Smart and Bright

CFRP strengthening service for enhanced structural stability – using carbon fiber sheets.

KIS International School Pathum Thani — Lotus Building Crack Repair & Column Strengthening with SmartInjection EP21 and SMARTFIBER SHEET UT70-30 · SmartCoating
Crack Repair + Column Strengthening · International School · Thailand's #1 CFRP

KIS International School Lotus Building

Crack repair with SmartInjection EP21 and full-height column strengthening with SMARTFIBER SHEET UT70-30 — reducing structural sway and elevating safety standards for this educational facility.

EP21
Pressure Epoxy Injection
NDT
Quality Verification
#1
Thailand's #1 CFRP

Project Gallery

Project Overview

The Lotus Building at KIS International School in Pathum Thani exhibited extensive cracking and column sway caused by lateral loading, compromising the overall structural integrity. Left unaddressed, these deficiencies posed escalating safety risks to the educational facility.

Smart and Bright Co., Ltd. carried out a comprehensive structural rehabilitation programme using SmartInjection EP21 high-pressure epoxy injection to seal cracks and restore concrete monolithicity, followed by full-height column wrapping with SMARTFIBER SHEET UT70-30 to increase shear capacity, reduce sway, and raise the building's long-term safety standard.

Strengthening Objectives

  1. ▸

    Seal cracks and restore column monolithicity — inject SmartInjection EP21 to fill all crack voids and prevent future propagation.

  2. ▸

    Increase column load-bearing capacity — wrap SMARTFIBER SHEET UT70-30 around columns to strengthen shear and bending resistance against lateral loading.

  3. ▸

    Reduce structural sway — restrain lateral column movement to improve the overall stability of the building.

  4. ▸

    Elevate building safety and service life — restore structural integrity to the educational building without demolition or reconstruction.

Installation Process

  1. 1

    Engineering Inspection of Cracks and Structure

    The engineering team surveyed and recorded all crack locations, assessed the extent of damage and column sway, analysed lateral loading as the root cause, and planned the repair sequence prior to strengthening works.

  2. 2

    SmartInjection EP21 Injection Along Crack Lines

    Injection ports were installed along all crack lines, then SmartInjection EP21 high-pressure epoxy was injected to fill every void, restore the monolithic behaviour of the reinforced concrete, and halt further crack propagation.

  3. 3

    Surface Preparation & SMARTFIBER SHEET UT70-30 Column Wrapping

    Column surfaces were ground and cleaned to ensure bond readiness. SMARTFIBER SHEET UT70-30 was then wrapped around each column along its full height using high-quality epoxy adhesive, increasing shear capacity and reducing lateral sway.

  4. 4

    Strength Verification by NDT

    Non-destructive testing was carried out at all repaired and strengthened locations to confirm the completeness of epoxy injection and CFRP bond integrity, certifying that the structure meets the required safety standard.

Strengthening Materials Used

1

SmartInjection EP21 — High-Pressure Epoxy Injection for Crack Repair

A high-quality epoxy pressure injection system designed to completely fill cracks in reinforced concrete, restoring structural monolithicity and preventing long-term crack propagation.
  • High-pressure epoxy — fills cracks of all widths
  • Restores concrete monolithicity
  • Prevents further cracking and moisture ingress
  • High bond strength, long-term durability
2

SMARTFIBER SHEET UT70-30 — Column Wrapping for Shear Strengthening

High-strength unidirectional CFRP sheet applied as a full-height column wrap to increase shear, bending, and compressive capacity while enhancing concrete column ductility and reducing lateral sway.
  • Full-height column wrap (Full Column Wrap)
  • Increases shear capacity and reduces sway
  • Enhances concrete column ductility
  • Lightweight — fast installation with no building closure required

Project Results

🏛
Stable
Columns restored to full structural strength meeting engineering standards
📉
Sway Reduced
Lateral sway from horizontal loading effectively controlled
🏫
Safe
Building safe and continuously operational for education
🔬
NDT Passed
All repaired and strengthened areas verified by non-destructive testing
🏗
No Demolition
Works completed without building closure or structural demolition
🏆
Best Practice
A benchmark example of strengthening works for educational buildings