US4157998A — Method of producing a cement mortar with good sta…

Claim 1

Independent Claim 109 words

A method for producing a cement mortar containing cement, solid particles and water and having finely distributed gas in the mortar in an amount sufficient to provide said mortar with a density of 1200-2000 kg/m 3 which comprises introducing into the mortar prior to setting thereof 0.2-5.0 percent by weight based upon the quantity of cement of a particle-shaped hydrophilic-hydrophobic balanced product chemically inert in relation to the rest of the mortar and consisting of substantially spherical hydrophobic particles of 0.1-1.0 μm strongly adsorbed on the surface of which is a hydrophilic nonionic tenside in amount of 0.1-5.0 percent by weight based on the total weight of said product.

Claim 2

Independent Claim 109 words

A method for producing a cement mortar containing cement, solid particles and water and having finely distributed gas in the mortar in an amount sufficient to provide said mortar with a density of 1200-2000 kg/m 3 which comprises introducing into the mortar prior to setting thereof 0.2-5.0 percent by weight based upon the quantity of cement of a particle-shaped hydrophilic-hydrophobic balanced product chemically inert in relation to the rest of the mortar and consisting of substantially spherical hydrophobic particles of 0.1-1.0 μm strongly adsorbed on the surface of which is a hydrophilic nonionic tenside in amount of 0.1-5.0 percent by weight based on the total weight of said product.

Claim 3

Dependent Claim 82 words

The method of claim 1 which comprises introducing into said mortar a particle-shaped product of a homopolymer or copolymer of styrene, or at least one ester of acrylic or methacrylic acid, or copolymer of styrene and said ester wherein said ester has the formula: ##STR2## in which R 1 =H or CH 3 and R 2 =an alcohol radical with 1-8 carbon atoms with a particle size of 0.2-0.6 μm having adsorbed on its surface 0.1-3.0 percent by weight of nonionic tenside.

Claim 4

Dependent Claim 46 words

The method of claim 2 wherein said ester is methyl acrylate or ethyl acrylate or propyl acrylate or butyl acrylate or hexyl acrylate or 2-ethyl hexyl acrylate or methyl methacrylate or ethyl methacrylate or butyl methacrylate or hexyl methacrylate or 2-ethyl hexyl methacrylate or mixtures thereof.

Claim 5

Dependent Claim 43 words

The method of claim 1 which comprises introducing into said mortar a particle-shaped product of a copolymer of vinylidene chloride and acrylic acid ester or a homopolymer of vinylidene chloride having adsorbed on its surface of 0.1-3.0 percent by weight of nonionic tenside.

Claim 6

Dependent Claim 31 words

The method of claim 1 which comprises introducing into said mortar a particle-shaped product of a copolymer of styrene-butadiene having adsorbed on its surface 0.1-5.0 percent by weight of nonionic tenside.

Claim 7

Dependent Claim 23 words

The method of claim 1 which comprises introducing into said mortar a particle-shaped product of polyethylene with a particle size of 0.2-0.6 μm.

Claim 8

Dependent Claim 15 words

The method of claim 1 wherein said spherical hydrophobic particles are of a natural product.

Claim 9

Dependent Claim 18 words

The method of claim 7 wherein said natural product is asphalt having a particle size of 0.1-0.8 μm.

Claim 10

Dependent Claim 22 words

The method of claim 1 which comprises initiating drawing in of finely distributed air into said mortar by introducing said particle-shaped product.

Claim 11

Dependent Claim 11 words

The method of claim 1 wherein said solid particles are sand.

Claim 12

Dependent Claim 11 words

The method of claim 1 wherein said cement is Portland cement.

Claim 13

Dependent Claim 11 words

The method of claim 1 wherein said cement is aluminate cement.

Claim 14

Dependent Claim 11 words

The method of claim 1 wherein said cement is slag cement.

Claim 15

Dependent Claim 10 words

A cement mortar obtained by the method of claim 1.

