Slump refers to concrete's plasticizing and pumpable properties, which are used to measure the degree (plasticizing and pumpable properties) by a quantitative index to determine whether construction can be carried out normally. The influence of concrete slump mainly includes grading change, water content, weighing deviation of crossbar, dosage of admixture, temperature of cement, etc.
Slump refers to the workability of concrete, which is to ensure the normal construction, including water retention, fluidity and cohesion of concrete.
Workability means that the concrete mixture is easy to operate (mixing, transportation, pouring and compacting) and can obtain uniform and dense concrete performance. Workability is a comprehensive technical property, including the definition of water retention, fluidity and cohesion. The influence and easiness mainly include water consumption, water cement ratio, sand ratio, including cement variety, aggregate condition, time and temperature, admixture and so on.