability" was published in the March 1, 2025 issue of "Bridge Communication." *The full article is available in the related PDF document. Please download and read it. We encourage you to take a look!* <Excerpt from the article> Crittec Industries announced that its main product, the expansion joint "Hybrid Joint 3LII-500," has been proven to have a durability of 100 years through fatigue loading tests conducted by a third-party organization. The 3LII type meets NEXCO specifications. The load support plate and anchor plate are designed as a vertical integrated structure, providing high durability and preventing damage from metal fatigue. In October to November 2024, using a fatigue testing machine at the Construction Machinery Construction Association's Comprehensive Research Institute, a third-party organization, it cleared a maximum loading weight of 260 kN for 12 million cycles. This is based on the assumption that a 25-ton large vehicle ran over the 3LII-500 for 12 million times, equivalent to a 100-year durability. According to the "Road Bridge Design Guidelines," the standard design service life for bridges is 100 years. For newly constructed bridges, there is no need to replace the expansion joints for 100 years. The 3LII type is maintenance-free, eliminating the need for traffic restrictions for sound inspections, thereby reducing maintenance costs and improving safety.
Please refer to the PDF of the related materials for the full article.
Please refer to the PDF of the related materials for the full article.
Product advertisement published along with the article.
Product advertisement published along with the article.
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Related Documents

橋梁通信 2025年3月1日号 記事全文.pdf[3182013]

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Crittec Industries Website
Expansion Device Product Information
Crittec Industrial Website
An article titled "Proving 100-Year Durability through Fatigue Testing" published in the Bridge News.
Kritech Industries YouTube
A video of a fatigue load test proving a durability of 100 years has been released.

Related product

橋梁新聞_250101号_クリテック工業_広告_ol_イプロス用_1000-1000.jpg

Durability 100 years, expansion device, hybrid joint, type 3LII.

A bridge expansion device proven to last 100 years! No replacement needed for new bridges for 100 years! Long-term water-tightness, maintenance-free [NEXCO specification compliant product].

The Hybrid Joint 3LII type has a vertical integrated structure of the load support plate and anchor plate, making it highly durable and preventing damage from metal fatigue. Its durability is equivalent to an ultra-long term of 100 years! It has been proven through fatigue loading tests conducted by a third-party organization, clearing the equivalent of 12 million cycles, which corresponds to 100 years. This assumes that a 25-ton large vehicle has traveled over the 3LII type 12 million times, equating to a 100-year durability. The standard design supply period for bridges is 100 years. For newly constructed bridges, there is no need to replace the expansion device for 100 years. The 3LII type is maintenance-free, eliminating the need for sound inspection that requires traffic regulation, leading to reduced maintenance costs and improved safety. It is a product capable of accommodating large expansion ranges (150-350mm) and wide gaps (up to 730mm), making it one of the largest among expansion devices that have passed NEXCO standards. It has been widely adopted on highways nationwide as a product that meets NEXCO specifications. For more details, please contact us or request a catalog.

  • Bridge Materials
  • Foundation construction

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RIMG0167.JPG

Expandable device "Hybrid Joint 3LIIA type (with guide plate)"

By shaping the steel plate into a guide plate type, it prevents damage to the main body of the grader due to expansion and contraction in snowy areas.

The Hybrid Joint 3LIIA type has a vertical integrated structure for the load support and anchor plate sections, making it highly durable with almost no damage from metal fatigue. By using steel plates vertically, the exposed areas are minimized, resulting in very low impact during operation and making the product less prone to noise and vibration. It is capable of accommodating large expansion and contraction (200–600mm) and wide gaps (up to 1230mm). 【Features】 ○ Supports large expansion and contraction and wide gaps ○ High watertightness due to double sealing structure ○ Long-term durability and maintenance-free For more details, please contact us or request a catalog.

