Topic Category: Book 2

Curing and Protection

Concrete is cured by ensuring that proper moisture and temperature conditions are maintained while the concrete gains strength, usually for around seven days. Improperly cured concrete will never gain its entire strength and improper curing can affect durability and resistance to wear. Weather extremes are one of the main hazards to making sure concrete cures …

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Pavements

Concrete paving is sometimes considered a specialty among the many other concrete occupations. However, it is important to remember that all of the skills you’ve learned so far will be used.  Floating, edging, and surface preparation are all parts of paving roads, highways, and interstates. Read Book 2 / Unit 9  Review “Words You Should …

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Joint in Concrete

A number of factors must be considered when planning where to place joints in a slab, such as the size of the slab, the location of rigid objects, and the slab thickness. You must also decide if the joints will be made as the concrete is placed or cut after the concrete has cured. In …

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Steps

Concrete steps are preferred by many builders because of their strength and versatility. There are two basic forms of steps: solid fill base, in which the steps are earth supported, and open, in which the steps are suspended with support at the top and bottom. A third type is precast which is poured and cured …

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Sidewalks and Patios

For the cement mason, sidewalks and patios can be one of the most gratifying areas of the trade. Usually the cement mason is responsible for the entire product, from the elevations, set up, subgrade, and ordering materials, as well as the placing and finishing of the concrete. At times the cement mason is also given …

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Finishing Floors

There is much more to finishing concrete floors than just leaving the finish as specified. How the concrete is poured, consolidated, and allowed to begin hardening before troweling has a direct effect on strength and durability. In this unit you will learn the proper techniques for finishing large slabs with both floats, hand trowels, and …

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Site Layout

It is very important to know local regulations, covenants, restrictions, and zoning laws prior to laying out a project. Knowing these laws could save time, money and possible lawsuits.  Accuracy is also essential in site layouts. The cost of redoing or making architectural changes may be prohibitive or unacceptable.  Compare site layout to a journey. …

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Leveling and Transits

As you gain skills as a cement mason, you’ll move from finishing concrete to building formwork and eventually laying out building sites. As you have learned in other units, it is vitally important that building lines be laid out accurately, that screeds are set to the proper grade, and that driveways and slabs have the …

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Screeds and Bulkheads

Large concrete slabs often require multiple pours to complete. This requires the construction of bulkheads to contain the fresh concrete in each section and the construction of screeds to ensure the proper grade is maintained across the width of the pour. In addition to being strong enough to contain the fresh concrete, bulkheads must also be …

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