This is a composite waterproofing method for road bridge decks that uses the penetrating waterproof material "TS Guard" in combination with the asphalt heating type coating waterproof material "Deck Coat ND."
The TS Guard method is a composite waterproofing system that involves applying the acrylic resin-based penetrating waterproof material "TS Guard" followed by the asphalt heating type "Deck Coat ND," creating a more robust waterproofing effect with a two-layer coating. TS Guard penetrates and hardens within the concrete deck, making it a two-component reactive waterproofing material that can repair even fine cracks. By adding a curing accelerator, it can progress to the next stage in a short time even at low temperatures (5°C). Deck Coat ND allows for speedy and seamless waterproofing construction, characteristic of heating types, and has high adhesion and durability to asphalt pavement. By combining these two types of waterproofing, this method exhibits enhanced waterproof performance.
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basic information
■ This waterproofing method complies with the quality standards for basic verification of the NEXCO specifications "Pavement Construction Management Guidelines Grade I," "Guide to Waterproofing of Road Bridge Decks," and performance verification of the "Design and Construction Guidelines for Steel Road Bridges in Hokkaido." ■ It forms a seamless waterproof layer without joints, which is a characteristic of membrane-type waterproofing materials. ■ The penetrating waterproofing material infiltrates fine cracks in the substrate and demonstrates higher waterproofing performance compared to conventional methods on deteriorated deck slabs. ■ High-quality modified asphalt ensures excellent durability. ■ The composite waterproof layer has tensile properties that can adequately respond to various movements occurring in the deck slab. ■ It possesses low-temperature flexibility and can be used over a wide temperature range. ■ Blistering (such as bulging) due to asphalt paving is relatively minimal, allowing for the formation of a stable waterproof layer.
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Applications/Examples of results
Waterproofing work for road bridge deck slabs.
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Company information
Tajima Roofing Co., Ltd. was established in 1919 by its founder, Takechou Tajima, in Mikawashima, Tokyo, as a company manufacturing and selling asphalt waterproofing materials for construction. In response to market needs, the waterproofing business offers a diverse range of products, including PVC sheet waterproofing and urethane waterproofing materials, while the flooring business provides vinyl flooring sheets and carpet tiles. By honing the expertise of each business, the company has developed significantly, leveraging its uniqueness as a strength and establishing a comprehensive system as a manufacturer of waterproofing materials and flooring. The high functionality and technical skills cultivated in the waterproofing business for buildings and housing protect structures from wind and rain, while the design quality and environmentally friendly standards refined in the flooring business create comfortable living spaces. By utilizing the strengths of each business, the company continues to advance product development and take on challenges in a wider range of fields.
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