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Which type of portland cement develops high early strength?
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Cement
The cement-making process, from crushing and grinding of raw materials, through roasting of the ground and mixed ingredients, to final cooling and storing of the finished product.
The type of portland cement that develops high early strength is designated as Type III in the United States. In many other countries, this variety is referred to as rapid-hardening cement.1
It is important to distinguish this from high-alumina cement, which is a different class of building material that also gains a high proportion of its ultimate strength within 24 hours but is not classified as a type of portland cement.12