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The bulk density of expanded glass beads is much smaller than ceramsite and ceramsite

by:Spring Glass     2021-02-22
The bulk density of expanded glass beads is much smaller than that of ceramsite and ceramsite sand 2019-08-09 After expanded glass beads replace part of ceramsite and ceramsite sand, the dry density of all-light concrete is also significantly reduced by 13.7% and 31.5%, respectively. The compressive strength is reduced by 4.9% and 18.4%, respectively. The reduction in compressive strength is significantly smaller than the reduction in dry density, because the bulk density of expanded glass beads is much smaller than that of ceramsite and ceramsite. Expanded glass beads replace ceramsite and ceramsite. The dry density decreases. The hardness of the expanded glass beads with a higher degree of vitrification is greater than that of the ceramsite, so the strength of the expanded glass beads is smaller after replacing the ceramsite. (1) The density grade of all-light concrete prepared with high bulk density ceramsite and ceramsite sand is usually greater than 1100. It is difficult to reduce the density grade by adjusting the mixing ratio of cementitious materials and ceramsite. (2) The use of expanded glass beads to replace part of ceramsite and ceramic sand can effectively reduce the density grade of all-light concrete. When the replacement amount of expanded glass beads is 60% of the volume of the ceramic sand, the density grade is 1100 and the strength grade is LC15.
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