奈良建設 List of Products and Services

The "Cross-Section Repair and Surface Protection Repair Method" is a technique that involves removing deteriorated areas of existing concrete structures and applying polymer cement mortar to restore the cross-section, thereby improving the durability of the existing concrete structures. In cases where the removal area of the existing concrete is extensive, repair and reinforcement materials such as FRP grids are placed on the surface of the concrete structure to ensure integration with the existing concrete. This method is applicable to concrete structures that have deteriorated due to salt damage, carbonation, freeze-thaw cycles, etc. 【Features】 ■ Improved durability ■ Increased compressive strength and adhesion strength ■ High filling capability ■ Enhanced rust prevention effect *For more details, please download the PDF or feel free to contact us.

• Renovation and repair methods

The "Sprayed Floor Slab Thickness Increase Method" is a technique that involves spraying polymer cement mortar to increase thickness and integrate with existing concrete, thereby improving load-bearing capacity and durability. It can be applied to reinforce damaged road bridge RC slabs and beams due to insufficient load capacity caused by changes in design loads or fatigue deterioration from wheel loads. Additionally, it is applicable for bending and shear reinforcement of RC structures such as tunnels and box culverts. 【Features】 ■ Improved load-bearing capacity and durability ■ Reduced existing rebar stress and deflection ■ Restores the slab function and significantly enhances fatigue durability ■ Possible improvements in workability and cost-effectiveness *For more details, please download the PDF or feel free to contact us.

• Renovation and repair methods

The "SRShotcrete Method" is a technique that enhances seismic performance by spraying a special polymer cement mortar to integrate with existing RC bridge piers. It can be applied to bridge piers where wrapping with RC methods exceeds the construction limits and riverbed obstruction rates, or where increased load on the pier foundation is a concern, by wrapping with a thickness of 250mm or more. By using a special polymer cement mortar that has superior strength characteristics and durability compared to concrete as the wrapping material, it is possible to reduce the wrapping thickness to about 1/5 of that of conventional RC wrapping methods. 【Features】 ■ Construction can be performed without increasing the width of the bridge pier ■ Stable construction over a wide area can be achieved in a short time ■ Fast construction speed reduces the construction period and offers excellent cost-effectiveness ■ Excellent filling performance ■ Superior adhesion to existing concrete *For more details, please download the PDF or feel free to contact us.

• Earthquake-resistant construction method