Thanks again to all who responded. Based on your information we have concluded the following:
Saw cuts were too late in the process and too shallow to induce the proper control;
Use of curing membrane was not sufficient for the evaporation rate considering the temperature and sun influence;
The...
We have some experience with this that may be helpful. In the last five years our power utility (Centerpoint energy) has begun to direct bury 79.5kva cable without using trenches and the usual red painted concrete conduit. They are careful about the location to avoid any area where digging might...
Thanks to all of you who replied. In somewhat of an order here is more:
1. The County establishes the standards for all street construction and they require expansion joints on a maximum of 40' spans. The engineers (not us) will routinely just copy the spec in their P&P drawings and let the...
Temperature was 80 deg with 2-4 knot wind, sunny day, humidity about 80%. Cracks are parallel to crack control joints and appear about mid way between expansion joints. Most run from side to side of each lane (lanes are poured in 14 day intervals so one lane is always accessible). In one pour of...
A project contractor has prepared subgrade with 6% lime stabilization, hydrated and mixed according to spec. Proctor tests surpass 98.5 at optimum moisture content. Pavement is 3000 psi plant tested mix with 7" depth using #4 bars on 18' x 30" spacing (local standards for streets). Concrete was...
