Lightweight roof tiles and method of production
First Claim
1. A lightweight roof tile constructed of a composition comprising cement present in the amount of approximately 154-214 parts by weight, gypsum present in the amount of approximately 147-203 parts by weight, perlite aggregate present in the amount of approximately 35-50 parts by weight, lava stone present in the amount of approximately 59-82 parts by weight, water present in the amount of approximately 92-138 parts by weight, a catalyst comprising styrene acrylic present in the amount approximately 49-68 parts by weight, and a powder selected from the group consisting of perlite powder and volcanic ash present in the amount of approximately 10-14 parts by weight.
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Accused Products
Abstract
A roof tile which is lightweight and yet strong has a dry component that includes cement, gypsum, perlite aggregate, lava stone and a powder that may be perlite powder or volcanic ash. Water and a styrene acrylic catalyst are mixed with the dry constituents. The composition can be formed into the shape of roof tiles by conventional equipment.
57 Citations
12 Claims
- 1. A lightweight roof tile constructed of a composition comprising cement present in the amount of approximately 154-214 parts by weight, gypsum present in the amount of approximately 147-203 parts by weight, perlite aggregate present in the amount of approximately 35-50 parts by weight, lava stone present in the amount of approximately 59-82 parts by weight, water present in the amount of approximately 92-138 parts by weight, a catalyst comprising styrene acrylic present in the amount approximately 49-68 parts by weight, and a powder selected from the group consisting of perlite powder and volcanic ash present in the amount of approximately 10-14 parts by weight.
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4. A composition for constructing a lightweight roof tile exhibiting fire resistance, said composition comprising:
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(a) a dry portion which includes cement present in the composition in the amount of approximately 154-214 parts by weight, gypsum present in the composition in the amount of approximately 147-203 parts by weight, perlite aggregate present in the composition in the amount of approximately 35-50 parts by weight, lava stone present in the composition in the amount of approximately 59-82 parts by weight and a powder selected from the group consisting of perlite powder and volcanic ash present in the composition in the amount of approximately 10-14 parts by weight; and (b) a liquid portion for mixing with said dry portion to provide said composition, said liquid portion including water present in the composition in the amount of approximately 92-138 parts by weight and a catalyst comprising styrene acrylic present in the composition in the amount of approximately 49-68 parts by weight. - View Dependent Claims (5, 6)
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7. A method of constructing lightweight roof tiles exhibiting fire resistance, said method comprising the steps of:
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providing a dry mixture comprising cement present in the amount of approximately 154-214 parts by weight, gypsum present in the amount of approximately 14-203 parts by weight, perlite aggregate present in the amount of approximately 35-50 parts by weight, lava stone present in the amount of approximately 59-82 parts by weight and a powder selected from the group consisting of perlite powder and volcanic ash present in the amount of approximately 10-14 parts by weight; blending with said dry mixture water present in the amount of approximately 92-138 parts by weight and a catalyst comprising styrene acrylic present in the amount of approximately 49-68 parts by weight, thereby providing a tile composition; forming said composition into the shape of a roof tile; and allowing the tile shape to air dry at room temperature. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification