Watertight wall of any desired length without joints constructed by cutting trenches in the ground and method for its construction

Claim 2

A watertight wall formed by casting the wall in a trench in the ground, said wall comprising: 1. a hardened homogeneous slurry containing 16 to 30 kg of bentonite and 160 to 300 kg of cement per cubic meter, the hardening rate of the slurry being such that its viscosity does not exceed 20 centipoises and its tensile strength does not exceed 5 g/cm2 within 48 hours after casting, and 2. a plurality of solid panels immersed in the slurry at spaced intervals along the length of the trench so that the slurry forms a continuous body in contact with the exterior surfaces of said panels along the entire length of the trench.

Claim 3

pouring progressively into the trench during the cutting thereof a homogeneous slurry a. containing 16 to 30 kg of bentonite and 160 to 300 kg of cement per cubic meter, b. the hardening rate of which is such that its viscosity does not exceed 20 centipoises and its tensile strength does not exceed 5 g/cm2 within 48 hours after it is placed in the trench; and

Claim 4

pouring progressively into the trench during the cutting thereof a homogeneous slurry a. containing 16 to 30 kg of bentonite and 160 to 300 kg of cement per cubic meter, b. the hardening rate of which is such that its viscosity does not exceed 20 centipoises and its tensile strength does not exceed 5 g/cm2 within 48 hours after it is placed in the trench; and

Claim 5

then pouring into the trench a homogenous slurry a. containing 16 to 30 kg of bentonite and 160 to 300 kg of cement per cubic meter, b. the hardening rate of which is such that its viscosity does not exceed 20 centipoises and its tensile strength does not exceed 5 g/cm2 within 48 hours after it is placed in the trench; and

Claim 6

then pouring into the trench a homogenous slurry a. containing 16 to 30 kg of bentonite and 160 to 300 kg of cement per cubic meter, b. the hardening rate of which is such that its viscosity does not exceed 20 centipoises and its tensile strength does not exceed 5 g/cm2 within 48 hours after it is placed in the trench; and

Claim 7

A watertight wall as claimed in claim 1 wherein said solid panels have abutting and overlapping surfaces and the abutting and overlapping surfaces on adjacent panels are separated by gaps of at least 0.01 m.

Claim 8

a plurality of solid panels immersed in the slurry at spaced intervals along the length of the trench so that the slurry forms a continuous body in contact with the exterior surfaces of said panels along the entire length of the trench.

Claim 9

a plurality of solid panels immersed in the slurry at spaced intervals along the length of the trench so that the slurry forms a continuous body in contact with the exterior surfaces of said panels along the entire length of the trench.

Claim 10

A process for constructing a watertight wall in the ground comprising the steps of:

Claim 11

A process for constructing a watertight wall in the ground comprising the steps of:

Claim 12

then positioning a plurality of solid panels in the slurry filled trench at spaced intervals along the length of the trench so that the slurry forms a continuous body in contact with the exterior surfaces of said panels along the entire length of the trench.

Claim 13

then positioning a plurality of solid panels in the slurry filled trench at spaced intervals along the length of the trench so that the slurry forms a continuous body in contact with the exterior surfaces of said panels along the entire length of the trench.

Claim 14

then positioning a plurality of solid panels in the slurry filled trench at spaced intervals along the length of the trench so that the slurry forms a continuous body in contact with the exterior surfaces of said panels along the entire length of the trench.

Claim 15

then positioning a plurality of solid panels in the slurry filled trench at spaced intervals along the length of the trench so that the slurry forms a continuous body in contact with the exterior surfaces of said panels along the entire length of the trench.

Claim 16

cutting a second trench adjacent the first slurry filled trench when the slurry in the first trench has acquired a tensile strength greater than 150 g/cm2 and a viscosity sufficient to prevent the slurry from flowing into the second trench;

Claim 17

cutting a second trench adjacent the first slurry filled trench when the slurry in the first trench has acquired a tensile strength greater than 150 g/cm2 and a viscosity sufficient to prevent the slurry from flowing into the second trench;

Claim 18

A process as claimed in claim 3 wherein said solid panels have abutting and overlapping surfaces and said solid panels are positioned such that the abutting and overlapping surfaces on adjacent panels are separated by gaps of at least 0.01 m.

Claim 19

A process as claimed in claim 3 and further including the steps of: cutting a second trench adjacent the first slurry filed trench; joining the two trenches when the slurry in the first trench has acquired a tensile strength greater than 150 g/cm2 and a viscosity sufficient to prevent the slurry from flowing into the second trench; removing any slurry from the end of the solid panel in the first trench nearest the second trench; pouring fresh slurry of the type previously specified into the second trench; positioning a second plurality of solid panels at spaced intervals in the second trench in the same manner as before with at least one of said second plurality of solid panels located adjacent the prefabricated part exposed in the first trench; and drying the slurry to form the finished wall.

Claim 20

removing any slurry from the end of the solid panel in the first trench nearest the second trench;

Claim 21

removing any slurry from the end of the solid panel in the first trench nearest the second trench;

Claim 22

pouring progressively into the second trench during the cutting thereof fresh slurry of the type previously specified;

Claim 23

pouring progressively into the second trench during the cutting thereof fresh slurry of the type previously specified;

Claim 24

A process for constructing a water tight wall in the ground comprising the steps of:

Claim 25

A process for constructing a water tight wall in the ground comprising the steps of:

Claim 26

positioning a second plurality of solid panels at spaced intervals in the second trench in the same manner as before with at least one of said second plurality of solid panels located adjacent the prefabricated part exposed in the first trench; and

Claim 27

positioning a second plurality of solid panels at spaced intervals in the second trench in the same manner as before with at least one of said second plurality of solid panels located adjacent the prefabricated part exposed in the first trench; and

Claim 28

A pRocess as claimed in claim 6 wherein said solid panels have abutting and overlapping surfaces and said solid panels are positioned such that the abutting and overlapping surfaces on adjacent panels are separated by gaps of at least 0.01 m.

Claim 29

A process as claimed in claim 6 and further including the steps of:

Claim 30

drying the slurry to form the wall.

Claim 31

drying the slurry to form the wall.