Concrete is a very unyielding substance. It can take a lot of wear and tear. Hence, it is ideal for places that are high traffic areas like the car park. Concrete if treated right will last you a long time. If there are any cracks in the concrete make sure you make the correct repairs. Concrete repairs can be a little complicated so make sure you know what you are doing. If you see any small cracks in your concrete see if needs to be fixed. Polyurethane can be used for most repairs.Though it is a relatively new concept, the usual methods are quite time consuming. In some cases the whole piece will have to be taken out and replaced. Concrete repairs need some time to set properly so ensure that you are able to close off the area if you are planning any repairs. There are also a lot of steps that have to be followed to get it right. These will be a little tough so try and get someone who has done it a couple of times to help you out. However if you feel confident enough to do it yourself, make sure you follow the steps properly. Short term concrete repair products are epoxies, chalking and resins. Though if you are looking for something more long term, then ready to set concretes would be the right choice.Have a look at PURlevel for more info on this.
These differ for different cracks. Some come ready in a tube that just has to be filled into the crack, while others require some mixing before being used. Before you fill in any crack make sure it is clean of debris and water. Though these do not require a drill or removal of the slab make sure that you so not use these products in places that require more extensive concrete repairs. These are relatively easy to do and do not need too much time to dry. Also remember that during a humid or cold weather you will require catalysts to ensure that the concrete sets.If the concrete is turning flakey this could be because of high traffic in the area. Products are available which will repair the concrete without removing the whole slab. But the whole area will have to be closed till it sets completely to get the best result. Research the best products available before you decide what suits you best and which will be the easiest for you to do yourself.