WHAT IS WHITE CEMENT? ITS APPLICATIONS, ATTRIBUTES AND ADVANTAGES

摘要

Most people, including architects and builders, use the terms concrete and cement interchangeably. Though the two materials are related, they are technically not the same. Portland cement starts as a dry powder mixture made from limestone, calcium, silicon, iron, and aluminum, plus lesser amounts of other ingredients. This mixture is heated in large kilns to about 2,700℉ (l,480℃) to form a product called clinker, which ranges in size from a fine powder to nodules that roughly resemble marbles. Clinker is ground with gypsum to a very fine powder creating the gray or white substance known as cement. When water is added to cement, a chemical process called hydration occurs, yielding a hardened stone-like material.