Liquidation violations in a cash account occur if you sell securities after the purchase date of a new trade in order to cover that new trade. The primary difference between a liquidation and a freeride, is that with the liquidation you are selling securities other than the one(s) purchased.
Admixtures can be used to increase slump without increasing the water in the concrete. The type of aggregate, the air content, the admixtures, temperature and the proportions of all the ingredients affect slump. The typical slump used for a driveway is five inches plus or minus one. A pound per square inch (psi) is the unit of measurement used to describe the compressive strength of concrete.
Where I live we use limestone stones to make asphalt paving. Left alone to weather, an asphalt driveway obtains a uniform color of gray. There are asphalt drives in my neighborhood that have not been sealed in 15 years. Had they been sealed three times in that time period I can't say that the driveway would be in any better condition. Absolutely do not seal a brand-new driveway.