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Concrete creep is essentially the sagging of concrete over time. Creep and shrinkage of concrete are two physical properties of concrete.The creep of concrete, which originates from the calcium silicate hydrates (C-S-H) in the hardened Portland cement paste (which is the binder of mineral aggregates), is fundamentally different from the creep of metals and polymers.
ASA is mildly hygroscopic; drying may be necessary before processing. [4] ASA exhibits low moulding shrinkage. [5] ASA can be used as an additive to other polymers, when their heat distortion (resulting in deformed parts made of the material) has to be lowered. [6]
Most metals and alloys shrink as the material changes from a liquid state to a solid state. Therefore, if liquid material is not available to compensate for this shrinkage a shrinkage defect forms. [3] When progressive solidification dominates over directional solidification a shrinkage defect will form. [2]
Shrinkage has great significance because any expansion or shrinkage can cause deformation of the product, which could be a severe concern for the end-user, and the brand can lose its reputation. [7] Secondly, in the garment-making industry, consumption of the fabric is calculated in yards, so any variance than permissible limits is unacceptable ...
Drying time is inversely related to thickness and, to some extent, the width of the lumber. Whether the lumber boards are quarter-sawn, flat-sawn, or bastard-sawn (mixed-sawn) Sawing pattern influences the distortion due to shrinkage anisotropy. Permissible drying degrade Aggressive drying schedules can cause timber to crack and distort.
Laundry hung on a clothes line in a drying room (dehumidifier in the background and duct for ventilation in the ceiling) Drying is a mass transfer process consisting of the removal of water or another solvent [1] by evaporation from a solid, semi-solid or liquid. This process is often used as a final production step before selling or packaging ...
The cast tape only dries from one side, the exposed surface, as the casting surface is impermeable. Drying is dependent on two processes, namely the evaporation of the solvent from the surface, and the diffusion of the solvent through the tape towards the single exposed surface. The evaporation may be sped up by applying air drying.
Yet another solution is a process called soil stabilization, in which additional materials are added to the soil to limit its ability to shrink and swell. [7] Materials for stabilization include cement , resins , fly ash , lime , pozzolana , or lime-pozzolana mixture, [ 7 ] depending on the site conditions and the project goals.