they have admixtures and pumping agents to help with the flowability. Yes the more water you add to a mix other than it's designed amounts can reduce it's strenght thats why if a concrete contractor needs to wet it up a beyond it's designed slump they would talk to the supplier about using a placticizer or order a 4000# mix where a 3000# mix is needed knowing they are going to wet it up enough to reduce it's strenght but still be within the desired breaking strength to meet the jobs specs. I work for a Redi mix Companey batching trucks and delivering Crete and see it all the time
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Today's Featured Article - Fordson Model N: Field Service Operations and Lubrication - by Anthony West. The daily or weekly servicing of any vehicle is of the utmost importance, and in days gone by when our favorite tractors were doing an important and Commercially vital job on the farm, these service operations would make a major difference to the running costs and economy of the farm. This being so, it surprises me to see how many enthusiasts attending rallies, shows etc, seem to be unaware of the importance of this constant attention. Possibly the modern machine with its 6,000 mile or even once
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