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Portland cement vs quickcrete? Help

Posted by marthaye z7bSC (My Page) on
Tue, Sep 18, 07 at 11:38

I purchased quickcrete for my projects (hypertufa). I have noticed that most people use portland. Is this different or better? I want to make leaf castings and small containers.

This would be my first project
Need advice
Martha


Follow-Up Postings:

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RE: Portland cement vs quickcrete? Help

quickcrete is a brand name.......what did you buy?
Marcia


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RE: Portland cement vs quickcrete? Help

Portland cement is the stuff you mix with sand, perlite and peat moss. Portland cement comes in the 94lb bag. I did find a hardware store that sell it in 50 lb bags.


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RE: Portland cement vs quickcrete? Help

One bag is mortar mix and one is sand/topping mix.


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RE: Portland cement vs quickcrete? Help

according to the mix recipes here at the forum

http://faq.gardenweb.com/faq/lists/hypertufa/2003030744004525.html

Recipe For Hypertufa Using A Pre-Mixed Sand Mix

The use of a pre-mix allows the beginner an opportunity to try hypertufa without a large investment in materials. Portland cement comes in 94 lb bags. Quikrete, a concrete product manufacturer, does sell a smaller bag of Portland cement, but few stores carry it. Some home improvement stores do, however, carry small bags of pre-mixed concrete mixes, such as sand mix, mortar mix, high-strength concrete mix, etc.


I encourage anyone who is STRUCK by the hypertufa bug and unsure if this is for them, to seek out the pre-mixed sand mix. Lowes (in my area) carries the Quikrete sand mix in the smaller 10# bags; they also carry a 60# and 80# bag. If you get the smaller size, you can try it without a huge investment in supplies. Dependent on the size of the bag, you may actually be able to carry it!

Once home with the bag, put the mix (still inside the bag) into a heavy hefty bag and push it around a bit. Mixes do tend to settle and you want the ingredients evenly distributed. Then take the pre-mix bag out of the hefty, and follow the directions below.

Recipe #5

1 part pre-mixed sand mix
1 part peat moss
1 part perlite or vermiculite

Mix the dry ingredients first, then slowly add water so that you can gently squish the mush with little water coming out. Now add a little bit more water and walk away for about 10 minutes. Check your mold set up or think about your next project. Then, back to the mix. Check it with your hands (of course they are gloved!) and add a bit more water, if needed.


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RE: Portland cement vs quickcrete? Help

In my opinion quikcrete mix is not a good idea. The sand premix is undoubtedly mostly sand which would make it difficult to get a good mix when the other ingredients are added. If perlite, peat moss and/or vermiculite are added for a desired texture, you could easily end up with a shortage of cement and too much sand.
In spite of the weight of a bag of cement I think you will be more satisfied and get better results and learn more with portland cement. Find someone to help move the 94lb bag. Cost should not be a problem either as cement is only $7.00 per bag.


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