A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a bending-resistant basic magnesium sulfate cement. The cement is composed of the components of, by mass, 40-55% of magnesium oxide, 20-25% of magnesium sulphate heptahydrate, 10-20% of industrial waste powder, 5-9% of white slag, 3-8% of a mineral admixture, 2-5% of desulfurization gypsum, 2-4% of straw, and 1-3% of a coagulation adjustment agent. According to the invention, appropriate additives are added into magnesium oxysulfate cement, such that a novel basic magnesium sulfate phase is formed, and the bending-resistant basic magnesium sulfate cement with performances and characteristics completely different than those of the traditional magnesium oxysulfate cement is produced. A main hydration product of the basic magnesium sulfate cement is high-strength 517 whiskers. The cement is a novel special cement with the advantages of whisker self-formation, high toughness, high compressive-bending strength ratio, carbonization resistance, bittern resistance, hydrothermal resistance, seawater resistance, impact resistance, fatigue resistance, carbonization resistance, steel bar corrosionresistance, high durability, and long service life.
The invention discloses a bending-resistant basic magnesium sulfate cement. The cement is composed of the components of, by mass, 40-55% of magnesium oxide, 20-25% of magnesium sulphate heptahydrate, 10-20% of industrial waste powder, 5-9% of white slag, 3-8% of a mineral admixture, 2-5% of desulfurization gypsum, 2-4% of straw, and 1-3% of a coagulation adjustment agent. According to the invention, appropriate additives are added into magnesium oxysulfate cement, such that a novel basic magnesium sulfate phase is formed, and the bending-resistant basic magnesium sulfate cement with performances and characteristics completely different than those of the traditional magnesium oxysulfate cement is produced. A main hydration product of the basic magnesium sulfate cement is high-strength 517 whiskers. The cement is a novel special cement with the advantages of whisker self-formation, high toughness, high compressive-bending strength ratio, carbonization resistance, bittern resistance, hydrothermal resistance, seawater resistance, impact resistance, fatigue resistance, carbonization resistance, steel bar corrosionresistance, high durability, and long service life.
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