US4238236A
Expired / Lapsed
US
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Rapidly cold weather setting/hardening mortars and concretes comprised of hydraulic binders
Assignee: Rhone Poulenc Industries SA
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Filing: 1979-04-20
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Granted: 1980-12-09
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Expires: 1999-04-20
Abstract
Abstract Mortars and concretes are formulated from hydraulic binders, and are adapted for more rapid setting and hardening in cold weather, such formulations including the admixture of hydraulic binder, aggregates and water, and such formulations being characterized in that they include: (a) a water-soluble dispersant/water-reducing agent; (b) an inorganic basic agent selected from the group comprising the hydroxides of alkali metals other than lithium, alkaline earth metal hydroxides and the mixtures of one of such hydroxides with lithium hydroxide; and (c) a water-soluble salt of an inorganic oxyacid or an aliphatic or aromatic carboxylic acid, said acid having an ionization constant pKa of less than 2.5 in water at 25 DEG C.
Inventors
- 👤 Pierre Falcoz
- 👤 Raymond Filhol
- 👤 Jean-Noel Communal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:24
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B24/00; C04B24/12
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
108 words
In a process for the formulation of mortars and concretes from hydraulic binders, adapted for more rapid setting and hardening and including the admixture of hydraulic binder, aggregates and water, the improvement which comprises including in said mix: (a) a water-soluble dispersant/water-reducing agent; (b) an inorganic basic agent selected from the group comprising the hydroxides of alkali metals other than lithium, alkaline earth metal hydroxides and the mixtures of one of such hydroxides with lithium hydroxide; and (c) a water-soluble salt of an inorganic oxyacid or an aliphatic or aromatic carboxylic acid, said acid having an ionization constant pKa of less than 2.5 in water at 25° C.
Claim 2
Dependent Claim
108 words
In a process for the formulation of mortars and concretes from hydraulic binders, adapted for more rapid setting and hardening and including the admixture of hydraulic binder, aggregates and water, the improvement which comprises including in said mix: (a) a water-soluble dispersant/water-reducing agent; (b) an inorganic basic agent selected from the group comprising the hydroxides of alkali metals other than lithium, alkaline earth metal hydroxides and the mixtures of one of such hydroxides with lithium hydroxide; and (c) a water-soluble salt of an inorganic oxyacid or an aliphatic or aromatic carboxylic acid, said acid having an ionization constant pKa of less than 2.5 in water at 25° C.
Claim 3
Dependent Claim
25 words
The process as defined by claim 1, the amount of water admixed being at least that amount stoichiometrically required for hydration of the hydraulic binder.
Claim 4
Dependent Claim
29 words
The process as defined in claim 1, the salt (c) being substituted with a member selected from the group consisting of a hydrocarbon substituent and a non-halo functional group.
Claim 5
Dependent Claim
80 words
The process as defined by claim 1, wherein the dispersant/water-reducing agent (a) comprises the water-soluble salts of condensation products, having a molecular weight between 1,500 and 10,000 and obtained by condensing, with formaldehyde, products resulting form the sulfonation of monocyclic or fused polycyclic hydrocarbons containing from 1 to 12 benzene nuclei, or a mixture of the said salts with water-soluble salts derived from the products resulting from the sulfonation of fused polycyclic aromatic hydrocarbons containing 2 to 12 benzene nuclei.
Claim 6
Dependent Claim
25 words
The process as defined by claim 1, wherein the dispersant/water-reducing agent (a) comprises the water-soluble salts of products resulting from the sulfonation of melamine/formaldehyde resins.
Claim 7
Dependent Claim
46 words
The process as defined by claims 1, 4 or 5, wherein the inorganic basic agent (b) is selected from the group comprising the hydroxides of sodium, potassium, magnesium, calcium, strontium and barium, and binary mixtures of lithium hydroxide with the hydroxides of sodium, potassium and calcium.
Claim 8
Dependent Claim
47 words
The process as defined by claims 1, 4, or 5, wherein the salt (c) is selected from the group comprising the alkali metal salts and the ammonium salts derived from nitric, sulfurous, sulfuric, phosphorous, orthophosphoric, pyrophosphoric, chromic, cyannoacetic, cyanopropionic, dihydroxymalic, maleic, oxalic, orthonitrobenzoic and 2,4,6 trihydroxybenzoic acids.
