Fabrication of Unfired Porous Quartz Brick Used the River Sands from the Yangtze River in China

Jie Guang Song; Fang Wang; Da Ming Du; Yang Liang Li; Gang Chang Ji

doi:10.4028/www.scientific.net/AMR.418-420.465

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 418-420Fabrication of Unfired Porous Quartz Brick Used...

Fabrication of Unfired Porous Quartz Brick Used the River Sands from the Yangtze River in China

Abstract:

The insulating brick is prepared used low grade quartz sand along the Yangtze River, and the mechanism of porous structure contolment is researched, which lay technological foundation for increasing the performance of insulating brick. The results show the porosity of unfired porous quartz bricks is decreased with increasing the content of quartz sands. When the content of foaming agent is beyond 0.5%, the porosity of unfired porous bricks is increased with increasing the content of foaming agent. When the ratio of materials and water is above 1:1.1, the porosity of unfired porous bricks is decreased with increasing the content of adding water. Through optimizing the technology that using 60% quartz sands, 39% cement, 1% foaming agent and the ratio of materials and water for 1:1.1 are mixed, the unfired porous quartz bricks is produced, the density is 0.628 g/cm3, the porosity is 74.586% and the compression strength is 1.9 MPa, the porous structure of brick is homogeneous distribution, the pore is closed pore.