Claim 16

Independent Claim 177 words

A method for producing a light aggregate concrete of density less than 1400 kg/m 3 from a cement mortar comprised of cement, solid particles, and water and having finely distributed gas in the mortar in an amount sufficient to provide said mortar with a density of 1200-2000 kg/m 3 , and 45-80 percent by volume of a light aggregate material with a particle density of less than 1200 kg/m 3 wherein the cement mortar entirely fills out the space between the aggregate particles which comprises initiating of distribution of said finely distributed gas in said mortar by incorporating prior to admixing said light ballast with said cement mortar 0.2-5.0 percent by weight based upon the amount of said cement in said mortar of a particle-shaped hydrophilic-hydrophobic balanced product chemically inert in relation to the rest of said mortar and consisting of substantially spherical hydrophobic particles of 0.1-1.0 μm strongly adsorbed on the surface of which is a hydrophilic nonionic tenside in amount of 0.1 to 5.0 percent by weight based on the total weight of said product.

Claim 17

Independent Claim 177 words

A method for producing a light aggregate concrete of density less than 1400 kg/m 3 from a cement mortar comprised of cement, solid particles, and water and having finely distributed gas in the mortar in an amount sufficient to provide said mortar with a density of 1200-2000 kg/m 3 , and 45-80 percent by volume of a light aggregate material with a particle density of less than 1200 kg/m 3 wherein the cement mortar entirely fills out the space between the aggregate particles which comprises initiating of distribution of said finely distributed gas in said mortar by incorporating prior to admixing said light ballast with said cement mortar 0.2-5.0 percent by weight based upon the amount of said cement in said mortar of a particle-shaped hydrophilic-hydrophobic balanced product chemically inert in relation to the rest of said mortar and consisting of substantially spherical hydrophobic particles of 0.1-1.0 μm strongly adsorbed on the surface of which is a hydrophilic nonionic tenside in amount of 0.1 to 5.0 percent by weight based on the total weight of said product.

Claim 18

Dependent Claim 82 words

The method of claim 15 which comprises introducing into said mortar a particle-shaped product of a homopolymer or copolymer of styrene, or at least one ester of acrylic or methacrylic acid, or copolymer of styrene and said ester wherein said ester has the formula: ##STR3## in which R 1 =H or CH 3 and R 2 =an alcohol radical with 1-8 carbon atoms with a particle size of 0.2-0.6 μm having adsorbed on its surface 0.1-3.0 percent by weight of nonionic tenside.

Claim 19

Dependent Claim 46 words

The method of claim 16 wherein said ester is methyl acrylate or ethyl acrylate or propyl acrylate or butyl acrylate or hexyl acrylate or 2-ethyl hexyl acrylate or methyl methacrylate or ethyl methacrylate or butyl methacrylate or hexyl methacrylate or 2-ethyl hexyl methacrylate or mixtures thereof.

Claim 20

Dependent Claim 43 words

The method of claim 15 which comprises introducing into said mortar a particle-shaped product of a copolymer of vinylidene chloride and acrylic acid ester or a homopolymer of vinylidene chloride having adsorbed on its surface of 0.1-3.0 percent by weight of nonionic tenside.

Claim 21

Dependent Claim 31 words

The method of claim 15 which comprises introducing into said mortar a particle-shaped product of a copolymer of styrene-butadiene having adsorbed on its surface 0.1-5.0 percent by weight of nonionic tenside.

Claim 22

Dependent Claim 23 words

The method of claim 15 which comprises introducing into said mortar a particle-shaped product of polyethylene with a particle size of 0.2-0.6 μm.

Claim 23

Dependent Claim 15 words

The method of claim 15 wherein said spherical hydrophobic particles are of a natural product.

Claim 24

Dependent Claim 18 words

The method of claim 21 wherein said natural product is asphalt having a particle size of 0.1-0.8 μm.

Claim 25

Dependent Claim 22 words

The method of claim 15 which comprises initiating drawing in of finely distributed air into said mortar by introducing said particle-shaped product.

Claim 26

Dependent Claim 11 words

The method of claim 15 wherein said solid particles are sand.

Claim 27

Dependent Claim 11 words

A light aggregate concrete obtained by the method of claim 15.

Claim 28

Independent Claim 127 words

A method for producing a hardened cement mortar wherein the major portion of all pores thereof are 5-30 μm containing cement, solid particles and water and having finely distributed gas in the mortar in an amount sufficient to provide said mortar with a density of 1200-2000 kg/m 3 which comprises introducing into the mortar prior to setting thereof 0.2-5.0 percent by weight based upon the quantity of cement of a particle-shaped hydrophilic-hydrophobic balanced product chemically inert in relation to the rest of the mortar and consisting of substantially spherical hydrophobic particles of 0.1-1.0 μm strongly adsorbed on the surface of which is a hydrophilic nonionic tenside in amount of 0.1-5.0 percent by weight based on the total weight of said product, and allowing the composition to harden.

