1. What is concrete?
Concrete is a mixture of stone, sand, cement & water.
2. What is the difference between cement and concrete?
Cement is an ingredient in concrete. It is the ingredient that forms a paste with the water, sand, and admixtures and fills the space between the coarse aggregates (rock) and binds the rocks together. The term “cement” is commonly misused to refer to concrete.
3. Does my concrete driveway need to be sealed?
4. What are concrete joints?
Concrete joints are straight horizontal cuts in the slab. They are used to control cracking in the slab.
5. What is ready mix?
Ready mix, also known as ready mixed concrete, is a type of concrete that is delivered in trucks that agitate and/or mix the concrete on the way to the job or at the job site. The concrete is delivered in a plastic, unhardened state. The truck-mounted, revolving drum mixer was invented by Stephen Stepanian. Stepanian filed the first truck mixer patent application in 1916.
6. When is it too hot to pour concrete?
It depends. First of all, there is no getting around the fact that the ideal temperature range for pouring concrete is 40° to 80° F. However, high-quality concrete work can be done at temperatures above that range. High temperatures cause concrete to set faster. Strong winds and low humidity can also cause problems with plastic shrinkage and drying shrinkage cracks, even at moderate temperatures. To avoid these problems, planning, timing of the finishing operations, proper use of retarding admixtures, and proper curing are necessary.
7. When can I drive on my new driveway?
It depends on many variables, two of which are mix design and temperature. Normal concrete will reach 1/3 of its ultimate strength in 4 days, 2/3 in 7 days. Ideally, you should wait 7 days, however, that is not always possible.
8. Does concrete harm the environment?
Actually, concrete construction is environmentally friendly. Concrete is energy efficient. Concrete contains recycled materials. Concrete reduces urban heat islands. Concrete is manufactured locally. Concrete structures are durable. Concrete pavements can be recycled. The raw materials used in concrete come from the most abundant minerals on earth.
9. What are those orange spots on my sidewalk?
It may be fertilizer. Some fertilizer includes iron, and when the granules get wet on the concrete they leave rust spots. Fortunately, the effect is temporary.
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