Ace Restoration and Waterproofing Incorporated ACE Restoration & Waterproofing Incorporated
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Recent Projects

Featured Projects

Naval Air Station

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shim_trans  Summery
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shim_trans  Objective
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shim_trans  Project Background
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shim_trans  Scope of Work
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shim_trans  Bravo 25 Description
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shim_trans  Overview
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shim_trans  Crane Rail Removal
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shim_trans  Loss of Transverse
 Negative Moment
 Capacity over the
 Outboard Crane Rail
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shim_trans  Concrete Repair
 Materials
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shim_trans  Top Deck
 Repair Procedure
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arrow_right  Under Deck Repairs
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shim_trans  Cathodic Protection
 System
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shim_trans  Cathodic Protection
 System Installation
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shim_trans  Grout Resistivity
 Measurements
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shim_trans  Reinforcing Steel
 Lead Wire Installation
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shim_trans  Upgrade Reinforcement
 Introduction
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shim_trans  Analysis of Bravo-25
 Load Response
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shim_trans  Calculation of
 Bravo 25 Resistence
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shim_trans  Modes of Failure
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shim_trans  Bravo 25
 Upgrade Design
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shim_trans  Concrete Surface
 Preparation
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shim_trans  Embedded
 Reinforcement
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shim_trans  Wet Lay-up
 Composite Laminate
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shim_trans  Proof Tests using
 Impact Load Method
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shim_trans  Costs
 Acknowledgements
 References
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Turbine Deck Load Capacity Restored


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Home > Featured Project > Pearl Harbor

Featured Project

 

Under Deck Repairs

Unsound concrete as well as built-up patches were removed and were abrasive-blasted using copper slag grit (Figure 23). The repair areas were filled using Sikatop 123 Plus? and their surfaces were restored flush to the bottom of the deck. The contractor used dry packing procedures to apply the concrete repair mix on the underside of the deck (Figures 24 and 25). Dry packing is a repair method of placing zero-slump or near zero-slump, concrete or mortar by ramming it into the surface cavities. This method is appropriate for the small depth cavity repairs typical of the areas below Bravo 25.

 

A sufficient amount of component B was added to make a mix consistency that could be hand-molded into a ball. Mixture control is critical to make a sound, solid pack, with minimum shrinkage and failure. The “pot life” of a mixture is limited to as little as 15 minutes. Small volumes were mixed for adequate placement time before the mixture starts to set. The addition of water was never allowed to increase the workability of the mixture.

 

A bonding agent consisting of neat cement was applied between the original concrete and repair material to promote good bond. Epoxy bonding agents were not allowed. Dry pack repair was placed in layers of approximately 1 inch thick. The layers were manually compacted over the entire area with a hardwood stick and a hammer to increase the density of the repair material and to improve contact with the substrate concrete. A minimum thickness of ½-inch of Sikatop? 123 was approved.

 

Two coats of curing compound (Sonneborn? Cure and Seal) were sprayed on all repairs as soon as the surfacing was finished.

 

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Figure 23. Unsound concrete removed from area for repair.


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Figure 24. Dry pack method of concrete repair.


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Figure 25. Handpacking Sikatop© 123 into repair area.

 

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ACE Restoration & Waterproofing, Inc.
620 E. Walnut Ave.
Fullerton, CA 92831
714.526.7366
Fax: 714.526.7965

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  ACE Restoration and Waterproofing Quick Service Overview:
  Concrete repair; concrete restoration, structural upgrade, epoxy injection,
  waterproofing, and more concrete technologies in Fullerton California (CA)
  by ACE Restoration and Waterproofing.

  Concrete Repair, Concrete Restoration, Epoxy Injection, Waterproofing

http://www.acerestoration.net/

 

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