The basic mix ratio for concrete is one part water, two parts cement and three parts sand. An alternative ratio is one part cement, two parts sand and three parts gravel with enough water added until the mixtures reaches the consistency of thick mud. Lime is also a common additive to the mix.Know More
Concrete and mortar can be made from a mixture of masonry sand and either Portland cement or masonry cement. The addition of hydrated lime makes the concrete more plastic-like when it's wet and stronger and more durable after the concrete hardens. Masonry cement comes with lime already included.
For custom cement and mortar recipes, which result in concrete and mortar of varying strengths, Portland
and masonry cement are measured by the bag. A 94-pound bag is standard. Lime comes in 50-pound bags. Masonry sand is usually sold loose and delivered by a truck, and it's measured by the mounded shovelful.
The cement or mortar is mixed by first adding a portion of the water. The sand and cement are then poured into the water, and the mixture is stirred for several minutes. More water, cement or sand can be added if the mixture is too wet or dry.Learn more about Building Materials
Modern cement is made by combining certain chemicals that include aluminum, calcium, silicon, iron and other ingredients in a controlled process. These chemicals are derived from limestone, clay, slate, iron ore, chalk with shale, slate and blast furnace slag. When exposed to high temperatures, these materials form a rock-like substance, which when grounded into powder form and becomes what is commonly referred to as cement.Full Answer >
Cement is made from a controlled mixture of calcium, silicon, aluminum, iron and other ingredients, which are most commonly found in limestone, shells and chalk or marl, and are combined with shale, clay, slate, blast furnace slag, silica sand and iron ore. To create cement, these material are heated at a high temperature and form a rock-like substance that is then ground into a fine powder.Full Answer >
The density of cement can be anywhere from 62 to 81 pounds per cubic foot, depending on the type of cement. General purpose cement, for example, can have a density up to 81 pounds per cubic foot.Full Answer >
Cement is a fine, gray powder that is used as a construction binding material. When mixed with water, cement reacts chemically and becomes hard and strong. Cement is categorized as either hydraulic or nonhydraulic, depending on how it mixes with water.Full Answer >