C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
25/125, 25/136
C04B 33/32 (2006.01) C04B 38/06 (2006.01)
Patent
CA 1100739
ABSTRACT OF THE DISCLOSURE The present invention relates to a method of manufac- turing terra cotta pavings which may be used for ground surfa- cing, said pavings not being frost-susceptible, being porous and water-permeable, comprising the steps of : intimately mixing 100 parts by volume of clay with 80 to 160 parts by volume of dry, non-compressed sawdust, essentially formed of particles whose average diameter is included between 0.5 mm and 4 mm ; adding water such that the total water content is between 8 and 30 % by weight with respect to the weight of the mixture ; shaping the pavings under pressure ; drying the pavings ; baking the pavings at a temperature between the temperature, above which the terra cotta is not frost-susceptible, and the melting temperature of this clay, and subjecting the faces of the pavings to pumicing,
292437
Fors Arne I.
Socri International S.a.
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