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We would like to introduce a case where the issues of subsidence and voids in concrete paved roads were resolved using the Teratec method. The "Teratec method" is a technique that allows for the filling of "voids" beneath concrete paved roads caused by ground subsidence and groundwater, enabling the quick correction of dangerous "differentials and bumps" in the road surface. [Issues] In the concrete paved road within a tunnel on a national highway in Shizuoka, differentials and bumps were occurring. [Reason for Choosing Teratec] Due to the short duration of the national highway maintenance and repair work, conventional methods were not feasible, so we were looking for a method that could be implemented in a short time. The Teratec method was adopted because it allows for the correction of differentials in a short construction time. [Feedback After Construction] We were able to complete the work over an area of 115m2 in 2 days (from 9 PM to 6 AM the following morning). [Case Summary] ■ Concrete paved road within a national highway tunnel - Location: Shizuoka Prefecture - Construction area: 115m2 - Construction period: 2 days (from 9 PM to 6 AM the following morning) *For more details, please refer to the external link page or feel free to contact us.

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We would like to introduce a case where the Teratec method solved issues related to subsidence and voids in asphalt paved roads. 【Issues】 As a result of conducting a void investigation on aging roads in Tokyo, abnormal values indicating voids were confirmed at nine locations. 【Reason for Choosing Teratec】 In order to carry out the construction, it was necessary to meet the following conditions, all of which were satisfied by Teratec: - Use of lightweight materials to suppress re-subsidence - Minimizing traffic restrictions as much as possible - Material strength exceeding that of fluidized treated soil (300KN/m2) 【Feedback After Construction】 Multiple locations could be filled in one day, and the time for traffic restrictions was minimized, allowing for efficient progress of the work. 【Construction Details】 ■ Drilled confirmation holes to assess the void situation ■ After drilling injection holes, inserted injection pipes and injected Teratec resin ■ The injected resin expanded to fill the voids ■ The expansion force during the reaction compacted the surrounding loosened ground *For more details, please refer to the external link page or feel free to contact us. Toll-free number: 0120-873-835

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We would like to introduce a case where the problems of sinking and voids under bridge approach slabs were resolved using the Teratec method. The "Teratec method" is a technique that fills the "voids" under bridge approach slabs caused by ground subsidence or groundwater, allowing for the restoration of road functionality to a healthy state in a short period of time. 【Problems Encountered】 On a national highway in Ibaraki Prefecture, voids had developed under the approach slabs due to the Great East Japan Earthquake. The dimensions of the approach slab were 8m x 8m, with a maximum void thickness of about 10cm. Restoration was necessary for safety reasons. 【Reasons for Choosing Teratec】 - Short construction period, which reduces stress for road users due to traffic congestion. - The lightweight materials help suppress re-sinking. 【Feedback After Construction】 Traffic regulations allowed for alternating one-lane traffic, and the construction was completed in one day during daylight hours. The construction vehicle used was a 4-ton truck (L=5.6m). Compared to conventional methods, this was a small-scale project that was completed quickly. *For more details, please visit the external link page or feel free to contact us. https://teretek.jp/plus/case/bridge Toll-free number: 0120-873-835

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We would like to introduce a case where the issues of subsidence and cavities at the airport were resolved using the Teratec method. The "Teratec method" is a technique that corrects "steps," "tilts," and "subsidence" that occur in the concrete floors of airport aprons (parking areas), hangars, and concrete paved taxiways, without stopping operations for a short period of time. 【Issues】 At the airport apron, subsidence and warping occurred, leading to changes in the water gradient, which resulted in the formation of puddles in some areas, creating a dangerous situation. 【Reasons for Choosing Teratec】 - Repairs can be made while measuring in millimeters in a short time. - The construction is completed quickly. 【Feedback After Construction】 We received feedback stating, "It was good that the cavities were filled at the same time, considering safety in operations." *For more details, please refer to the external link page or feel free to contact us. Toll-free number: 0120-873-835

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●What is the Teratech Method… It is a patented method that involves injecting rigid polyurethane foam "Teratech resin" under concrete floors to fill voids and level sunken floors using its expansion force. Since it does not require breaking the floor, operations can continue without moving shelves or machinery! ▼Various issues we have resolved 【Tilt】 - Struggling with uneven factory floors. Want to make the concrete floor flat. - The warehouse floor has sunk in a bowl shape, causing vibrations during forklift operation. - The area where machines are installed has sunk, causing tilting of the machines. 【Subsidence】 - Found tilting in the foundation, making repairs impossible. - The concrete floor of the school gymnasium has sunk, except for the underground beams. - There are depressions on the warehouse floor, raising concerns about product storage and worker safety. 【Step Differences】 - There are step differences in the floor, causing product defects such as loads falling. - There is a step at the entrance of the refrigerated warehouse, making it difficult for forklifts to pass. 【Hollows and Gaps】 - The vibrations from the machines have worsened. I would like to check for any voids. - Cracks have appeared under the floor. We are struggling with corrosion of stored items and pest infestations. - Due to flooding, the soil under the concrete has been washed away, creating voids.

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Cracks and unevenness in the floor, tilting and sagging of the floor, and vibrations from machinery. Have you been neglecting these issues even though you are aware of them? Before they affect your operations, Mainmark visualizes hidden floor problems through three investigations. ■ Three Investigations to Visualize Floor Issues 【Void Measurement Survey】 We drill several holes of about 10 mm in the concrete floor and use an endoscope to measure the thickness of the concrete floor and the volume of voids beneath it. In addition to understanding the current situation, we perform measurements necessary for construction planning, such as calculating the amount of resin to be used. 【Level (Settlement) Survey】 Using surveying equipment, we measure the height of the concrete floor and quantify the amount of settlement and sagging. The measured values are used to set target values for corrections and to create construction plans. 【Vibration Survey】 We install high-sensitivity vibration sensors on the floor in areas of concern and measure minute vibrations. This allows us to predict the vibration reduction effects of void filling and understand the vibration reduction effects after construction. If the survey results show no issues with voids or settlement, you can continue to use the floor with peace of mind. If any problems are found, we will provide suggestions for improvements. We recommend starting with a survey to understand the current situation. Toll-Free Number: 0120-873-835

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We provide technical support for construction work such as settlement correction at overseas factories of Japanese corporations. Our Japanese staff will assist you from investigation and construction planning to construction management, ensuring that the quality of construction is the same as in Japan. For more details, please contact us by phone. Toll-free number: 0120-873-835

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