The invention relates to
diatom sand beads and high-strength, environment-friendly and thermal-insulation
mortar containing the same. The
diatom sand beads are prepared from second-class and third-class diatomite used as a
raw material through four steps including
drying, purification,
granulation and
roasting. The
diatom sand beads are light in weight, environment-friendly and high in adsorbability and have the advantages of damp prevention,
fire prevention, purification,
thermal insulation and the like. The thermal-insulation
mortar is prepared from 50%-60% of the diatom sand beads, 10%-20% of diatom
powder, 5%-8% of environment-friendly latex
powder, 10%-20% of
cement, 1% of wood
fiber, 2% of
cellulose, 0-10% of glass beads and water. The thermal-insulation
mortar can replace
cement mortar to be directly applied to building wall
brick surfaces, when the thermal-insulation mortar is used for an exterior wall, other decoration processes can be performed directly on the thermal-insulation mortar, and when the thermal-insulation mortar is used for an interior wall, the thermal-insulation mortar can well adsorb indoor
formaldehyde produced during decoration, is environment-friendly and can purify
indoor air; the thermal-insulation mortar has the advantages of being light in weight, low in heat
conductivity coefficient, environment-friendly, thermal-insulation, high-temperature-resistant, fireproof, low-temperature-resistant,
noise-reducing, damp-proof,
mildew-proof, anti-condensation, free of radioactive substances, stable in physical and
chemical property and the like.