-ability
bisley57 11-08-2008
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    Is the pumpability of lightweight concrete better when using an ash mix or straight cement?I am going with ash,just looking for opinions.
baddassduramax 11-08-2008
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i am also curious on this. i pumped crete the other day with no additives except rock, sand and cement and OMG, it pumped HARD.....but why? it was supposedly a 4000psi mix
kneerick 11-08-2008
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the best lightweight is when the rock is wet wich we know never happens,but it does pump better with super p in it
crazypumper 11-08-2008
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Baddassduramax, welcome to the club. here in Puerto Rico thats all we pump. just sand, rock and cement. like once in 100 jobs i do they use super p. and like every 1000 jobs i do one with flyash.
pudg 11-10-2008
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a little fyash helps
pudg2 11-12-2008
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i have always found high cement mixes at lower slump with super p was always tougher on the pressure gauge,