The clay wall, unapproved as a fire-protective material in Building Standard Low, has a problem of the building confirmation. Therefore, clay wall is required to be analyzed on its fire-protective performance. Since clay contains a certain amount of organic substances, it has a probability of combustion and heat releasing. This paper reports the fireprotective ability of wall clay, examining through the cone calorimeter and the gas toxicity, utilized as a means of the approval tests for fireprotective material have been carried out. As a result, the wall clay, even enriched straw, proved that it has a performance of noncombustible matter.
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