PL100784B1 - THE METHOD OF MAKING WORK SEAMS IN CONCRETE AND REINFORCED CONCRETE ENGINEERING STRUCTURES - Google Patents
THE METHOD OF MAKING WORK SEAMS IN CONCRETE AND REINFORCED CONCRETE ENGINEERING STRUCTURES Download PDFInfo
- Publication number
- PL100784B1 PL100784B1 PL18395775A PL18395775A PL100784B1 PL 100784 B1 PL100784 B1 PL 100784B1 PL 18395775 A PL18395775 A PL 18395775A PL 18395775 A PL18395775 A PL 18395775A PL 100784 B1 PL100784 B1 PL 100784B1
- Authority
- PL
- Poland
- Prior art keywords
- concrete
- seams
- engineering structures
- old
- preparation
- Prior art date
Links
- 239000004567 concrete Substances 0.000 title claims description 29
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 239000011150 reinforced concrete Substances 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 4
- 239000002344 surface layer Substances 0.000 claims description 3
- 230000001934 delay Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000009415 formwork Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- KSQXVLVXUFHGJQ-UHFFFAOYSA-M Sodium ortho-phenylphenate Chemical compound [Na+].[O-]C1=CC=CC=C1C1=CC=CC=C1 KSQXVLVXUFHGJQ-UHFFFAOYSA-M 0.000 description 1
- 229920005551 calcium lignosulfonate Polymers 0.000 description 1
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 235000013379 molasses Nutrition 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Landscapes
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Description
Przedmiotem wynalazku jest sposób wykonywania szwów roboczych w betonowych i zelbetowych konstrukcjach inzynierskich zwlaszcza w budownictwie hydrotechnicznym. • W znanym stanie techniki dla zapewnienia powiazania betonu stwardnialego, uprzednio wykonanego, ze swiezo ukladanym, tradycyjnie wykonuje sie reczne lub mechaniczne skuwanie powierzchni stwardnialego betonu, co ma na celu zwiekszenie powierzchni styku i usuniecie warstwy stwardnialego zaczynu cementowego.The subject of the invention is a method of making working seams in concrete and reinforced concrete engineering structures, especially in hydrotechnical construction. • In the known art, to ensure the bonding of hardened concrete, previously made, freshly laid, manual or mechanical chipping of the hardened surface is traditionally performed concrete, which aims to increase the contact surface and remove the layer of hardened cement grout.
Czynnosc ta jest stosunkowo prosta i malo pracochlonna w przypadku szwów poziomych, gdzie wystarcza splukanie silnym strumieniem wody w poczatkowym okresie twardnienia betonu. Przy szwach pionowych do obróbki powierzchni mozna przystapic po rozdeskowaniu elementu, a zatem po osiagnieciu przez beton okreslonej wytrzymalosci. Skuwanie powierzchni stwardnialego betonu wymaga znacznych nakladów robocizny a w przypadku duzych wysokosci elementu dodatkowo montazu pomostów roboczych.This operation is relatively simple and not very labor-intensive in the case of horizontal seams, where it is sufficient rinsing with a strong stream of water in the initial period of concrete hardening. For vertical seams up to surface treatments can be started after the element has been stroked, i.e. after the concrete reaches it specified strength. Chipping the surface of hardened concrete requires a significant amount of labor and in the case of large element heights, additional assembly of working platforms.
Istota wynalazku wykonywania szwów roboczych w betonowych i zelbetowych konstrukcjach inzyniers¬ kich jest polaczenie betonu starego z nowym w wyniku odsloniecia kruszywa grubego na powierzchni starego betonu przez zastosowanie preparatu, który opóznia wiazanie i twardnienie cementu w warstwie przypowierzch¬ niowej betonu starego. Po usunieciu niezwiazanej warstwy zwieksza sie powierzchnia styku betonu co pozwala na uzyskanie monolitycznego polaczenia betonu starego z nowym. • W praktycznym przykladzie wykonania wynalazku sposób polega na -powleczeniu tej powierzchni deskowania, która bedzie miala kontakt z mieszanka betonowa, preparatem, w sklad którego wchodza srodki opózniajace wiazanie cementu, srodki obnizajace napiecie powierzchniowe wody, srodki zwiekszajace przyczep¬ nosc preparatu do deskowania, srodki konserwujace oraz woda. Przykladowy sklad preparatu jest nastepujacy: melasa od 50 do 70%, lignosulfonian wapnia od 3 do 11%, wodna dyspersja lateksu lub polioctanu winylu od 2-10%, ortofenylofenolan sodowy 0,05%, woda okolo 30%. Preparat moze byc nakladany na powierzchnie deskowania pedzlem, walkiem lub natryskiem. Po wyschnieciu preparatu, co trwa zaleznie od temperatury otoczenia, kilka do kilkunastu godzin, mozna przystapic do montazu deskowania i nastepnie betonowania.The essence of the invention of making working seams in concrete and reinforced concrete engineering structures It is difficult to combine old and new concrete by exposing coarse aggregate on the surface of the old one concrete by applying a preparation that delays the setting and hardening of the cement in the surface layer old concrete. After removing the unbound layer, the contact surface of the concrete increases, which allows to obtain a monolithic connection of old and new concrete. • In a practical embodiment of the invention, the method consists in coating the surface formwork, which will come into contact with the concrete mix, a preparation that includes Cement Retardants, Water Tension Depressants, Adhesion Increasing Agents use of the formwork agent, preservatives and water. An exemplary composition of the preparation is as follows: molasses from 50 to 70%, calcium lignosulfonate from 3 to 11%, water dispersion of latex or polyvinyl acetate from 2-10%, sodium orthophenylphenate 0.05%, water about 30%. The preparation can be applied to surfaces formwork with a brush, roller or spray. After the preparation dries, which lasts depending on the temperature environment, a few to several hours, you can start assembling the formwork and then concreting.
