Method for manufacturing articles in the form of a slab or block with a hardening binder, and articles thus obtained
OwnerLuca Toncelliinventor
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Abstract
In a method for manufacturing articles in the form of a slab or block, the articles are obtained from an initial mix comprising aggregates and a binder. Synthetic aggregates and fillers have a hardness greater than or equal to 5 Mohs, and contain silicon dioxide substantially only in amorphous form, the silicon dioxide in crystalline form being present in quantities of less than 1% by weight.
Claims14
A method for manufacturing articles in the form of a slab or block, said articles being obtained from an initial mix comprising aggregates and a binder, characterized in that the initial mix comprises stone-like synthetic aggregates and fillers with a hardness greater than or equal to 5 Mohs, which contain silicon dioxide substantially only in amorphous form while any case of silicon dioxide in crystalline form being present in quantities of less than 1% by weight;
- and
- wherein the synthetic aggregates and fillers have the following chemical composition:
- 43%<SiO2<80%,
- 5%<CaO<30%,
- 0%<MgO<12%,
- 0%<Al2O3<25%,
- 0%<ZrO2<20%,
- 0%<Na2O <12%, and
- 0%<K2O <10%;
- the SiO2 being present substantially only in amorphous form while any case of the SiO2 in crystalline form being present in quantities of less than 1% by weight;
- and
- wherein the initial mix undergoes vacuum vibro-compression followed by a binder hardening step.
An article in the form of a slab or block obtained from an initial mix comprising aggregates and a binder, characterized in that the initial mix comprises stone-like synthetic aggregates and fillers with a hardness greater than or equal to 5 Mohs, which contain silicon dioxide substantially only in amorphous form while any case of silicon dioxide in crystalline form being present in quantities of less than 1% by weight;
- and
- wherein the synthetic aggregates and fillers have the following chemical composition:
- 43%<SiO2<80%,
- 5%<CaO <30%,
- 0%<MgO <12%,
- 0%<Al2O3<25%,
- 0%<ZrO2<20%,
- 0%<Na2O <12%, and
- 0%<K2O <10%;
- the SiO2 being present substantially only in amorphous form while any case of the SiO2 in crystalline form being present in quantities of less than 1% by weight.
Dependencies are inferred from the claim text.