Free Shipping and BOPIS

Rapid Set

Model # 81100000

Internet # 202209127

Store SKU # 134512

2.12 oz. Concrete Pharmacy Flow Control

This item has been discontinued.
The Home Depot no longer carries this specific product.

$2.25 /each




Model # 81100000

Internet # 202209127

Store SKU # 134512

Rapid Set FLOW Control has two functions. First, adding FLOW Control to your mix will significantly increase the fluidity of the mixture. Second, FLOW Control increases the strength and reduces the shrinkage of your mixture when you use the FLOW Control as a replacement for mixing water. When using FLOW Control, the same working consistency (or slump) may be produced with approximately 20 percent to 40 percent less mixing water. Use enough FLOW Control to achieve desired properties for your mix. Do not exceed 5 packets per 50 to 60 lb. bag of Rapid Set cement product. FLOW Control is designed for use with Rapid Set cement products and most other packaged hydraulic cements.

California residents: see  Proposition 65 information

  • Customize your cement mixture
  • Increases strength and fluidity
  • Convenient packets allow for easy control of dosage
  • Easy to use

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.


Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Size (oz.) 
Additive type 
Color Family 
Warranty / Certifications
Manufacturer Warranty 
1 Year Limited Warranty 


Rated 4.5 out of 5 by 4 reviewers.
Rated 3.0 out of 5.0 by Certainly boosts fluidity, but retards set I ran out of my usual plasticizer (Riteks 7000 polycarboxylate) that I use for self-leveling microtopping so I picked this up. I works well enough and boosts fluidity but not as well as Riteks. However as I write this it's been 24 hours and I've only got a very soft set - like jello and I'm very concerned. Usually by now I can stand on it, this time my foot sank in. I used 4 bags mixed in with two 80lb bags of sackrete 3-1 sand mix + 6 quarts of portland cement + 2 gallons of 50/50 acrylic fortifier/water + 14 ounces of liquid latex + 4oz (by volume) fiberglass fibers. I added another ~gallon of water during the mix. The flow control must contain a set retarder, or it reacted badly to the acrylic&latex admix. I'll update after a day or so. September 7, 2015
Rated 5.0 out of 5.0 by Makes Concrete Flooooooow I used this product with Rapidset concrete for use in a semi-complex concrete mold. I had never worked with mixing concrete before and my first attempt did not turn out well (I think I had too much water). My second attempt turned out very good. This flow control powder helped the concrete flow into the mold cavities well and I had minimal bubbles/voids in my finished product. August 3, 2015
Rated 5.0 out of 5.0 I love this stuff excellent product to achieve a smooth and pourable mixture that has less water which equates to higher strength. mix rapid set cement to thick milkshake consistency, then sprinkle in flow control to desired consistency. it's really cool to watch the thick cement mixture turn watery with just a little bit of powder. November 16, 2012
Rated 5.0 out of 5.0 by GREAT ADDITION If you need a smooth flush surface from Rapid Set concrete add this as per the directions and you can not go wrong! August 6, 2014
  • 2015-11-26 T10:16:41.138-06:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_4, tr_4
  • loc_en_US, sid_202209127, prod, sort_default
1-4 of 4