Glue-fastening of insulating blocks for a liquefied-gas storage tank using undulating beads

Abstract

Sealed, thermally insulated terrestrial tank built into a bearing structure ( 1 ), comprising a thermally insulating barrier comprising a plurality of insulating blocks ( 14 ), each insulating block comprising a plywood panel and containing or carrying thermally insulating material, the said insulating blocks ( 14 ) being fastened directly against the bearing structure ( 1 ) by means of beads ( 3 ) of mastic positioned on the panels of the said insulating blocks along mutually parallel lines, characterized in that at least two of the said beads ( 3 ) on the panel of at least one of the said insulating blocks ( 14 ) are arranged along wavy parallel lines.

1 . Method of adhesively bonding insulating blocks to a bearing structure of a terrestrial tank, with the aid of beads of mastic, for the production of a sealed, thermally insulated terrestrial tank for the storage of liquefied gases on land, the tank comprising a thermally insulating barrier comprising a plurality of insulating blocks, each insulating block comprising a panel and containing or carrying thermally insulating material, the method comprising:
 a) applying the beads of mastic to the panel of the insulating blocks or to the bearing structure along mutually parallel line;   b) positioning the insulating blocks against the bearing structure of the tank; and   c) pressing the insulating blocks against the bearing structure until polymerization of the mastic,   
       wherein at least two of the beads are arranged in wavy parallel lines between the panel of at least one of the said insulating blocks and the bearing structure. 
     
     
         2 . Adhesive bonding method according to  claim 1 , wherein a distance between two consecutive wavy parallel lines is greater than or equal to 100 mm. 
     
     
         3 . Adhesive bonding method according to  claim 1 , wherein the wavy parallel lines are sinusoids. 
     
     
         4 . Adhesive bonding method according to  claim 3 , wherein the sinusoid has a ratio substantially equal to 8 between a period and an amplitude. 
     
     
         5 . Sealed, thermally insulated terrestrial tank built into a bearing structure, comprising:
 a thermally insulating barrier comprising a plurality of insulating blocks, each insulating block comprising a panel and containing or carrying thermally insulating material, the insulating blocks being fastened directly against the bearing structure by means of beads of mastic positioned on the panels of the insulating blocks along mutually parallel lines, wherein   at least two of the beads on the panel of at least one of the insulating blocks are arranged along wavy parallel lines.   
     
     
         6 . Sealed, thermally insulating tank according to  claim 5 , wherein a distance between two consecutive wavy parallel lines is greater than or equal to 100 mm. 
     
     
         7 . Sealed, thermally insulating tank according to  claim 5 , wherein the wavy lines are sinusoids. 
     
     
         8 . Sealed, thermally insulating tank according to  claim 7 , wherein the sinusoid has a ratio substantially equal to 8 between a period and an amplitude.