Claim 9
Dependent Claim
85 words
The process as defined by claim 1, wherein the adjuvants (a), (b) and (c) are present in the amounts: 0.05 to 3% by weight, relative to the hydraulic binder, of dispersant/water-reducing agent (a), 0.01 to 1% by weight, relative to the hydraulic binder, of hydroxide of alkali metals other than lithium, or of alkaline earth metal hydroxide, 0 to 0.5% by weight, relative to the hydraulic binder, of lithium hydroxide, and 0.05 to 2% by weight, relative to the hydraulic binder, of water-soluble salt (c).
Claim 10
Dependent Claim
14 words
The process as defined by claim 1, wherein the hydraulic binder is a cement.
Claim 11
Dependent Claim
28 words
The process as defined by claim 9, wherein the weight ratio water/cement in the mixture cement/aggregates/adjuvants (a)+(b)+(c)/water is less than 0.5 and is equal to at least 0.3.
Claim 12
Dependent Claim
28 words
The process as defined by claim 1, wherein the weight ratio water/binder in the mixture hydraulic binder/aggregates/adjuvants (a)+(b)+(c)/water is such that the fluidity of the admixture is maintained.
Claim 13
Dependent Claim
75 words
A composition of matter comprising: (a) a water-soluble dispersant/water-reducing agent; (b) an inorganic basic agent selected from the group comprising the hydroxides of alkali metals other than lithium, alkaline earth metal hydroxides and the mixtures of one of such hydroxides with lithium hydroxide; and (c) a water-soluble salt of an inorganic oxyacid or an aliphatic or aromatic carboxylic acid, said acid having an ionization constant pKa of less than 2.5 in water at 25° C.
Claim 14
Dependent Claim
75 words
A composition of matter comprising: (a) a water-soluble dispersant/water-reducing agent; (b) an inorganic basic agent selected from the group comprising the hydroxides of alkali metals other than lithium, alkaline earth metal hydroxides and the mixtures of one of such hydroxides with lithium hydroxide; and (c) a water-soluble salt of an inorganic oxyacid or an aliphatic or aromatic carboxylic acid, said acid having an ionization constant pKa of less than 2.5 in water at 25° C.
Claim 15
Dependent Claim
82 words
The composition of matter as defined by claim 12, wherein the dispersant/water-reducing agent (a) comprises the water-soluble salts of condensation products, having a molecular weight between 1,500 and 10,000 and obtained by condensing, with formaldehyde, products resulting form the sulfonation of monocyclic or fused polycyclic hydrocarbons containing from 1 to 12 benzene nuclei, or a mixture of the said salts with water-soluble salts derived from the products resulting from the sulfonation of fused polycyclic aromatic hydrocarbons containing 2 to 12 benzene nuclei.
Claim 16
Dependent Claim
27 words
The composition of matter as defined by claim 12, wherein the dispersant/water-reducing agent (a) comprises the water-soluble salts of products resulting from the sulfonation of melamine/formaldehyde resins.
Claim 17
Dependent Claim
48 words
The composition of matter as defined by claims 12, 13 or 14, wherein the inorganic basic agent (b) is selected from the group comprising the hydroxides of sodium, potassium, magnesium, calcium, strontium and barium, and binary mixtures of lithium hydroxide with the hydroxides of sodium, potassium and calcium.
Claim 18
Dependent Claim
49 words
The composition of matter as defined by claims 12, 13, or 14, wherein the salt (c) is selected from the group comprising the alkali metal salts and the ammonium salts derived from nitric, sulfurous, sulfuric, phosphorous, orthophosphoric, pyrophosphoric, chromic, cyannoacetic, cyanopropionic, dihydroxymalic, maleic, oxalic, orthonitrobenzoic and 2,4,6 trihydroxybenzoic acids.
Claim 19
Dependent Claim
81 words
A composition of matter comprising: (a) an hydraulic binder; (b) aggregates; (c) a water-soluble dispersant/water-reducing agent; (d) an inorganic basic agent selected from the group comprising the hydroxides of alkali metals other than lithium, alkaline earth metal hydroxides and the mixtures of one of such hydroxides with lithium hydroxide; and (e) a water-soluble salt of an inorganic oxyacid or an aliphatic or aromatic carboxylic acid, said acid having an ionization constant pKa of less than 2.5 in water at 25° C.
