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The average particle density of portland cement is usually taken as? The time that elapses from the moment water is added to cement until the paste ceases to be fluid and plastic is called? The ability of a hardened cement paste to retain its volume is known as? The overall particle size distribution of cement is called? For complete hydration of portland cement, about _ of water is needed Water that has not reacted with cement paste in a cementitious mixture is known as? One of the following is not a method of protecting steel from corrosion? The process by which carbon dioxide from the air penetrates concrete and reacts with hydroxides is called? Which of the following can be used to control cracking in concrete? Which of the following will not affect the amount of shrinkage in concrete? When permitted to dry completely, concrete will?
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Additional deformation in concrete due to sustained stress is called? The capability of concrete to hold back water without visible leakage is called? Compressive strength of concrete can be used as an index of the flexural strength, direct tensile strength, and spliting tensile strength Which of the following affects the compressive strength of concrete? 7 days compressive strength of concrete is often estimated to be _ of the 28 days strength If hardened concrete is saturated again after a drying period, strength will increase The chemical reaction between cement and water is called? Bleeding in concrete is not caused by one of the following? The ease of placing, consolidating, and finishing freshly mixed concrete is called? Which of the following is not an advantage of reducing water content in concrete?
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Which of the following is not a primary ingredient used in production of concrete?