The full name of PCC is plain cement concrete. It is an unreinforced combination of cement, sand, aggregate, and water. To minimize direct contact of the concrete reinforcement with soil and water, PCC concrete is put on the soil surface prior to the concrete construction. This method of placement is called "Soil-Trenched" or "Rough-Graded." The term "soil-trenching" refers to the fact that all internal reinforcing bars are placed within the trenches excavated in the soil before the concrete is poured into those trenches.
Plain cement concrete is used primarily for footers, basement walls, and other low-profile applications where its durability and cost efficiency are important factors. Cementitious soils should not be used as subgrade materials for PCC because they will dissolve over time.
PCC is a type of non-structural concrete. Non-structural concrete is concrete that does not contain any steel reinforcement. Structural and non-structural concrete can be used interchangeably when referring to concrete used in foundations. PCC is used instead of structural concrete because it is less expensive than steel-reinforced concrete and provides similar performance for low-rise residential buildings.
Non-structural concrete is used in basements, patio floors, walkways, and other low-profile applications where its durability and cost efficiency are important factors.
Polymer cement concrete is a cement-based composite material in which a polymer replaces part of the cement and serves as a binding agent. Polymer Cement Concrete (188.8.131.52)
|Polymer (dry basis—total solid)||14–19|
Both OPC and PPC cement can be utilized in the manufacture of concrete slabs. OPC is the most basic type of cement, consisting of 95% cement clinkers and 5% gypsum, and is widely used in industrial and large-scale building. Early on and after 28 days, OPC cement has a high compressive strength. But at 56 days this strength decreases rapidly, and by 140 days only half its original strength remains.
OPC is generally inexpensive and easy to use, but it can't be dyed or painted, so it's useful only for non-esthetic applications like foundations and footings. It also has a low heat capacity which means that if you pour hot liquids into cold containers, they will cause the OPC to crack and fail prematurely.
PPC (portland cement) is a more expensive version of OPC that is used when greater durability or aesthetic appeal is required. It is composed of 90% portland cement and 10% limestone. The higher percentage of portland cement makes the resulting concrete stronger and more resistant to temperature changes.
It is important to note that both cements will absorb water initially, which means that before pouring your slab you'll need to allow time for it to dry out. This will help prevent mold from growing in the wet cement.
When selecting a cement for your concrete flooring project, consider how much wear and tear it will receive and whether or not you want it to look good over time.
Concrete is a combination of paste and aggregates, or rocks, in its most basic form. The paste, which is made up of portland cement and water, covers the surface of the fine (small) and coarse (big) aggregates. As the concrete cures it becomes hardening.
The paste and the aggregate are mixed together in proportions that will yield the desired properties for the finished product. For example, more paste means a stronger concrete, while less aggregate means a finer powder with no big chunks of rock.
Cement is the key ingredient in concrete, because it gives it its strength. Cements come in two main types: ordinary portland cement and fly ash cements. Ordinary portland cement is the most used type and it can be divided into four categories based on maturity: Class A, B, C, or G. These different categories affect the performance of the cement during setting and after it has cured. For example, class A cements start to set immediately while class G cements don't set until it reaches 90 degrees Fahrenheit outside.
Fly ash cements are becoming more popular because they reduce the amount of steel needed in construction projects.
Cement is primarily used as a binder in concrete, which is a fundamental material for all types of construction, including housing, roads, schools, hospitals, dams, and ports, as well as decorative applications (for patios, floors, staircases, driveways, pool decks) and items such as tables, sculptures, or bookcases. Cement is also used in bricks, tiles, countertops, flooring, wall plaster, and paint.
Other applications include fillers in asphalt pavement and soil conditioners. Cement production is a large industry that uses much of the product itself. The remaining amount goes into other products as a result of pollution controls needed to meet emissions standards.
Concrete consists of water and cement, with additional ingredients that affect the properties of the finished product. Cement is a common ingredient in many concrete mixes; it binds the aggregate (sand, gravel, crushed stone, glass, etc.) together and provides reinforcement when required. As an alternative to cement, synthetic fibers can be used as reinforcing agents in place of steel rebar. These fibers are usually polyester or nylon and can be natural or synthetic. Concrete with high levels of cement has very good resistance to heat and acid, but not to oil or chemicals. Concrete with low cement content is more flexible and can be molded more easily, but lacks some strength properties of the high-cement variety.