Claim 20
Dependent Claim
81 words
A composition of matter comprising: (a) an hydraulic binder; (b) aggregates; (c) a water-soluble dispersant/water-reducing agent; (d) an inorganic basic agent selected from the group comprising the hydroxides of alkali metals other than lithium, alkaline earth metal hydroxides and the mixtures of one of such hydroxides with lithium hydroxide; and (e) a water-soluble salt of an inorganic oxyacid or an aliphatic or aromatic carboxylic acid, said acid having an ionization constant pKa of less than 2.5 in water at 25° C.
Claim 21
Dependent Claim
16 words
The composition of matter as defined by claim 17, the hydraulic binder (a) being a cement.
Claim 22
Dependent Claim
14 words
The composition of matter as defined by claim 18, said cement being Portland cement.
Claim 23
Dependent Claim
26 words
The composition of matter as defined by claim 17, further comprising water, in an amount at least that stoichiometrically required for hydration of the hydraulic binder.
Claim 24
Dependent Claim
15 words
A shaped article comprising the composition of matter as defined by claims 17 or 20.
Claim 25
Dependent Claim
43 words
The process as defined by claim 6 wherein the salt (c) is selected from the group comprising the alkali metal salts and the ammonium salts derived from nitric, sulfurous, sulfuric, phosphorous, orthophosphoric, pyrophosphoric, chromic, cyannoacetic, cyanopropionic, dihydroxymalic, maleic, oxalic, orthonitrobenzoic and 2,4,6-trihydroxybenzoic acids.
Claim 26
Dependent Claim
45 words
The composition of matter as defined by claim 15 wherein the salt (c) is selected from the group comprising the alkali metals salts and the ammonium salts derived from nitric, sulfurous, sulfuric, phosphorous, orthophosphoric, pyrophosphoric, chromic, cyannoacetic, cyanopropionic, dihydroxymalic, maleic, oxalic, orthonitrobenzoic and 2,4,6-trihydroxybenzoic acids.
Claim 27
Dependent Claim
77 words
A composition of matter consisting essentially of: (a) a water-soluble dispersant/water-reducing agent; (b) an inorganic basic agent selected from the group comprising the hydroxides of alkali metals other than lithium, alkaline earth metal hydroxides and the mixtures of one of such hydroxides with lithium hydroxide; and (c) a water-soluble salt of an inorganic oxyacid or an aliphatic or aromatic carboxylic acid, said acid having an ionization constant pKa of less than 2.5 in water at 20° C.
Claim 28
Dependent Claim
77 words
A composition of matter consisting essentially of: (a) a water-soluble dispersant/water-reducing agent; (b) an inorganic basic agent selected from the group comprising the hydroxides of alkali metals other than lithium, alkaline earth metal hydroxides and the mixtures of one of such hydroxides with lithium hydroxide; and (c) a water-soluble salt of an inorganic oxyacid or an aliphatic or aromatic carboxylic acid, said acid having an ionization constant pKa of less than 2.5 in water at 20° C.
Claim 29
Dependent Claim
83 words
A composition of matter consisting essentially of: (a) an hydraulic binder; (b) aggregates; (c) a water-soluble dispersant/water-reducing agent; (d) an inorganic basic agent selected from the group comprising the hydroxides of alkali metals other than lithium, alkaline earth metal hydroxides and the mixtures of one of such hydroxides with lithium hydroxide; and (e) A water-soluble salt of an inorganic oxyacid or an aliphatic or aromatic carboxylic acid, said acid having an ionization constant pKa of less than 2.5 in water at 25° C.
Claim 30
Dependent Claim
83 words
A composition of matter consisting essentially of: (a) an hydraulic binder; (b) aggregates; (c) a water-soluble dispersant/water-reducing agent; (d) an inorganic basic agent selected from the group comprising the hydroxides of alkali metals other than lithium, alkaline earth metal hydroxides and the mixtures of one of such hydroxides with lithium hydroxide; and (e) A water-soluble salt of an inorganic oxyacid or an aliphatic or aromatic carboxylic acid, said acid having an ionization constant pKa of less than 2.5 in water at 25° C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-09 | 1984-06-09 | 1984-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-09 | 1988-06-09 | 1988-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-09 | 1992-06-09 | 1992-12-09 | $7700.00 | Window Closed / Lapsed |