Przy duzych wymiarach elementów nanoszenie preparatu na deskowanie moze miec miejsce po zmontowaniu deskowania.2 100 784 Beton w warstwie przypowierzchniowej, majacej kontakt z przygotowana jak wyzej powierzchnia deskowa¬ nia ma opóznione wiazanie. Grubosc tej warstwy do okolo 2 cm moze byc regulowana przez zmiane stezenia preparatu, przez rozcienczenie woda. Po rozdeskowaniu, niezwiazana warstwe usuwa sie mechanicznie lub silnym strumieniem wody. Uzyskuje sie chropowata powierzchnie z odslonietego kruszywa grubego, utwierdzonego w stwardnialym podlozu betonowym. Dzieki duzej powierzchni rozwinietej otrzymuje sie po dobetonowaniu monolityczne powiazanie betonu starego z nowym. » .With large dimensions of the elements, the application of the preparation on the formwork may take place after assembling the formwork. 2 100 784 Concrete in the near-surface layer, having contact with the boarding surface prepared as above it has a delayed bond. The thickness of this layer up to about 2 cm can be adjusted by changing the concentration preparation by diluting with water. After striking, the unbound layer is removed either mechanically or forcefully with a stream of water. A rough surface is obtained from exposed coarse, restrained aggregate in a hardened concrete substrate. Due to the large developed surface it is obtained after concreting monolithic bond between old and new concrete. ».
Przeprowadzone badania laboratoryjne oraz póltechniczne wykazaly poprawe parametru wodoszczelnosci szwu roboczego wykonanego sposobem wedlug wynalazku w stosunku do szwu wykonanego znana metoda skuwania stwardnialego betonu a wartosc parametru uzyskiwanej wodoszczelnosci sposobem wedlug wynalazku jest zblizona do wartosci parametru wodoszczelnosci betonu monolitycznego.The conducted laboratory and field tests showed an improvement in the water-tightness parameter a work seam made according to the invention in relation to a seam made according to the known method chipping of hardened concrete and the value of the parameter of obtained water tightness by the method according to the invention is close to the value of the water resistance parameter of monolithic concrete.
Odmiana sposobu wykonywania szwów roboczych .polega na laczeniu elementów prefabrykowanych.A variation of the method of making working seams consists in joining prefabricated elements.
W tym przypadku nalezy powlec preparatem te wewnetrzna powierzchnie formy, która przylega do powierzchni elementu betonowego majacego' tworzyc styk z pozostala konstrukcja przez dobetonowanie lub wypelnienie swiezym betonem dla uzyskania monolitycznosci konstrukcji Zaletami sposobu wedlug wynalazku sa: poprawa parametru wodoszczelnosci szwu roboczego, mozliwosc regulowania lepkosci preparatu i glebokosci jego penetracji przez odpowiednie zmiany ilosci wody, mozliwosc sporzadzania preparatu — opózniacza kontaktowego, nawet w warunkach budowy z powszechnie dostepnych i tanich skladników, zmniejszenie nakladów robocizny zywej w stosowanej dotychczas technologii skuwania w stosunku do wystepujacej robocizny zywej w technologii wedlug wynalazku.In this case, coat the inner surface of the mold that adheres to the surface with the preparation a concrete element which is to make contact with the other structure by concreting or filling fresh concrete for monolithic structure The advantages of the method according to the invention are: improvement of the water-tightness parameter of the working seam, possibility regulate the viscosity of the preparation and the depth of its penetration by appropriate changes in the amount of water, possible preparation of the preparation - contact retarder, even under construction conditions from commonly available and cheap ingredients, reduction of labor inputs in the hitherto used chiselling technology in relation to the existing labor in the technology according to the invention.
Wynalazek moze miec szerokie zastosowanie w budownictwie do wykonywania: pionowych szwów roboczych bloków betonowych w budownictwie wodnym, zwlaszcza przy budowie zapór wodnych i silowni, pionowych szwów roboczych bloków betonowych w budownictwie przemyslowym i komunikacyjnym, zwlasz¬ cza fundamentów i przyczólków, laczenia elementów prefabrykowanych, zwlaszcza murów oporowych, zbiornikówi osadników.The invention can be widely used in the construction industry to perform: vertical seams working concrete blocks in hydraulic engineering, especially in the construction of dams and engine rooms, vertical working seams of concrete blocks in industrial and communication construction, especially Connecting foundations and abutments, joining prefabricated elements, especially retaining walls, tanks and settlers.
Prac. Poligraf. UP PRL naklad 120+18 Cena 45 zlWash. Typographer. UP PRL, edition 120 + 18 Price PLN 45
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL18395775A PL100784B1 (en) | 1975-10-13 | 1975-10-13 | THE METHOD OF MAKING WORK SEAMS IN CONCRETE AND REINFORCED CONCRETE ENGINEERING STRUCTURES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL18395775A PL100784B1 (en) | 1975-10-13 | 1975-10-13 | THE METHOD OF MAKING WORK SEAMS IN CONCRETE AND REINFORCED CONCRETE ENGINEERING STRUCTURES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL100784B1 true PL100784B1 (en) | 1978-11-30 |
Family
ID=19973868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL18395775A PL100784B1 (en) | 1975-10-13 | 1975-10-13 | THE METHOD OF MAKING WORK SEAMS IN CONCRETE AND REINFORCED CONCRETE ENGINEERING STRUCTURES |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL100784B1 (en) |
-
1975
- 1975-10-13 PL PL18395775A patent/PL100784B1/en unknown
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