GB571901A - Improvements in the method of manufacture of pre-cast pre-stressed concrete structures - Google Patents
Improvements in the method of manufacture of pre-cast pre-stressed concrete structuresInfo
- Publication number
- GB571901A GB571901A GB2183243A GB2183243A GB571901A GB 571901 A GB571901 A GB 571901A GB 2183243 A GB2183243 A GB 2183243A GB 2183243 A GB2183243 A GB 2183243A GB 571901 A GB571901 A GB 571901A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wires
- concrete
- day
- stressed concrete
- shorten
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
571,901. Reinforced concrete. PRE-STRESSED CONCRETE CO., Ltd., and MAUTNER, K. W. Dec. 30, 1943, No. 21832. [Class 20 (iv)] A method of making pre-stressed concrete elements consists in stretching high grade tensile wires, casting the concrete around the stretched wires, and subsequently releasing the wires gradually and intermittently in several stages during the hardening period with time intervals between each releasing operation. It is stated that by this method it is possible to secure adequate compressive as well as bond strength in a shorter time than if the wires are released in one operation. In one example wires of 40 feet in length and so stretched that they will shorten by 6 inches in the finished article are released to shorten by ¢ inch after three days hardening of the concrete. A further 1 inch shortening is allowed on the fourth day, another 1¥ inches on the fifth day, and the remaining shortening permitted on the sixth or seventh day. Specifications 338,864, 338,934, [both in Class 20 (iv)], 541,835, 554,693 and 554,970 are referred to.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2183243A GB571901A (en) | 1943-12-30 | 1943-12-30 | Improvements in the method of manufacture of pre-cast pre-stressed concrete structures |
FR941860D FR941860A (en) | 1943-12-30 | 1946-08-29 | Improvements to the manufacturing process of precast prestressed concrete parts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2183243A GB571901A (en) | 1943-12-30 | 1943-12-30 | Improvements in the method of manufacture of pre-cast pre-stressed concrete structures |
Publications (1)
Publication Number | Publication Date |
---|---|
GB571901A true GB571901A (en) | 1945-09-13 |
Family
ID=10169556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2183243A Expired GB571901A (en) | 1943-12-30 | 1943-12-30 | Improvements in the method of manufacture of pre-cast pre-stressed concrete structures |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR941860A (en) |
GB (1) | GB571901A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3401109A (en) * | 1964-09-28 | 1968-09-10 | Hooker Chemical Corp | Reinforced concrete parts for electrolytic cells |
-
1943
- 1943-12-30 GB GB2183243A patent/GB571901A/en not_active Expired
-
1946
- 1946-08-29 FR FR941860D patent/FR941860A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3401109A (en) * | 1964-09-28 | 1968-09-10 | Hooker Chemical Corp | Reinforced concrete parts for electrolytic cells |
Also Published As
Publication number | Publication date |
---|---|
FR941860A (en) | 1949-01-24 |
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