Slump primarily refers to the plasticity and pumpability of concrete. It is a quantitative indicator used to measure the level of these properties, which helps determine whether construction can proceed normally. Factors affecting concrete slump include gradation changes, moisture content, weighing deviations of the cone, the amount of admixtures used, and aspects such as the temperature of the cement that are often overlooked.
Slump is a measure of the workability of concrete, specifically ensuring the normal progress of construction. It includes the water retention, fluidity, and cohesion of the concrete.
Workability refers to the ease with which concrete mixtures can be worked on during construction (mixing, transportation, pouring, and compaction), and the ability to achieve uniform and dense concrete properties. Workability is a comprehensive technical property that includes definitions in three aspects: water retention, fluidity, and cohesion. Factors affecting workability mainly include water usage, water-to-cement ratio, sand ratio, as well as cement type, aggregate conditions, time and temperature, and additives.
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