Final answer:
Type III Portland cement is produced from raw materials low in iron oxide and manganese oxide, ideal for precast concrete work due to fast strength development.
Step-by-step explanation:
The type of Portland cement produced from raw materials low in iron oxide and manganese oxide, which is used in precast concrete work, is Type III Portland cement. This type of cement is designed to develop high strength at an earlier stage compared to Types I and II. Type III Portland cement is often referred to as a high-early-strength cement and is ideal for use in precast concrete due to its ability to achieve the required strength more quickly, facilitating faster demolding and more rapid completion of construction projects.