The method of supplying the concrete mixture into the concrete blocks solid monolithic construction

 

The invention relates to the field of hydraulic engineering construction and can be used when pouring massive concrete structures. The technical result is to increase the intensity and efficiency of concrete work when pouring massive concrete structures. The method of supplying the concrete mixture into the concrete blocks solid monolithic construction is carried out by feeding the concrete mix through the transfer bunker with betonovoznoy pipe, and the subsequent delivery of concrete mix vnutriplitnyi the concrete trucks. Next, the concrete mixture is fed to the additional bottom reloading the hopper, provided with a shutter and maintained in a partially filled condition, to prevent stratification of flowing concrete mixture. Discharging bottom loading hopper produce in vnutriplitnyi concrete trucks dosed portions. 1 C.p. f-crystals, 1 Il.

The invention relates to the field of hydraulic engineering construction and can be used when pouring massive concrete structures.

Known methods of concrete mix delivery in blocks of concrete hydraulic structures on the in hydraulic engineering. -M.-L.: Energy, 1967, S. 121 - 129).

The disadvantages of these methods are limited coverage, low flow rate of the concrete mix into blocks and significant segregation of the coarse aggregate, which is separated from the concrete. Therefore, these methods are not used as main and as an extra for transportation and supply of concrete mix in blocks.

Closest to the proposed invention is a method of supplying concrete mixture into the concrete blocks used in the construction of concrete dams-layer blocks - when using "Toktogul" method of concreting. Accordingly, portions of the concrete mix, imported to the structure under construction from the concrete plant by dump trucks, entered into the transfer hopper shutter, which was then unloaded in vnutriplitnyi concrete trucks delivering it directly to the place of laying in the block (L. A. Tolkachev, C. B. Sudakov. Toktogul method of concreting massive structures. - M.: Energy, 1973, S. 11, 12).

The disadvantage of the prototype is the need to limit the drop height of the concrete mix 4 - 6 m, due to its bundle, the degree of which is greater, the greater the grain size of the coarse aggregate in the mixture, and t is the rate of concrete work.

The proposed method does not have these disadvantages and allows you to move the concrete mix according to the height at distances up to several tens of meters almost without stratification.

The invention solves the problem of increasing the intensity and effectiveness of concrete work when pouring massive concrete structures layer-by-layer method - a single layer of blocks.

To achieve the mentioned technical result in the proposed method, the supply of concrete mixture into the concrete blocks is carried out through the transfer bunker with betonovoznoy pipe, from which the concrete mixture is fed to the additional bottom reloading the hopper, and thence in vnutriplitnyi the concrete with subsequent delivery to the places of its installation. Bottom reloading the hopper is equipped with a shutter and is constantly maintained in a partially filled condition, to prevent stratification of flowing concrete mixture. Unloading of the hopper produce in vnutriplitnyi concrete trucks dosed portions.

In addition, the claimed technical solution has optional features that characterize its special cases, namely: before applying the concrete mix, with a maximum grain size of the grains of aggregates than 40 mm, additional the supply hopper bottom sequentially move to the desired height up shortening respectively betonovoznoy pipe.

The hallmark of the proposed method is that in the process of concreting, until its end, when loading each vnutribruchnogo of additional concrete bottom reloading the hopper is unloaded, but not all, metered portions, so there remains a volume of concrete mixture, is sufficient for this remaining concrete mix was toplevels coming on batanovtsi pipe to another portion of the concrete mixture and prevents its separation.

The proposed method is illustrated by a drawing, which shows a diagram of a concrete mix delivery.

The diagram shows the flow of the concrete mix from the dump track 1, coming into the transfer hopper 2, batanovtsi pipe 3, an additional bottom reloading the hopper 4 located on the support structure 5. Further unloading of the concrete mixture produced during vnutriplitnyi the concrete 6.

The method is as follows.

The supply of concrete mixture into the concrete blocks solid monolithic structure is made through the system of two bins: loading hopper 1 and additional bottom loading hopper 4, connected b the mix is unloaded dosed portions in vnutriplitnyi the concrete 6, deliver it to the location of installation.

Reloading the hopper 2 has a volume of not less than the volume of the portions of the concrete mix delivered to him from the concrete plant. Additional bottom reloading the hopper 4 has a volume of not less than two of the supplied portions of the concrete mix. Unloading from it is controlled by the operator, managing shutter.

Betonovoda pipe 3, through which the concrete of the loading hopper 2 is supplied in additional bottom reloading the hopper 4, must have a diameter not less than 4 times the size limit the size of grains of aggregates in the concrete mix should be directed to the center of the hopper 4.

As building massive concrete structures or facilities additional bottom reloading the hopper 4 is sequentially moved to the desired height up, shortening, respectively betonovoznoy pipe 3.

The proposed method of supplying concrete mixture into the concrete blocks solid monolithic construction is simple, easily implemented, allows the casting with high intensity and can be widely used in the construction of concrete dams, especially in mountainous conditions, and other concrete structures - retaining walls, massive FA

1. The method of supplying the concrete mixture into the concrete blocks massive monolithic structures including concrete mix feeding through to a loading hopper having betonovoznoy pipe, to discharge on vnutriplitnyi concrete trucks with subsequent delivery, characterized in that the concrete mix batanovtsi pipe served in the supplied bolt additional lower transfer bunker, constantly supported in partially filled with concrete condition to prevent delamination of the concrete mixture with vtaplivaniem it in the concrete mix, partially filling the lower transfer bunker and unloading produce dosed portions, moreover, before applying the concrete mix with a maximum grain size of the grains of the aggregate for more than 40 mm lower transfer bunker load portion of fine-grained concrete mix.

2. The method of supplying the concrete mixture into the concrete blocks massive monolithic structures under item 1, characterized in that as the building of constructions of the lower hopper sequentially move to the correct height up, thus shortening betonovoznoy pipe.

 

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