Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Foamed ceramic mainly prepared from silica sand tailing and fly ash and preparation method thereof
The invention relates to a high-porosity foamed ceramic mainly prepared from silica sand tailing and fly ash and a preparation method thereof. The foamed ceramic is prepared from the following components in percentage by mass: 25-45% of silica sand or quartz sand tailing, 40-60% of fly ash and 15-20% of additive; and the additive comprises 5-10% of sintering assistant, 5-10% of foaming agent and 2.5-5% of adhesive. The preparation method comprises the following steps: weighing the substances according to the designed formula, carrying out ball milling, screening, and adding the adhesive to prepare the admixture; and pressing the admixture into block billets, sintering, and cooling to obtain the high-porosity foamed ceramic. The density of the foamed ceramic is 0.59-0.73 g/cm<3>, the porosity is 65.7-69.8%, the bending strength is 4.0-4.7 MPa, the compression strength is 10.9-12.9 MPa, the acid resistance is 98.1-98.3%, and the alkali resistance is 99.1-99.4%. The foamed ceramic can be used as a building material with the functions of heat shielding, thermal insulation, sound insulation and fire resistance.
Foamed ceramic mainly prepared from silica sand tailing and fly ash and preparation method thereof
The invention relates to a high-porosity foamed ceramic mainly prepared from silica sand tailing and fly ash and a preparation method thereof. The foamed ceramic is prepared from the following components in percentage by mass: 25-45% of silica sand or quartz sand tailing, 40-60% of fly ash and 15-20% of additive; and the additive comprises 5-10% of sintering assistant, 5-10% of foaming agent and 2.5-5% of adhesive. The preparation method comprises the following steps: weighing the substances according to the designed formula, carrying out ball milling, screening, and adding the adhesive to prepare the admixture; and pressing the admixture into block billets, sintering, and cooling to obtain the high-porosity foamed ceramic. The density of the foamed ceramic is 0.59-0.73 g/cm<3>, the porosity is 65.7-69.8%, the bending strength is 4.0-4.7 MPa, the compression strength is 10.9-12.9 MPa, the acid resistance is 98.1-98.3%, and the alkali resistance is 99.1-99.4%. The foamed ceramic can be used as a building material with the functions of heat shielding, thermal insulation, sound insulation and fire resistance.
Foamed ceramic mainly prepared from silica sand tailing and fly ash and preparation method thereof
LU ANXIAN (Autor:in) / LI ZHUO (Autor:in) / LIU TAOYONG (Autor:in) / LI XIUYING (Autor:in) / LUO ZHIWEI (Autor:in) / HU XIAOLIN (Autor:in) / LIU PIAO (Autor:in) / ZHANG QIAN (Autor:in) / SONG JUN (Autor:in)
08.04.2015
Patent
Elektronische Ressource
Englisch
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