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26 July 2019 - 16:48, by , in concrete repair, Waterproofing, Comments off
Introduction to Thermography Principles Thermal imagers operate based on infrared thermography principles. A thermal imager is used as a cost-saving, and often money-making, test tool for troubleshooting, maintenance and inspection of electrical systems, mechanical systems, and building envelopes. Infrared Thermography Infrared thermography id the science of using electronic optical devices to detect and measure radiation...
26 July 2019 - 14:47, by , in concrete repair, Concrete Strengthening, Waterproofing, Comments off
The use of epoxy resins by injection or just by sealing constitutes the most common solution for cracks repair. However, epoxy resins products are not able to fix properly all cracking problems, such as active cracking or in the presence of moisture. For this purpose, the existence of polyurethane and acrylic resins is a good...
25 July 2019 - 16:34, by , in concrete repair, Concrete Strengthening, Waterproofing, Comments off
Introduction BS EN 1504 – standards for products and systems for the protection and repair of concrete structures – definitions, requirements, quality control and evaluation of conformity provides a comprehensive set of standards for concrete repair. The 10 documents which form BS EN 1504 are complex and provide information not only to those specifying and...
25 July 2019 - 11:55, by , in concrete repair, Concrete Strengthening, Waterproofing, Comments off
The Sika® Injection Systems for the different Applications Waterproofing of Construction Joints Sealing of construction joints in concrete structures Sika® Injection-29 Low viscous, flexible and solvent-free polyacrylic injection resin with a high solids content. It is used for the injection of the Sika® Injectoflex Hose System. Sika® Injection-2011 Low viscous, flexible and solvent-free polyurethane injection...
23 July 2019 - 10:21, by , in concrete repair, Concrete Strengthening, Waterproofing, Comments off
Repair Strategy Material selection Method selection Support Design Safety Precaution Costs Logistics   Process Re-bars – Undercutting – Cleaning – Repair – Protect Concrete – Surface preparation – Bonding – Apply new material   Performance Requirements of Concrete Repair Protection of Rebars Aesthetics Integrity and Compatibility (with substrate) Carry loads Waterproofing   Repair Systems Selection...
21 May 2019 - 17:24, by , in concrete repair, Comments off
Causes and Types of Cracks Introduction It is fundamental that hardened reinforced concrete cracks in the tensile zone when subjected to externally imposed structural loads. By means of appropriate design and detailing techniques, these cracks can be limited to acceptable levels in terms of structural integrity and aesthetics. Concrete is also liable to crack in...
21 May 2019 - 10:58, by , in concrete repair, Comments off
Inspection and Assessment Introduction An inspection and assessment is normally undertaken to determine the cause(s) of the cracks in order to determine the effective remedial strategies. If the assessment on why the crack has formed is incorrect, the selected method of repair may not work. Hence, it is important to have the cause diagnosed correctly....
2 April 2019 - 9:57, by , in concrete repair, Concrete Strengthening, Comments off
Rather than rip out old concrete and steel and installing new material, technology may be the solution in some cases. Using a number of case studies, two keynote speakers showed how new and innovative technologies —and some that have been available for a while but are now becoming more popular — are changing their industry....
25 February 2019 - 16:25, by , in concrete repair, Concrete Strengthening, Comments off
Abstract. Building extension in Indonesia is not favored, and not many people know the advantages of the method because architects and engineers tend to lack the knowledge and experience. The aim of this paper is to explain a method on how to strengthen a concrete building structure that people can use/learn as a better way...