$11.46
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We've accumulated three concrete super plasticizers. This is a super plasticizer for use in portland cement products such as concrete, mortars, grouts, etc. It is one type of pozzolan performance and strength enhancer called a "Polycarboxylate", considered the most effective of all super plasticizers. There are other pozzolans besides super plasticizers that are effective with concrete, metakaolin is another one that's widely used. In recent years the use of concrete in artworks has surged. Out of that has come an interest in using concrete for jewelry, a novel juxtapositioning of material and function. Concrete calls up "solidity", "strength", "hardness", etc...a little like industrial funk. But standard concrete will not work well for very small objects like rings. Pendants maybe...
A couple of pieces of gravel from a concrete used as a foundation would be larger than the ring. Downsizing is called for. So you need to exchange gravel for medium sand, sand for powder. Portland cement, either gray or white can remain the same, as can any pozzolans.
You really need to use pozzolan(s) if you're doing very small concrete castings like jewelry. If you know something about ceramics, clay, and slip casting, you'll know what a deflocculant is. That's basically what this is, a deflocculant for concrete. It makes suspended particles in a solution more 'slippery' so they move past each other better and the solution flows better (reducing viscosity), which means you can get by with less water added to arrive at a specific viscosity. therefore hardness in the final product is increased. This is expensive stuff, but luckily only a little is needed. And if you're making jewelry your concrete batches will be small anyway.
We have two different super plasticizer's (SP), made by 2 different manufacturers. It doesn't matter that much whose SP you use, but those based on polycarboxylate ether polymers are currently the most effective. Also known as "water reducers". They increase the flow of concrete while at the same time reduce the amount of water needed. The more water that's in a concrete the more porous it will be when that water leaves. Reducing porosity increases density, hardness, and strength, it's all connected together.
Both of our SP listings are polycarboxylates. Either of the two will have more or less the same effect. This listing is for Melflux 2651 polycarboxylate ether copolymer. It is a free flowing light yellow powder. Melflux's usefulness is based on the latest polymer technology. Its main chain anchors onto the surface of the cementitious (e.g. Portland cement) binder particle while the unique comb structure side chain stretches into the water. It is a high performance superplasticizer for cement based construction materials. It can be used alone or be compounded with other additives to make custom products such as pumpable concretes. The maximum range of use is 0.05% to 1.0% by weight of portland cement. The recommended use is 0.5% to 1.0%. It provides the maximum effect in the first few hours of addition to the mix. This provides high early strength.
The list of applications given is:
--Dry concrete mix
--Non-shrink grouts
--Tile adhesives and joint fillers
--Self-leveling underlayments
--Feather edge products
--Fast setting floor screeds
--Self-leveling floor screeds
--Repair mortars
--Injection mortars
Here is some more info on super plasticizers and plasticizers in general from Wikipedia ( https://en.wikipedia.org/wiki/Superplasticizer ):
"Superplasticizers (SP's)...are additives used in making high strength concrete...
Traditional plasticizers are lignosulphonates as their sodium salt. Superplasticizers are synthetic polymers...
"Plasticizers" are chemical compounds that enable the production of concrete with approximately 15% less water content.
"Superplasticizers" (SP) allow reduction in water content by 30% or more...
SPs are used where well-dispersed particle suspension is required to improve the flow characteristics (rheology)...in concrete applications. Their addition to concrete or mortar allows the reduction of the water to cement ratio without negatively affecting the workability of the mixture, and enables the production of self-consolidating concrete and high performance concrete. They greatly improve the performance of the hardening fresh paste. The strength of concrete increases when the water to cement ratio decreases.
The addition of SPs in the truck during transit is a fairly modern development within the industry. Admixtures added in transit through automated slump management systems, such as Verifi, allow concrete producers to maintain slump until discharge without reducing concrete quality."
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Jan 19, 2024
Product as described. Fast shipping. Thank you!
Eugene
Sep 27, 2023
super for my morta cement mix
Hai Hoang
Jul 5, 2023
It is great to be able to buy this stuff without ordering a massive quantity from somewhere! This little bag will last me many months. Thank you!
David Weprin
Apr 23, 2023
Improved my cement casting game! Quick shipping. Thanks!
totallymichael