Jeff what exactly is the difference between a HRWR and a superplastisizer??? I havent gotten to the bottom of this. But they seem to do similar things.
Water reducers are a class of admixture that permits less water to be used in concrete in order to maintain a given level of workability. High range water reducers (HRWR) are simply more potent water reducers that allow for a greater level of water reduction. Superplasticizers are, for all intents and purposes, HRWR's. Often the confusion between the different names stems from the two different ways they can be used. Water reducers, including HRWR, are often used to reduce amount of mix water needed to maintain a given slump. Superplasticizers are often used to increase workability while maintaining a constant mix water amount. It's a matter of symantics, really. Your experience shows that they are basically the same thing.
2 Comments:
Jeff what exactly is the difference between a HRWR and a superplastisizer??? I havent gotten to the bottom of this. But they seem to do similar things.
By
Anonymous, at 10:51 PM
Water reducers are a class of admixture that permits less water to be used in concrete in order to maintain a given level of workability. High range water reducers (HRWR) are simply more potent water reducers that allow for a greater level of water reduction. Superplasticizers are, for all intents and purposes, HRWR's. Often the confusion between the different names stems from the two different ways they can be used. Water reducers, including HRWR, are often used to reduce amount of mix water needed to maintain a given slump. Superplasticizers are often used to increase workability while maintaining a constant mix water amount. It's a matter of symantics, really. Your experience shows that they are basically the same thing.
By
Jeff Girard, at 6:07 PM
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