Method and system for calculating and reporting slump in delivery vehicles

A system for managing one or more conditions of concrete in a concrete delivery vehicle from immediately after concrete is loaded on said vehicle at the batch plant and the loaded ingredients are mixed until discharge from said vehicle, comprising:

• a mixing drum for containing concrete and mounted on said concrete delivery vehicle;
• a controller mounted on said concrete delivery vehicle;
• a chemical additive supply coupled to the controller and mounted on said concrete delivery vehicle, the chemical additive supply comprising two or more supply containers each containing a different chemical additive;
• and
• fluid connections between said supply containers and said mixing drum;
• a temperature sensor mounted to said mixing drum, and optionally one or more of a hydraulic pressure sensor mounted to said delivery vehicle to determine an amount of hydraulic pressure to rotate the said mixing drum, and a drum speed sensor mounted to the said deliver vehicle or the said mixing drum;
• said controller obtaining information on a condition of said concrete, and in response causing said chemical additive supply to selectively deliver chemical additive to said concrete,
• wherein the controller collects data on the condition of said concrete from two or more of:
• a temperature measurement of said concrete;
• rate or amount of measured temperature change of said concrete measured during a time period;
• and
• a measured amount of energy required in mixing said concrete;
• and
• measured completion of mixing of said concrete.