Add small amounts of additional water** until concrete mix resembles that of thick oatmeal. Combine mix water with concrete, and begin mixing. In clean 5-gallon bucket, add 2 quarts of clean water, add in 2 Tablespoons of Riteks SP7000 Superplasticizer, and add the 2 lbs. Polyplex with mix water prior to combining with concrete. AR Glass Fibers (about a golf-ball sized portion) - SOLD HERE 2 Tablespoons Riteks SP7000 Superplasticizer/Water Reducer - SOLD HERE 2 lbs. of Portland Cement from the Basic Concrete Countertop Mix). bag of standard concrete mix (from your local hardware store of choice) 5 lbs. Supreme Concrete Countertop Mix: (by Expressions LTD) 1x 80 lb. Here is the recipe from Expressions.Looking forward to what you all think. Sorry this is so long.Any help you can offer from your own experiences would be appreciated. My question is this.have any of you had experience with putting cement in a tree? I asked if he could use insulation expanding foam and he told me the squirrels would chew it out of the tree and I have tons of ornery squirrels around here. Third guy also said it didn't need to be taken down but the cement wasn't needed to fill the holes. The second fellow said he could put cement in the cavities and it would heal over and after he took a lot of weight off by trimming the heavy limbs that the tree would be fine. The first fellow said it couldn't be saved, had to be cut down (I could have cried) and the cost would be over $3,000. My 35 year old silver Maple in the front yard (focal point for the house and provides a lot of shade)has two holes where limbs were removed about 13 years ago. I had three tree trimming companies come out to give me estimates on tree work.

How to patch a hole in an oak tree