Thank you very much for the responses. Since I posted, we have done 2 more pours. The first, we used a 3/8 shotcrete mix with 2" slump and added a gallon of Glenium per truck to bring the slump to 6-7" or so and we pumped it through a 2" hose. Pumped fine, but the 5 minute spin in the mixer...
We are pouring 8" thick, #5@15 EW, 14' tall walls with a 4000psi 3/4" mix. The pumper can't go below 4" hose for the 3/4" aggregate size and the design engineer wants to keep the 3/4" rock for strength and shrinkage. The 4.25" stinger the pumper has will not fit down inside the wall. A very...
