SU662534A1 - Method of heat and moisture treatment of concrete and reinforced concrete articles - Google Patents
Method of heat and moisture treatment of concrete and reinforced concrete articlesInfo
- Publication number
- SU662534A1 SU662534A1 SU742045623A SU2045623A SU662534A1 SU 662534 A1 SU662534 A1 SU 662534A1 SU 742045623 A SU742045623 A SU 742045623A SU 2045623 A SU2045623 A SU 2045623A SU 662534 A1 SU662534 A1 SU 662534A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- concrete
- heat
- moisture treatment
- articles
- reinforced concrete
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/0277—Hardening promoted by using additional water, e.g. by spraying water on the green concrete element
- C04B40/029—Hardening promoted by using additional water, e.g. by spraying water on the green concrete element using an aqueous solution or dispersion
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
(54) СПОСОБ ТЕПЛОВЛАЖНОСТНОЙ ОБРАБОТКИ БЕТОННЫХ И ЖЕЛЕЗОБЕТОННЫХ ИЗДЕЛИЙ(54) METHOD OF HEAT-WATER TREATMENT OF CONCRETE AND CONCRETE PRODUCTS
Изобретение относитс к области промышленности строительных материапов и может быть использовано на заводйх железобетонных изделий и конструкций. Известен способ тепловлажностной обработки бетонных и железобетонных изделий и конструкций , имеющих открытые поверхности, с предварительной изол цией последних от окружающей среды 1. Известный способ предусматривает формование бетонной смеси и дальнейшее ее прогревание. Посjje выдержки, например, в течение 1-2 ч до получени некоторой критической прочности бетона гори зонтальную поверхность издели заливайт слоем воды толщиной 1-5 см с добавками меньшей плотности , чем вода, и нераствор ющимис в ней, после чего осуи1,ествл ют термообработку. Такой способ не дает возможности обрабатывать вертикальные поверхности и распалубленные горизонтальные поверхности. Кроме того, врем обработки увеличиваетс за счет необходимости предварительной вьздержки в течение 1-2 ч. . Наиболее близким к описываемому изобретению по технической сущности и достигаемому результату вл етс способ тепловлажностной обработки 6eTomibiX и железобетонных изделий, включаюш;ий защиту Поверхности издели водным раствором сульфата аммони и поспетующш прогрев его 2. . Этот способ также не позвол ет сократить врем обработки, поскольку способствует лишь повышению сульфатостойкости бетона и не защищает его от деструктивных влений в процессе обогревани . Цель изобретени - ускорение подъема температуры прогрева.. Достигаетс зто тем, что в способе тепловлаж-. ностной обработки бетонных и железобетонных изделий, включающем защиту поверхности издели и последующий прогрев его, защиту осуществл ют нанесением 2-10 -ного водного раствора нитрит-нитрат-хлорида йальцй (ННХК). Способ осуществл етс следующим образом. Издели формуют из бетонов следующих составов: 123 Цемент250405585 Песок767610335The invention relates to the field of building materials industry and can be used for factory concrete products and structures. There is a method of heat and moisture treatment of concrete and reinforced concrete products and structures with open surfaces, with preliminary isolation of the latter from the environment 1. The known method involves the molding of the concrete mix and its further heating. After exposure, for example, for 1-2 hours to obtain a certain critical strength of concrete, the horizontal surface of the product should be filled with a layer of water 1-5 cm thick with additives less dense than water and not dissolved in it, and then the heat can be heat treated. . This method makes it impossible to handle vertical surfaces and flattened horizontal surfaces. In addition, the processing time is increased due to the need for pre-exposure within 1-2 hours. The closest to the described invention by its technical essence and the achieved result is the method of heat-moisture treatment of 6eTomibiX and reinforced concrete products, including protection of the Surface of the product with an aqueous solution of ammonium sulfate and warming it up 2.. This method also does not allow to shorten the processing time, since it only contributes to improving the sulphate resistance of concrete and does not protect it from destructive effects during the heating process. The purpose of the invention is to accelerate the rise of the heating temperature. This is achieved by the fact that in the method of heat and hum. The final treatment of concrete and reinforced concrete products, including the protection of the surface of the product and its subsequent heating, is carried out by applying a 2-10% aqueous solution of nitrite-nitrate-chloride (NNHK). The method is carried out as follows. The products are molded from concrete of the following compositions: 123 Cement250405585 Sand767610335
Щебень12I5i11901205 ,Crushed stone12I5i11901205,
Вода1851950230.Water 1851950230.
Поверхности отформованных изделий обрабатывают 5-ли и 10%-ным растворами нитрит-нитрат-хлорида кальци . Затем издели выдерживают в течение 2 и 3,5 ч при и подвергаютThe surfaces of the molded products are treated with 5-li and 10% calcium nitrite-nitrate-chloride solutions. Then the product is kept for 2 and 3.5 hours at and subjected to
тепловлажностной обработке по жесткому режиму (1,5+4,5+2) при90С.heat and moisture treatment in hard mode (1.5 + 4.5 + 2) at 90С.
После тепловлажностной обработки определ ют степень трещинообразовани поверхностного сло , характер искривлени граней и прочностные характеристики изделий (см. таблицу)After the heat-moisture treatment, the degree of cracking of the surface layer, the nature of the curvature of the faces and the strength characteristics of the products are determined (see table).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU742045623A SU662534A1 (en) | 1974-07-15 | 1974-07-15 | Method of heat and moisture treatment of concrete and reinforced concrete articles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU742045623A SU662534A1 (en) | 1974-07-15 | 1974-07-15 | Method of heat and moisture treatment of concrete and reinforced concrete articles |
Publications (1)
Publication Number | Publication Date |
---|---|
SU662534A1 true SU662534A1 (en) | 1979-05-19 |
Family
ID=20591518
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU742045623A SU662534A1 (en) | 1974-07-15 | 1974-07-15 | Method of heat and moisture treatment of concrete and reinforced concrete articles |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU662534A1 (en) |
-
1974
- 1974-07-15 SU SU742045623A patent/SU662534A1/en active
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