The NonShrinkage grout is often used for current injection mortar, joint bridge, machine foundation, etc. In general, grout proceeds plastic shrinkage by ingredient segregation and long-term drying shrinkage. As a result, durability declines due to the grout's desquamation and development of cracks....
The NonShrinkage grout is often used for current injection mortar, joint bridge, machine foundation, etc. In general, grout proceeds plastic shrinkage by ingredient segregation and long-term drying shrinkage. As a result, durability declines due to the grout's desquamation and development of cracks. To prevent these shrinkages, Expansive admixture is mixed. In general, metallic and non-metallic minerals are used. In metallic expansive additive which forms aerate in alkaline bath, differences in degree of expansion according to the construction conditions, long-term drying shrinkage, loss of strength due to aerate etc. are likely to occur. CSA which is the raw materials of non-metallic mineral expansive additive has a problem that the quality is not stable. because of such reason, in this study used an alumina cement which is stable in quality. And by using alumina cement, anhydrite, portland cement, a bonding agent which can derive Ettringite as non-shrinkage mechanism. this study tested a grout which shows non-shrinkage properties, rapid hardening properties, high strength properties. For the test, this study limited a bonding agent to 40% of total weight. Furthermore, the portland cement is fixed with 16% , the rest 24% of bonding agent is varies with the change of alumina cement, anhydrite‘s ratio. In this study test total 9 experiment with different variable. This study tested a compressive strength experiment, heating experiment and setting experiment, and performed the X-Ray Diffraction analysis to check the Ettringite formation. As a result of this study, As a result of this study, the 40%:60% (alumina cement : anhydrite)mixture ratio can see that non-shrinkage properties, rapid hardening properties and high strength properties occur. And as this study analyzed the Ettringite which acts as non-shrink mechanism in this study, all mixture could be checked of the Ettringite component. And as the ratio of anhydrite is higher , it has a tendency to form more Ettringite.
The NonShrinkage grout is often used for current injection mortar, joint bridge, machine foundation, etc. In general, grout proceeds plastic shrinkage by ingredient segregation and long-term drying shrinkage. As a result, durability declines due to the grout's desquamation and development of cracks. To prevent these shrinkages, Expansive admixture is mixed. In general, metallic and non-metallic minerals are used. In metallic expansive additive which forms aerate in alkaline bath, differences in degree of expansion according to the construction conditions, long-term drying shrinkage, loss of strength due to aerate etc. are likely to occur. CSA which is the raw materials of non-metallic mineral expansive additive has a problem that the quality is not stable. because of such reason, in this study used an alumina cement which is stable in quality. And by using alumina cement, anhydrite, portland cement, a bonding agent which can derive Ettringite as non-shrinkage mechanism. this study tested a grout which shows non-shrinkage properties, rapid hardening properties, high strength properties. For the test, this study limited a bonding agent to 40% of total weight. Furthermore, the portland cement is fixed with 16% , the rest 24% of bonding agent is varies with the change of alumina cement, anhydrite‘s ratio. In this study test total 9 experiment with different variable. This study tested a compressive strength experiment, heating experiment and setting experiment, and performed the X-Ray Diffraction analysis to check the Ettringite formation. As a result of this study, As a result of this study, the 40%:60% (alumina cement : anhydrite)mixture ratio can see that non-shrinkage properties, rapid hardening properties and high strength properties occur. And as this study analyzed the Ettringite which acts as non-shrink mechanism in this study, all mixture could be checked of the Ettringite component. And as the ratio of anhydrite is higher , it has a tendency to form more Ettringite.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.