光和商事株式会社 List of Products and Services

The "Skeleton Disaster Prevention Coating" is a method that achieves a level of transparency sufficient to visually confirm cracks and surface peeling of the structure by impregnating the base material, MBS Clear Guard, with a glass continuous fiber sheet that has excellent strength. After application, it becomes possible to visually inspect the surface of the structure, allowing for pinpoint detection of areas where deformation has occurred, enabling localized repairs. Additionally, the performance of the surface protection method has been verified through rigorous testing by third-party organizations in accordance with the standards necessary for peeling prevention performance. 【Features】 ■ The concrete surface is visibly transparent ■ The fibers are soft ■ Simple work processes and materials used ■ Prolongs the lifespan of structures ■ Water vapor permeability ■ Repairability *For more details, please download the PDF or feel free to contact us.

• Other metal materials

The "IPH method" replaces the air present inside the concrete and the injected resin, allowing the resin to diffuse radially from the inside of the drilled holes, thereby filling even the finest cracks at the ends. This method not only enhances the adhesion strength between rebar and concrete but also provides a high anti-corrosion effect, leading to improved durability. It has received technical evaluation from the Japan Society of Civil Engineers. Additionally, structures constructed using this method can extend the intervals between subsequent repairs. Since the deteriorated areas are repaired and injected without being chiseled away, the amount of demolition waste is reduced, resulting in cost savings. 【Features】 ■ High-density filling ■ Rebar anti-corrosion and neutralization suppression ■ Strength recovery and durability enhancement ■ Improved cost-effectiveness and environmental measures *For more details, please download the PDF or feel free to contact us.

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The "Danby Method" is a technique for rehabilitating damaged or aging pipes in sewers, agricultural water systems, and sluice gates without excavation. A rigid PVC strip is fed into the existing pipe from a manhole, and while spirally winding it along the inner surface of the pipe, adjacent strips are joined using a fitting component to form a continuous pipe body. After that, using a spacer for injecting filler material, which is pre-installed above the existing pipe, the filler material is injected into the gap between the strip pipe and the existing pipe, resulting in a composite pipe that is integrated with the existing pipe, exhibiting high strength and water tightness. 【Features】 - Construction is possible only in the work zone on the road without excavation. - A new pipeline is formed on the inner surface of the existing pipe. - Improved chemical resistance and abrasion resistance due to the formation of a rigid PVC pipeline. - Enhanced load capacity, seismic resistance, and flow capacity as a composite pipe integrated with the existing pipe. *For more details, please download the PDF or feel free to contact us.*

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This document introduces the "Circle Cutter Method." It provides detailed information on the overview and features, non-shrink mortar reinforcement layers, high-strength adhesive internal screw anchors, etc., using diagrams and images. Additionally, it includes information on construction procedures and examples, so please take a moment to read it. [Contents (Excerpt)] ■ Overview of the Circle Cutter Method ■ Features of the Circle Cutter Method ■ Paving cutting machinery for the Circle Cutter Method ■ Road restoration structure of the Circle Cutter Method ■ Base materials *For more details, please download the PDF or feel free to contact us.

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The "PA Joint" is an embedded expansion device that does not require secondary water stopping and has seismic resistance due to its ability to expand and contract in all directions, 360 degrees. It exhibits better performance against temperature fluctuations and can accommodate a maximum expansion of up to 100mm. Additionally, the ground cover can be constructed with the same material, allowing for seamless water stopping. 【Features】 ■ Wheel tracking test: 52,500 rotations/mm ■ Durability performance is several times greater than the heavy traffic standard value of 3,000 rotations/mm ■ No need for secondary water stopping; seismic performance is also achieved ■ Ground cover can be constructed with the same material ■ Exhibits the same expansion and contraction performance in all 360 degrees *For more details, please refer to the PDF document or feel free to contact us.

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The "Concrete Keeper Series" is an inorganic lithium-based mixed-type concrete impregnation material. It features "Concrete Keeper," which primarily consists of lithium silicate combined with silane, and the topcoat material "Concrete Keeper neo." It is suitable for concrete repair and deterioration prevention. 【Features】 ■ Inorganic lithium-based mixed type ■ Concrete repair and deterioration prevention ■ Two main components block concrete deterioration in a double action *For more details, please refer to the PDF document or feel free to contact us.

