Engineering is a branch of science and technology. It deals with designing and building. They also can study machines and structures. So Civil Engineering is just a wide range of fields in design and construction of physical and natural structures. They build lay out parking lots, bridges, skyscrapers, even some monuments.
Construction Engineering
Construction engineering is the planning and maintenance of the structures. These engineers are in the field of the project all the way until the end.
Structural Engineering
Structural Engineers are the ones responsible for, well the structures. They make sure a building is going to stay up for a long time safely. They put into account everything from climate, to weight that will be put on it in everyday use.
Material Engineering
Ever heard of the 3 little piggies and the big bad wolf? When you read it, you found that only one house didn't fall down when the big bad wolf huffed and puffed. The house that stayed up was made of brick. When it comes to building, and in this case, civil engineering, materials really do matter. This job is saved for the material Engineers. They make sure the material used to build something is OK to use with the climate or weathering, or any other problem the structure it might go through.
In a normal day, civil engineers may spend their time in meetings, discussing structures, designs, and plans. They devise a plan and then usually there are more than one going around, so it takes a while to come to agreement.
If that step is already finished, they might have to go talk to the contractor about the plans in building the project. If the contractor agrees, they continue to building. If not, it's back to the office to come up with a new plan. That is usually not the case though, and they usually are ready to move on.
