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Concrete Countertop Series #2: No progress, just gathering information

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Blog entry by Siegel_KenEvil posted 1334 days ago 3402 reads 1 time favorited 8 comments Add to Favorites Watch
« Part 1: 1st Entry Part 2 of Concrete Countertop Series series Part 3: Waiting for the concrete »

Yesterday I ordered the concrete mix from Lowes. Tried to find plasticizer there but they didn’t know what I was talking about. I then whet to Home Depot and found some under the name “water reducer”. Neither Lowes or Home Depot had color charts for Quikcrete’s color additives so I have an e-mail into Quickcrete to try to get one.

This link has a lot of information about reinforcing concrete but I’m having trouble finding the products in small quantities. http://www.concretenetwork.com/glass-fiber-reinforced-concrete/

I’ll probably use some kind of small diameter wire mesh. Here’s a response from the president of the concrete countertop institute about hanging reinforcement;

“Hello Scott,

Thanks for contacting us. Reinforcing should never be pushed into fresh concrete (cement is not concrete, it’s an ingredient). Pushing the reinforcing into the concrete will cause ghosting, and the pattern of the reinforcing will be evident on the face of the concrete slab. This is often permanent and generally viewed as undesirable.

Before filling the forms simply hang the reinforcing from stiff pieces of wood, metal rods or other objects that are laid across the open forms. Use wire or cable ties (nylon zip ties) to hang the reinforcing at the correct depth. Pour the concrete through the holes in the reinforcing grid. It’s important to pour it between the reinforcing wires and not over them. If the concrete is poured over the ladder wire it may ghost.

In the videos you see the students assembling the reinforcing in the empty forms. The reinforcing is not placed in the bottoms of the forms and the countertops are cast upside-down, not right side-up.

Hope this helps,

Thanks,

Jeffrey Girard, P.E.
President
The Concrete Countertop Institute
Raising the standard.
www.ConcreteCountertopInstitute.com
888-386-7711 phone
919-882-9700 fax”

If I have time tonight, I’ll make the templates shown below,


This will be used to make sure I have the correct thickness on the sides of the integrated sink.


This will be used to form the o-ring groove and bolts

-- Scott



8 comments so far

View rustfever's profile

rustfever

619 posts in 1896 days


#1 posted 1334 days ago

I commend you for your willingness to try something new. Being a professional in the concrete business, I have gathered a great deal of information and knowledge regarding cement, concrete, and related add mixes.

I have spent 35 years as a specialty concrete contractor, perfomring all phases of concrete work. I have been a mix designer, form builder, re-inforcing fabricator and installer, concrete placer, vibrator operator and concrete finisher. But I would never try to do what you propose, without help from those who perform this specialty.

-- Rustfever, Central California

View Siegel_KenEvil's profile

Siegel_KenEvil

114 posts in 1424 days


#2 posted 1334 days ago

LOL, give me about a year and I’ll be the specialist you call. JK

-- Scott

View rivergirl's profile

rivergirl

3198 posts in 1424 days


#3 posted 1334 days ago

Check out this short video for concrete sink with river rock. :)

http://www.beinggreenonline.com/featured-videos/river-rock-and-concrete-sink

-- Homer : "Oh, and how is education supposed to make me feel smarter? Besides, every time I learn something new, it pushes some old stuff out of my brain."

View lightweightladylefty's profile

lightweightladylefty

2583 posts in 2298 days


#4 posted 1334 days ago

Scott,

When I worked for an industry leader in concrete technology 25 years ago, the products you mentioned were called superplasticizers and fibermesh. The examples of use of fibermesh that I witnessed did not leave a perfect surface as you would want for your vanity top. Wire mesh would probably be easier to embed evenly.

We wish you success with a very challenging project.

L/W

-- Jesus is the ONLY reason for ANY season.

View Siegel_KenEvil's profile

Siegel_KenEvil

114 posts in 1424 days


#5 posted 1333 days ago

Oh, this is stupid. I e-mailed Quikrete yesterday. I didn’t receive a response so being the impatient person I am, I called them. The good news is that I got through right away. No, “press 1 for english” or anything like that. That bad news is they don’t have any information regarding their color additives.

I understand that a color chart may be misleading and I would not expect my results to match but give me something. Really, I’m … I don’t know what to say. Why wouldn’t you have a color chart if you are selling colors?

Oh well, I guess I’ll learn. Maybe after I mix up a batch, I can document the exact mixture, take a picture, and sell it back to Quikrete so they know what they are selling. Apparently they haven’t thought of it. JK

-- Scott

View rivergirl's profile

rivergirl

3198 posts in 1424 days


#6 posted 1333 days ago

Did you read the article on coloring concrete I posted above? There are some examples in there.

-- Homer : "Oh, and how is education supposed to make me feel smarter? Besides, every time I learn something new, it pushes some old stuff out of my brain."

View Siegel_KenEvil's profile

Siegel_KenEvil

114 posts in 1424 days


#7 posted 1333 days ago

Yes I did. I’ve got that page bookmarked. Great site and worth re-posting if anyone reads this.

http://www.stainedfloor.com/

Those are stains. Combining those with all the options color additives provide results in a ton of possibilities. My heads spinning.

-- Scott

View rivergirl's profile

rivergirl

3198 posts in 1424 days


#8 posted 1332 days ago

I believe the stain is the same thing as mixing for color inside the crete. Check the color pigment ingredients when you purchase them- or ask the manufacturer for an ingredient list. It can’t be paint, so the pigments are most likely a salt/mineral type compound.

-- Homer : "Oh, and how is education supposed to make me feel smarter? Besides, every time I learn something new, it pushes some old stuff out of my brain."

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