FAQs

Shellhamer Concrete Contractor

Have a concrete work-related question? Shellhamer Concrete Contractor has an answer. Call or text us today for more information.

  • Who will manage my project?

    The owner is on every job, making sure the client is satisfied with the project until its completion.

  • Are you licensed and insured?

    Yes, me and my team are licensed and insured.

  • Is there a difference between cement and concrete?

    Yes, there is a difference. Cement or Portland cement is a finely ground powder made from limestone and other raw materials. The materials are blended and fired in a kiln at extreme temperatures. The resulting stone-sized pieces are then ground into a fine powder that we call Portland cement. Portland cement is the active ingredient in concrete.


    Concrete is the product used in buildings, bridges, road paving, sidewalks, patios, etc. Concrete is a mixture of Portland cement, water, aggregate (sand and stone), and miscellaneous chemical admixtures. Concrete is mixed at a concrete plant facility and delivered to customers in revolving truck mixers, also referred to as concrete trucks or mixer trucks. Concrete is sometimes generically referred to as “ready mix” because it is ready to use or already mixed upon arrival at the project location.


  • Do I need a concrete contractor for my project?

    Concrete work requires knowledge and skill. There are fundamental skills that the average homeowner does not have. Some basic skills that are required are using a hammer, chalk lines, and saws; however, more specialized skills include the use of straightedge, a concrete edger, a hand float, and others.


    Besides the use of tools, other areas of expertise include site excavation, preparing the subgrade, and putting it in concrete form. These areas and the work of placing and finishing concrete is a very difficult work. Also, concrete is quite heavy and the timing of the finishing of the project is critical. For all of these reasons and more, most homeowners feel that it is necessary to hire a concrete contractor to do their concrete projects.

  • How is the strength of concrete measured?

    Scientists use compression and flexural mechanical strength tests to determine the strength of concrete. The strength of concrete depends to a large degree on the water-cement ratio, and the quality of the aggregates and paste in the cement.

  • Are there quality standards for concrete?

    Yes. Concrete must comply with local building codes, ACI, and ASTM.

  • Does concrete gain strength by drying out?

    No. Concrete is made by mixing cement, aggregates, and water together. When the water comes in contact with the cement a chemical reaction starts to take place. This chemical reaction is called hydration. Hydration is the reaction between the chemicals in water and the chemicals in cement. This reaction forms new compounds and crystals interlocking themselves and the aggregates together. A majority of this reaction takes place over the first month after placing the concrete. Small amounts of additional reaction and strength gains could take place for years as long as moisture is still present to cause more hydration. Actually, when the concrete does finally dry out, it stops gaining strength. 

  • When can I park on my newly installed driveway?

    Your driveway installer will be sure to communicate with you about what to expect as your driveway cures. While you should be able to walk on your new driveway once it is complete, it is important to store vehicles elsewhere for a full three days after installation.

  • What is concrete?

    Concrete consists of a mix of ingredients, including Portland cement, pozzolans, water, coarse aggregates, fine aggregates, and additives. Concrete may also contain mineral colors, granulated blast-furnace slag, and blended cement. When fresh, cement can be molded hours after it is produced. Once the initial set time is reached, the concrete continues to gain strength.

  • How long will the process take?

     Each project has a different set of variables that make its timeline unique, and a concrete contractor should be able to give you an estimate of how long yours will take to complete.


    They should also be able to provide an idea of when they will be able to get started on the project, which will depend on how far out their calendar is booked. 


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