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Rock pocket / Honey combing in concrete

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     John,
     
     A good resource publication is "Concrete Repair and Maintenance 
     Illustrated", by Peter H. Emmons, R.S. Means Company, Inc.  This book 
     is broken down into five sections.  Part One covers Concrete Behavior 
     such as disintegration mechanisms, moisture/thermal effects, 
     honeycomb/rock pockets, etc.  Part Two covers Concrete Evaluation 
     which is mainly testing procedures.  Part Three covers Surface Repair 
     such as material requirements, surface preparation, and placement 
     methods.  Part Four covers Strengthening and Stabilization and Part 
     Five covers Protection.
     
     Thomas Hunt, S.E.
     Fluor Daniel


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Subject: Rock pocket / Honey combing in concrete
Author:  John Buchanan <jjb(--nospam--at)scruznet.com> at fdinet
Date:    11/3/98 12:11 PM


Hi
     
I have a situation where the contractor poured a concrete grade beam and 
upon stripping the forms there are a couple of places where the concrete 
was not consolidated properly. The rock pockets do not extend completely 
through the grade beam. They penetrate approximately 2" into the width of 
the beam and encomopass approximately 18" x 6" area.
     
Are there publications available which might give some guidence on how to 
restore the structural integrity of the grade beam?
     
Since the rock pocket is minor in nature, is there cause for concern?
     
any help, advice will be appreciated
     
John Buchanan