Ace Restoration and Waterproofing Incorporated ACE Restoration & Waterproofing Incorporated
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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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shim_trans  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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arrow_right  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

 

Grout Resistivity Measurements

A grout-sample-filled soil box (ASTM G57-95a) was employed to determine grout resistivity. The Sikatop 123 Plus? was monitored periodically after placement in the box using 4-probe AC-impedance. From an initial value of 1,200 ohm-cm at 12 hours, the resistivity increased to over 30,000 ohm-cm after 5 days. The subcontractor’s prior validation of this material to meet the specified resistivity of less than 25,000 ohm-cm is suspect. The resistance of the Sikatop 123 Plus? grout increased steadily for months after the installation (Figure 37). Consequently, the voltage used to drive the ICCP system has risen steadily to maintain the required current. The resistivity rate of increase should diminish with the passage of more time. However, two ICCP sections already require more than 10 volts to provide 20 mA.

 

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Figure 37. Resistivity of Sikadur 123 Plus© with time.

 

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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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