• Repair Agent

"GeoBest" is a weakly alkaline soil pavement solidifying agent primarily composed of magnesium oxide that does not use cement. Japanese soil can be broadly classified into five types, and this product is capable of solidifying all soil types. Additionally, acute toxicity tests on killifish and rats have been conducted regarding its components and pH value, confirming its safety. 【Features】 ■ Environmentally friendly ■ Weed prevention effect ■ Excellent solidification performance ■ High aesthetic quality that retains the texture of the soil ■ Excellent walkability due to moderate elasticity *For more details, please refer to the PDF materials or feel free to contact us.

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"Super Shield" is a high-performance concrete waterproofing and protective material in the form of a colloidal solution, primarily composed of sodium silicate and potassium silicate. It offers new technology for extending the lifespan of concrete while reducing maintenance costs, all while protecting the natural environment. Compared to water-soluble concrete protective materials and water-repellent concrete protective materials based on silicates, it has superior durability and, through high-function self-repair, continues to protect concrete from various forms of deterioration for a long time, firmly and stably. 【Performance Characteristics】 ■ Suppression of carbonation ■ Suppression of salt damage ■ Suppression of freeze damage ■ Suppression of rebar corrosion ■ Suppression of alkali-aggregate reaction ■ NETIS Registration No. QS-150019-VE *For more details, please refer to the PDF materials or feel free to contact us.

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The "Hinodakutail Joint α" features a bolt fastening structure that significantly reduces installation time during replacement, allowing for efficient replacement. The main body is made of Hinodakutail cast iron, which possesses strength and ductility to withstand the loads and impacts from vehicle traffic. The semi-circular shape helps to distribute part of the vehicle load, thereby reducing the occurrence of asphalt pavement sinking and ruts. 【Features】 ■ Easy-to-replace bolt fastening structure ■ Product shape that reduces step differences during vehicle passage ■ Main body made of Hinodakutail cast iron with excellent material properties ■ Slip-resistant structure for safe driving even in rainy conditions ■ Water-stopping rubber with excellent deformation followability *For more details, please refer to the PDF document or feel free to contact us.

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The "Metal Road Construction Method" is a three-dimensional frame prefabricated bridge where the piles, cross beams, and main beams are rigidly connected at the nodal points. Due to its multi-column three-dimensional frame structure, it has excellent seismic resistance and can be applied to existing roads. It is easy to transport and install components even in narrow road construction in mountainous areas, making it highly efficient in terms of construction. It is composed of short and lightweight prefabricated components, which shortens the on-site construction period. Additionally, it does not require large-scale excavation or backfilling, resulting in minimal generation of surplus soil and waste. [Features] ■ Strong against earthquakes ■ Easy to construct ■ Short construction period ■ Maintains existing roads ■ Abundant track record *For more details, please refer to the PDF materials or feel free to contact us.

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This catalog introduces the "soundproof products" manufactured by Shinko Kenzai Kogyo, handled by Kowa Shoji. It features various products, including the sound-absorbing panel "Eco-Qon" made from fine porous aluminum foil, standardized "translucent panels" based on specifications from NEXCO companies, and the simple yet sharp-designed "Silence Keeper." Please make use of this when selecting products. [Contents (excerpt)] ■ Eco-Qon ■ Unified Type ■ Translucent Panel ■ Silence Keeper ■ Related Products *For more details, please refer to the PDF document or feel free to contact us.

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The "GR Series" is a product that not only meets the drainage performance required of grating but also possesses long-term durability and high safety as a structure installed on the road. Furthermore, it takes into consideration the maintenance workability for inspections and cleaning, excelling in long-term economic efficiency. We offer a lineup that includes "GR-L" for L-shaped rainwater catch basins, "GR-U" with a cast iron integrated structure, and "GR-V" for longitudinal side ditches. 【Features】 ■ Drainage performance ■ Long-term durability ■ High safety ■ Consideration for maintenance workability such as inspections and cleaning ■ Excellent long-term economic efficiency *For more details, please refer to the PDF document or feel free to contact us.

