The superior performance of Self-Consolidating Concrete (SCC) and Self-Consolidating Mortars (SCMOs)
over conventional concrete is generally related to their ingredients. Compared with normal mortar mixtures,
the segregation resistance of self-consolidating mortar are more sensitive to small variations of
properties such as gradation and moisture content of aggregates, type and dosage of superplasticizer.
To study flowability and segregation of SCMOs, it is critical to be able to quickly quantify rheological
properties of SCMOs. In this study, to evaluate the fresh properties of self-consolidating mortars, three
apparatus (mini column segregation, mini J-ring and mini Orimet tests) have been developed as a simple
and fast methods for testing rheological properties of SCMOs. In addition, the limitations of mentioned
methods are proposed. The test results were in agreement with the Column Segregation test (ASTM
C1610-10), the J-ring test (ASTM C 1621-09), and Orimet test (EFNARC SCC-02). Furthermore, thirty
mortar mixtures containing zero to 6 percent nano silica and silica fume are prepared to verify the test
methods. The results show that the mixtures containing nano silica and silica fume have higher viscosity
than the control mixture.
The superior performance of Self-Consolidating Concrete (SCC) and Self-Consolidating Mortars (SCMOs)over conventional concrete is generally related to their ingredients. Compared with normal mortar mixtures,the segregation resistance of self-consolidating mortar are more sensitive to small variations ofproperties such as gradation and moisture content of aggregates, type and dosage of superplasticizer.To study flowability and segregation of SCMOs, it is critical to be able to quickly quantify rheologicalproperties of SCMOs. In this study, to evaluate the fresh properties of self-consolidating mortars, threeapparatus (mini column segregation, mini J-ring and mini Orimet tests) have been developed as a simpleand fast methods for testing rheological properties of SCMOs. In addition, the limitations of mentionedmethods are proposed. The test results were in agreement with the Column Segregation test (ASTMC1610-10), the J-ring test (ASTM C 1621-09), and Orimet test (EFNARC SCC-02). Furthermore, thirtymortar mixtures containing zero to 6 percent nano silica and silica fume are prepared to verify the testmethods. The results show that the mixtures containing nano silica and silica fume have higher viscositythan the control mixture.
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