  • Joints between components

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Related catalog(2)

Crittec Industrial NEXCO Specification Hybrid Joint Catalog

Crittec Industrial NEXCO Specification Hybrid Joint Catalog

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Expansion Device [Hybrid Joint] Comprehensive Catalog

Expansion Device [Hybrid Joint] Comprehensive Catalog

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PERI products are used at construction sites around the world. (Poland: Construction work on the Dunajec Road Bridge)

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PERI products are used at construction sites around the world. This time, we would like to introduce the construction work of the "Dunajec Road Bridge" spanning the Dunajec River in the town of Nowy Targ in southern Poland. The road bridge was planned to be constructed using a balanced cantilever method, dividing the cantilever beams starting from each pier into 10 segments. A particular concern was to strictly adhere to the concrete pouring cycle for each segment. To achieve this, a balanced cantilever carriage (VBC) equipped with a hydraulic advance system and an automatic formwork stripping function was adopted. By utilizing the VBC, it became possible to pour concrete for segments up to a maximum length of 5 meters in a single cycle, allowing for efficient and timely construction. PERI products: 1. TRIO Panel Formwork 2. VARIO GT24 Wall Formwork 3. PERI UP Flex Modular Scaffold 4. VST Heavy-Duty Shoring Tower PERI Japan Co., Ltd.

Oct 12, 2026

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Aroma presentation of major purchasing specialty stores.

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At a major purchasing specialty store located in Kanagawa Prefecture, we have introduced our commercial aroma diffuser rental service "MajestaFragrance," enhancing the store's atmosphere with fragrance. Installed models: MFmini (4,400 yen per month) × 2 units Adopted fragrance: Freesia Pear To ensure that customers visiting the store can relax during their appraisal and consultation time, we have implemented space branding with a "refined and approachable scent." The fragrance used is "Freesia Pear," which pleasantly spreads the freshness of fruity pear and the vibrant aroma of freesia. It warmly welcomes customers with a clean and high-quality scent. The "MFmini" introduced this time is a compact yet powerful diffuser known for its strong diffusion capabilities. It blends smartly into limited installation spaces such as reception counters and customer service areas, efficiently delivering fragrance. At Majesta Fragrance, we offer optimal diffuser models and fragrance suggestions tailored to the size of the store, type of business, and interior atmosphere. A "free trial installation" is also available before signing a contract.

Oct 10, 2026

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CCS3 product photo

The new product "Vehicle Count Sensor CCS3" enables efficient occupancy management of large parking lots.

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Hotron Inc. has launched its new product, the "Vehicle Count Sensor CCS3"! This product is a ceiling-mounted sensor that combines infrared and radar technology. It reliably detects vehicles in both directions with a single unit, accommodating traffic during congestion and vehicle passing, thus achieving efficient occupancy management in large parking lots. Additionally, it can be utilized for exit warning purposes in addition to vehicle counting, contributing to the safe and smooth operation of parking facilities. 'Features' - Improved detection performance against changes in road surface during rainy weather by using both infrared and radar. - Equipped with IP67 waterproof and dustproof performance, making it effective even in salt damage areas. - Various settings can be configured from a dedicated app (for Android devices), with current settings easily visible at a glance. - The base dimensions are the same as the previous model "CCS2," allowing for smooth replacement of existing equipment. *For more details, please refer to the product information, catalog download, or contact us.*

Oct 09, 2026

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We will exhibit at the Osaka Industrial Exhibition 2026.

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We will be exhibiting at the "Osaka Industry Exhibition 2026" held at MyDome Osaka from October 14 (Wednesday) to 15 (Thursday), 2026. We will introduce our stress check, health management system, reservation and reception system, and interview system.

Oct 09, 2026

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Announcement of the publication of ISO-related information magazine "Intertek News" Issue 94.

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We have published the latest issue (Issue 94) of the ISO-related information magazine "Intertek News." Intertek News delivers information and various topics related to ISO audits, certifications, and verifications. The feature of this issue is titled "Understanding Standard Revisions," where we introduce key points of management system standard requirements that new personnel should first understand in preparation for standard revisions. Additionally, we have included customer case studies, contributions from auditors, and information on certifications and standards, as well as the latest topics, so please take a look.

Oct 09, 2026

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