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"Re-Flex" is a nighttime reflective paint for concrete that enhances driver visibility and improves driving safety by being applied to concrete surfaces. It comes in a color that does not compromise the appearance of concrete and reflects light brightly in dark places or at night. It reflects light only in the direction of the light source, even when illuminated from various angles (retroreflective). After easily cleaning existing concrete, it can be painted without special surface preparation. Additionally, it does not require a primer or topcoat, and after air drying at room temperature, it maintains a strong film. 【Features】 ■ A color that does not compromise the appearance of concrete ■ Reflects light brightly in dark places or at night ■ Does not require a primer or topcoat, and maintains a strong film after air drying at room temperature ■ Coats the concrete surface with a special resin emulsion ■ Blocks deterioration factors *For more details, please refer to the PDF document or feel free to contact us.

• paint

The "Stamping Method" involves coloring the surface of concrete with a color hardener after pouring the ready-mixed concrete, and before it hardens, pressing a "pattern mat" with natural stone, brick, or wood patterns to create designs. By embossing, a textured pattern is created on the concrete surface, resulting in a natural finish. Additionally, because it is integrated with the concrete, it does not peel or settle unevenly, nor does it allow weeds to grow from the joints, making it highly durable. 【Features】 ■ Finishes with a natural texture ■ Excellent durability due to integration with concrete ■ Natural shading and three-dimensional effect from the release powder ■ A lineup of 12 different pattern variations ■ Resistant to tire marks and effective in preventing dirt *For more details, please refer to the PDF document or feel free to contact us.

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This document introduces "anti-slip construction using the Astes method." To reduce the number of preventable slip and fall accidents, we propose anti-slip construction on road surfaces using the "sandblasting method" and "SREM method," aiming to create a community where everyone can live with peace of mind. 【Contents (excerpt)】 ■ Removal of slip causes with sandblasting ■ Long-lasting anti-slip effect from a single application ■ Safety demonstrated with numbers ■ Equipment specifications ■ Collection of construction examples, etc. *For more details, please refer to the PDF document or feel free to contact us.

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The "Strand Sheet Method" is a repair and reinforcement technique that involves processing FRP strands, which are impregnated and cured with resin, into sheet form and adhering them to the surface of concrete structures using a specialized adhesive. The specialized adhesive serves as both a primer and a leveling material, and since there is no need to impregnate the sheet with resin, the construction period is shortened and costs are reduced. This method achieves reinforcement effects that are equal to or greater than those of conventional continuous fiber sheet bonding methods. 【Features】 ■ Short construction period and low cost ■ Simple and high quality ■ Significant reinforcement effect ■ Good construction environment ■ Excellent workability without the need for resin impregnation or degassing *For more details, please refer to the PDF document or feel free to contact us.

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This construction method involves fixing FRP lattice-shaped green panels as slope protection materials with reinforcement at the top, utilizing the tensile strength of the reinforcement to prevent slope collapse. By spraying materials such as soil onto this part, full greening, which was difficult with conventional slope protection methods, becomes possible. 【Features】 ■ NETIS Registration No. CG-010007-V ■ Lightweight at 16.8 kg due to being made of FRP ■ Easy to install ■ Significantly reduces construction time ■ High opening ratio due to lattice shape, enabling full greening *For more details, please refer to the PDF materials or feel free to contact us.

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The "Galva Shield Method" is a special product that wraps zinc in a special mortar and utilizes the potential difference of metals to prevent rusting of rebar. It can be installed in both maintenance and repair of concrete structures (such as salt damage, carbonation, and macrocell corrosion) as well as in new structures, offering a wide variety of options based on LCC and the condition of inherent salts. Additionally, the "Renderock Series" is used as a cross-section repair material. 【Features】 ■ NETIS Registration No. CB-020037-VE ■ Prevents rusting of rebar by utilizing the potential difference of metals ■ Can be installed in both maintenance and repair of concrete structures and new structures ■ A wide variety of options available based on LCC and the condition of inherent salts *For more details, please refer to the PDF materials or feel free to contact us.

