About Concrete |
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Water-reducing |
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Water-reducing chemicals are used for two separate purposes: to lower the water content to increase the strength; or to increase the slump using the same water content for pumping concrete or to adjust the mix for hot weather. • Water reducers can reduce the required water content for a given slump by about 10%. • Water-reducers are described in ASTM C494. • Mid-range water reducers reduce water content by at least 8 percent and tend to be more stable over a wider range of temperatures. |
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