US4088504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing high strength cement conglomerates
Assignee: Emesa AG
•
Filing: 1976-06-11
•
Granted: 1978-05-09
•
Expires: 1996-06-11
Abstract
Abstract A method for producing high strength cement conglomerates is disclosed. Cement conglomerates (pastes, mortars, concretes and the like) having improved mechanical characteristics, are produced in accordance with the invention by adding to a mix of water, binder and aggregates a admixture or composition containing: (1) a polymer obtained by polycondensation of an aldehyde with a water-soluble sulphonic acid of the aromatic series, and (2) a product of the hydrolysis of starch obtained from raw vegetable materials such as maize, wheat, rice, potatoes, etc. Water soluble inorganic electrolytes may advantageously be added to the admixture for significantly improving the characteristics of fluidity and cohesion of the fresh mix, and the characteristics of strength of the hardened mix.
Inventors
- 👤 Mario Collepardi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:29
CPC Classifications
C; C08; C08G; C08G16/00; C08G16/02; C08G16/0212; C08G16/0218; C08G16/0237; C04; C04B; C04B28/00; C04B28/02; C08L; C08L61/00
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
64 words
A method for producing high strength cement conglomerates comprising adding to a mix of water, inorganic binder and aggregates a mixture containing: a polymer obtained by polycondensation of an aldehyde with a sulphonic acid of the aromatic series, free or salifed, soluble in water (Component No. 1), and a product of the hydrolysis of starch obtained from any raw vegetable material (Component No. 2).
Claim 2
Independent Claim
64 words
A method for producing high strength cement conglomerates comprising adding to a mix of water, inorganic binder and aggregates a mixture containing: a polymer obtained by polycondensation of an aldehyde with a sulphonic acid of the aromatic series, free or salifed, soluble in water (Component No. 1), and a product of the hydrolysis of starch obtained from any raw vegetable material (Component No. 2).
Claim 3
Dependent Claim
32 words
The method in accordance with claim 1 wherein the admixture comprises a polymer obtained by polycondensation of formaldehyde with a sulphonic acid of the aromatic series, free or salified, soluble in water.
Claim 4
Dependent Claim
37 words
The method in accordance with claim 1 wherein the admixture comprises a polymer obtained by polycondensation of formaldehyde with an acid, free or salified, selected from at least one of the group comprising alkylbenzenesulphonic acids, benzenesulphonic acids.
Claim 5
Dependent Claim
26 words
The method in accordance with claim 1 wherein the admixture comprises a polymer obtained by polycondensation of formaldehyde with sodium naphtalenesulphonate of α or β type.
Claim 6
Dependent Claim
30 words
The method in accordance with claim 1 wherein the mixture comprises a polyglucosaccharide prepared by the acidic, thermic or enzymatic hydrolysis of the starch obtained by any vegetable raw material.
Claim 7
Dependent Claim
27 words
The method as defined in claim 1 wherein the hydrolized starch contains at least 30% by weight of polymers with a polymerisation degree between 3 and 7.
Claim 8
Dependent Claim
29 words
The method as defined in claim 1 wherein the binary mixture has the following composition by weight: component No. 1 5 to 99.9% component No. 2 0.1 to 95%
Claim 9
Dependent Claim
25 words
The method as defined in claim 1, comprising adding as a third component (component No. 3) to the said admixture, a water soluble inorganic electrolyte.
Claim 10
Dependent Claim
18 words
The method as defined in claim 8 comprising adding to the admixture an inorganic electrolyte of alkali metals.
Claim 11
Dependent Claim
48 words
The method as defined in claim 9 comprising adding to the said admixture, the sodium salt of an acid selected from the group consisting of carbonic acid, nitric acid, nitrous acid, phosphoric acid, metaphosphoric acid, polyphosphoric acid, hydrochloric acid, sulphuric aicd, sulphurous acid, prophosphoric acid or mixtures thereof.
Claim 12
Dependent Claim
14 words
The method as defined in claim 8 wherein the said electrolyte is sodium sulfate.
Claim 13
Dependent Claim
48 words
The method as defined in claim 1 comprising adding to the said admixture the ammonium salt of an acid selected from the group consisting of carbonic acid, nitric acid, nitrous acid, phosphoric acid, metaphosphoric acid, polyphosphoric, acid, hydrochloric acid, sulphuric acid, sulphurous acid, pyrophosphoric acid or mixtures thereof.
Claim 14
Dependent Claim
14 words
The method as defined in claim 8 wherein said electrolyte is an alkali hydroxide.
Claim 15
Dependent Claim
13 words
The method as defined in claim 4 wherein said hydroxide is sodium hydroxide.
Claim 16
Dependent Claim
13 words
The method as defined in claim 8 wherein said electrolyte is ammonium hydroxide.
Claim 17
Dependent Claim
35 words
The method as defined in claim 8 wherein the ternary mixture has the following composition by weight: component No. 1: 5 to 99.8% component No. 2: 0.1 to 65% component No. 3: 0.1 to 65%
Claim 18
Dependent Claim
27 words
The method as defined in claim 1 comprising adding the admixture into the mix to the extent of from about 0.01 to 3% of the binder weight.
Claim 19
Dependent Claim
18 words
The method as defined in claim 1 comprising curing the admixture under low pressure steam (< 1 atm).
Claim 20
Dependent Claim
23 words
The method as claimed in claim 1 comprising subjecting the admixture to autoclave treatment under steam at a pressure greater than 1 atm.
Claim 21
Dependent Claim
29 words
The method as defined in claim 7 wherein the binary admixture has the following composition by weight: component No. 1: 40 to 95% component No. 2: 5 to 60%
Claim 22
Dependent Claim
35 words
The mehod as defined in claim 16 wherein the ternary admixture has the following composition by weight: component No. 1: 30 to 90% component No. 2: 1 to 10% component No. 3: 5 to 40%
Claim 23
Dependent Claim
27 words
The method as defined in claim 17 comprising adding the admixture into the mix to the extent of from about 0.1 to 1% of the binder weight.
References Cited (Backward Citations)
US2358730A
Cited
US2662024A
Cited
US3272765A
Cited
US3520708A
Cited
US3802894A
Cited
USB465955I5
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-08 | 1981-11-07 | 1982-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-08 | 1985-11-07 | 1986-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-08 | 1989-11-07 | 1990-05-09 | $7700.00 | Window Closed / Lapsed |