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Re: Fiber Reinforced Masonry Grout

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I forgot to mention that this was for spall repair of the existing concrete walls and roof structure.  This product was not considered for the CMU grout.  Also, with the volume being considered, std grout will be quite a bit cheaper than this stuff.  As Mr. Sprague and Mr. Cain has mentioned, it is not recommended to use "fuzzy" concrete to replace steel reinforcing, particularly in this application.

Christopher Haffner <chaffner(--nospam--at)> wrote:
Two questions:

I have a client that has requested the use of fiber reinforced grout to
reinforce an un-reinforced hollow core masonry wall in lieu of using normal
grout and mild steel reinforcing. Has anyone used this type of grout and if
so what was your experience?

We are reinforcing an existing un-reinforced masonry concrete block wall
(not normal CMU block but somewhat similar characteristics) building and
need to get some reinforcing inside the voids and grout the reinforced cells

Does anyone have a suggestion (trick) on how to physically get mild
reinforcing bars inside the 7.5"x12" voids (yes - they are a weird size in a
weird system) prior to grouting? This is why the fiber grout is being


Haffner Consulting Engineering
Office & Fax: 541-478-3052

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