cement concrete gravel

  • Adding Cement Mix to Gravel Driveway | Hunker

    Laying a concrete driveway over an existing gravel one is possible, but it is not generally recommended. The kind of gravel that is intended to go under cement is typically a smaller grade than what is used for gravel driveways.

  • Concrete Mix Ratios - Cement, Sand, Aggregate and Water

    Concrete mix ratio is a vital topic in concrete mix design. The four basic ingredients for making concrete are: Portland cement, sand, aggregate (stone) and water. The strength of concrete mixture depends on the ratio in which these four ingredients are mixed.

  • Mixing concrete powder into the gravel - driveway

    Apr 15, 2005 · I assume that you mean "Portland Cement" which is made of limestone, clay, and sand cooked together then gypsum is added. This is the "binder" in the concrete and composes 7-15% of the total concrete weight. The rest is aggregate: sand, gravel, etc. When you order concrete delivered by truck, they ask "How many sacks?"

  • Concrete Mix Ratios (Cement, Sand, Gravel)

    Water/cement ratio theory states that for a given combination of materials and as long as workable consistency is obtained, the strength of concrete at a given age depends on the w/c ratio. The lower the w/c ratio, the higher the concrete strength. All materials used for a design including the water quality should be to a high standard.

  • Estimation of Cement, Sand, and Gravel in Construction

    In the estimation of cement, sand, and gravel volumes for concrete proportioning, we use the Fuller's Formula. This is an easy way to get a rough estimate in case you are in the field.

  • Importance of Gravel and Sand for Concrete | Hunker

    Apr 12, 2018 · Concrete is made up of cement and water plus an aggregate composed of sand and gravel. The sand and gravel do more than act as filler, though. The size and amount of gravel added to a bag of concrete also determines the product's volume, strength, and durability.