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This document contains information about the "components of the drop shaft." The drop shaft construction method is a groundbreaking technique developed in collaboration with the Japan Sewerage New Technology Promotion Organization, which allows for efficient processing of high drop heights. The main features include the reduction of manhole cross-sectional area, improved durability, enhanced maintenance environment, reduced air entrainment in main lines and storage pipes, total cost reduction, shortened construction period, and improved workability, demonstrating advantages over conventional methods. [Contents] ■ Components of the drop shaft *For more details, please refer to the PDF document or feel free to contact us.*

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The "Borkurei Mat (Bentonite Waterproof Sheet)" is an environmentally friendly waterproof sheet made from natural sodium-type bentonite sourced from Wyoming, USA. It is widely used as a waterproofing material for biotopes, reservoirs, and waste final disposal sites. Due to its natural material (inorganic), it is expected to provide stable waterproof performance over the long term, and pinholes are prevented from leaking due to expansion. It can be used as a waterproof layer in various applications such as reservoirs, final disposal sites, and rivers. 【Features】 ■ Excellent waterproofing ■ Semi-permanent durability ■ Damage-resistant self-repairing properties ■ Needle punching to prevent loss and unevenness ■ Environmentally friendly natural bentonite *For more details, please refer to the PDF document or feel free to contact us.

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"Aqua Tail 35" is a river structure that complies with the "Ministry of Land, Infrastructure, Transport and Tourism River and Erosion Control Technical Standards," featuring a wall thickness of 35 cm and a simple joint shape. It is designed with a focus on simplifying the wall shape, components, and construction for river and coastal structures. Compared to the previous underwater tail arm "Color Wall Method," it achieves labor and material savings. Additionally, the precasting of wall components eliminates the need for scaffolding, resulting in reduced construction time and overall cost savings. 【Features】 ■ NETIS Registration No. CG-10020-A ■ Increased wall thickness ensures stability against flowing water (suitable for salt damage areas) ■ Use of wide strips reduces the extension of reinforcement materials ■ Improvement in embankment layer thickness reduces the total number of rolling passes (layer thickness from 25 cm to 30 cm) ■ Exceptional stability reduces the need for fine adjustments during construction *For more details, please refer to the PDF materials or feel free to contact us.

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This is a construction method ideal for replacing iron covers, characterized by speed, recyclability, and low cost. The weight of the cutter machine is 20 kg, and since it is dry, the asphalt dust generated after pavement cutting is collected and recycled using a dust collector. By using jigs for corner covers, the pavement cutting results in no leftover cuts, with the corners enclosed by arcs. Additionally, recycled materials such as steel slag are used, allowing for traffic release at each location with cold rapid-hardening pavement materials.

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During the installation of sewer connection pipes and public manholes, it is necessary to dig horizontal and vertical holes. However, due to the complex site conditions, the current situation relies heavily on manual labor, making labor-saving at the site a pressing issue. The Multi-Mole method utilizes "TonTon-kun" and "BuruBuru-kun" to mechanize horizontal pushing and vertical excavation. In addition to standalone use, it also allows for the joining of horizontal and vertical operations. The Multi-Mole method significantly improves not only labor-saving but also safety and construction quality.

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"Towards a Circular Society: Easy Eco Activities You Can Do at Home" This is our company's home-use worm composting container. Worm composting utilizes the power of earthworms and microorganisms to ferment and decompose kitchen waste (organic matter) without producing unpleasant odors, resulting in high-quality compost in the most natural way possible. Kitchen scraps such as peels, damaged parts, and leftovers may seem like smelly waste, but they are not "garbage"; they are originally nutritious food and a valuable resource. The excrement of earthworms is rich in components such as amino acids, phosphoric acid, nitrogen, calcium, magnesium, minerals, and enzymes, which are ideal for soil improvement. When mixed into the soil, it helps grow safe, delicious vegetables. "From Waste to Organic Compost" Because they are living creatures, earthworms connect to emotional education and make it enjoyable to continue this practice. Each person's actions can change the community and the future. Why not start a nature-friendly cycle for the sake of our precious children who will carry the future? We will continue to confront environmental issues head-on and develop new businesses as a company that is kind to the Earth.

• Hazardous material processing