Claim 29

Independent Claim 127 words

A method for producing a hardened cement mortar wherein the major portion of all pores thereof are 5-30 μm containing cement, solid particles and water and having finely distributed gas in the mortar in an amount sufficient to provide said mortar with a density of 1200-2000 kg/m 3 which comprises introducing into the mortar prior to setting thereof 0.2-5.0 percent by weight based upon the quantity of cement of a particle-shaped hydrophilic-hydrophobic balanced product chemically inert in relation to the rest of the mortar and consisting of substantially spherical hydrophobic particles of 0.1-1.0 μm strongly adsorbed on the surface of which is a hydrophilic nonionic tenside in amount of 0.1-5.0 percent by weight based on the total weight of said product, and allowing the composition to harden.

Claim 30

Dependent Claim 89 words

A cement mortar comprising cement, solid particles, water, finely distributed gas in an amount to provide said mortar with a density of 1200-2000 kg/m 3 , and 0.2-5.0 percent by weight based upon the quantity of said cement of a particle-shaped hydrophilic-hydrophobic balanced product chemically inert to the rest of the mortar and consisting of substantially spherical hydrophobic particles of 0.1-1.0 μm strongly adsorbed on the surface of which is a hydrophilic nonionic tenside in amount of 0.1-5.0 percent by weight based on the total weight of said product.

Claim 31

Dependent Claim 89 words

A cement mortar comprising cement, solid particles, water, finely distributed gas in an amount to provide said mortar with a density of 1200-2000 kg/m 3 , and 0.2-5.0 percent by weight based upon the quantity of said cement of a particle-shaped hydrophilic-hydrophobic balanced product chemically inert to the rest of the mortar and consisting of substantially spherical hydrophobic particles of 0.1-1.0 μm strongly adsorbed on the surface of which is a hydrophilic nonionic tenside in amount of 0.1-5.0 percent by weight based on the total weight of said product.

Claim 32

Dependent Claim 149 words

A light aggregate concrete of density less than 1400 kg/m 3 from a cement mortar comprised of cement, solid particles, and water and having finely distributed gas in the mortar in an amount sufficient to provide said mortar with a density of 1200-2000 kg/m 3 , and 45-80 percent by volume of a light aggregate material with a particle density of less than 1200 kg/m 3 wherein the cement mortar entirely fills out the space between the aggregate particles and 0.2-5.0 percent by weight based upon the amount of said cement in said mortar of a particle-shaped hydrophilic-hydrophobic balanced product chemically inert in relation to the rest of said mortar and consisting of substantially spherical hydrophobic particles of 0.1-1.0 μm strongly adsorbed on the surface of which is a hydrophilic nonionic tenside in amount of 0.1 to 5.0 percent by weight based on the total weight of said product.

Claim 33

Dependent Claim 149 words

A light aggregate concrete of density less than 1400 kg/m 3 from a cement mortar comprised of cement, solid particles, and water and having finely distributed gas in the mortar in an amount sufficient to provide said mortar with a density of 1200-2000 kg/m 3 , and 45-80 percent by volume of a light aggregate material with a particle density of less than 1200 kg/m 3 wherein the cement mortar entirely fills out the space between the aggregate particles and 0.2-5.0 percent by weight based upon the amount of said cement in said mortar of a particle-shaped hydrophilic-hydrophobic balanced product chemically inert in relation to the rest of said mortar and consisting of substantially spherical hydrophobic particles of 0.1-1.0 μm strongly adsorbed on the surface of which is a hydrophilic nonionic tenside in amount of 0.1 to 5.0 percent by weight based on the total weight of said product.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1982-06-11	1982-12-11	1983-06-12	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1986-06-11	1986-12-11	1987-06-12	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1990-06-11	1990-12-11	1991-06-12	$7700.00	Window Closed / Lapsed

Method of producing a cement mortar with good stability in a fresh condition and a method using this mortar as a binding agent of producing a lightweight aggregate concrete with a high aggregate content

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