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Rice husk ash (RHA) is very rich in the content of silica (SiO2) or known as silica dioxide. The content of silica (SiO2) in RHA reaches about 90%. This study was to investigate the characteristics of clay tile which was added RHA originating from burning brick. Addition of RHA on clay tile is 0%, 2
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Kukuh Sungkono (2018) studied this question.