1 LB Melflex 2651 F SuperPlasticizer. Concrete Admixture, High Range Water Reducer. High-Performance Super plasticizer Concrete Additive for Superior Strength, Workability & Durability

Just learning about cement and plastsuzing works for my needs. Glad I took the chance to learn works for my sculpting projects

Making pavers with ready mix concrete and before using this they were weak and crumbling. With this plasticizer you don’t need very much water which makes them much stronger

Worked well for my outdoor kitchen countertop project. Recommend mixing concrete first then slowly adding plasticizer while continuously mixing. It seemed to work to get a consistent blend quicker. I used zipper-type sandwich bags to hold my premeasured amounts. Using the bags on a small food scale, I measured 101g per 60lb bag of cement which worked out to 0.38% by weight (based on other reviews suggestions). This 1lb order allowed me to mix 12 60lb bags of cement with just a little left over. Worked well, but the measuring portion took a while. Overall it was worth it since I was after consistent workability for my countertop project.

While the water reducing effect is great, the extreme reduction in setting time that this caused made it unusable for me. Concrete that normally had a working period of 30 minutes was fully set in 10. Trying to fill a form that holds 3 bags of concrete wasn't possible, as the first was set before I could shovel the second one in. I didn't realize that polycarboxylic superplasticizers had this effect before trying it, but now that I know to look for it the information is easily found with a web search. So I guess that's on me, not this product.To add to the chain-letter review thing going on here: using the description's recommendation of 0.5%-1% plasticizer to cement, this 1lb bag is good for 10-20 bags of concrete mix. There is about 10lbs of cement in a 60 lb bag of concrete. 1% of 10lbs is 1\10th of a lb, 0.5% of 10lbs is 1\20th of a lb.