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  1. Concrete Mix Ratios – Cement, Sand, Aggregate and Water

    Cement – 611 pounds; Sand – 1450 pounds; Stone – 1600 pounds; Water – 33 to 35 gallons; So, you can see more cement and less sand is needed to get stronger concrete mix, which is ideal for driveways, pool decks, exterior patios, sidewalks and commercial garages. Irrespective of the batch size, it is imperative to keep the ingredients in ...

  2. How To Mix Concrete Manually By Hand - Civil Engineers Forum

    Having gathered all the materials it is time to mix them all together. First, you thoroughly mix all the dry items together: 1 part cement, 2 parts sand and 3 parts gravel. Mix these together using a sturdy hoe. Mixing may be done in a wheelbarrow or tub. Of course, it is a lot more convenient to use wheelbarrow.

  3. Fiberglass Reinforced Concrete - Uses, Advantages and …

    GFRC is difficult to self-mix. Generally, a contractor will mix and pour or spray this type of concrete. While the mix can be pretty versatile it can fall apart if not properly applied or poured. The use of materials such as wire along the foundations, walls and ceilings will help the concrete adhere and have a stronger finish.

  4. How to Color Concrete: 5 Methods - Civil Engineers Forum

    With this method, the color and hardening agents are applied by hand just before the concrete hardens when it has been placed. The finely-ground pigments and dry cement that make up the shake-on colors are broadcast onto the freshly placed concrete. It will then bond into place thanks to the bleed water present on the recently placed color ...

  5. Advantages and Disadvantages of Using Fly Ash In Concrete

    Fly ash in the concrete mix efficiently replaces Portland cement that in turn can aid in making big savings in concrete material prices. It is also an environmentally-friendly solution, which meets the performance specifications. It can also contribute to LEED points.

  6. Concrete Bleeding | Causes, Problems and Remedies - Civil …

    Bleeding of concrete can cause high water-cement ratio at the top. It will result in poor bond between two layers. It can result in poor pump ability. Concrete Bleeding Causes. Bleeding of concrete occurs due to the causes stated below.

  7. How To Build a Garage Foundation - Civil Engineers Forum

    Pour dry cement mix into the wheelbarrow. Add water to the dry mix, stirring constantly. Mix thoroughly and make sure the consistency is chunky. Mixture that is too soupy will not set up properly. garage foundation Step 6: Pour the Foundation. Pour the mixed concrete into the forms; try to make it as consistent of a pour as possible.

  8. Difference Between Cement and Concrete – Cement vs Concrete

    2015年6月2日 · Cement is also used when making mortar. Concrete. Concrete is a heterogeneous mixture of cement, sand, crushed stone (or brick chips) and water. Aggregates like sand and stone are inert while cement and water undergo chemical changes and the mass hardens like artificial stone. Approximately, 7.5 gallons of water is needed per bag of cement.

  9. Ferrocement – Advantages and Disadvantages of Ferrocement

    Cement; Fine aggregate; Water; Admixture; Mortar mix; Reinforcing mesh; Advantages of Ferrocement. There are many advantages of ferrocement. Some of the common and major advantages are listed below. Raw materials are available in most of the countries. It can be constructed in any shape. Labor is not required to be very experienced.

  10. Setting and Hardening of Cement - Civil Engineers Forum

    2015年4月27日 · Setting types are affected by minor constituents in the cement such as alkalis and Sulfates, by fineness, water-cement ratio, ambient temperature and inclusion of mineral and chemical admixtures. Concrete generally sets more slowly than cement paste because of the higher water-cement ratios.