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Preceding material for pumping

a technology of pre-mixed materials and pre-mixed concrete, which is applied in the direction of climate sustainability, solid waste management, sustainable waste treatment, etc., can solve the problems of clogging, inevitable and complicated mixing of water and cement, and the delivery end of the pumping, so as to achieve effective separation from the pumped ready-mixed concrete, prolong the pumping distance, and utilize waste effectively

Pending Publication Date: 2020-10-29
TAKE CITE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention relates to a material for pumping that can extend the pumping distance and effectively utilize waste. The material includes a mixture of cellulose fiber and calcium carbonate. Additionally, the material can be separated from the pumped concrete, and it is color pigmented to avoid mixing. The use of erythorobic acid prevents deterioration in the compressive strength of concrete. The technical effects of this invention include improved pumping efficiency and waste management.

Problems solved by technology

This situation has a risk of clogging at a delivery end of pumping, due to intertangling of the coarse aggregate.
However, when the cement paste is used as the preceding material for pumping, a large volume (for example, about 0.5 m3) of cement paste is required, and furthermore, there is also a problem of inevitable and complicated work of mixing of water and cement.
Moreover, when the cement paste is used as the preceding material for pumping, there is also a problem that the preceding material may be mixed with the ready-mixed concrete, which causes deterioration of compressive strength after curing of the ready-mixed concrete.
In addition, there is also a problem that the large volume of cement paste, which has been used as the preceding material for pumping, will directly become the industrial waste.

Method used

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Examples

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Embodiment Construction

[0034]Now, an embodiment of the present invention will be explained with reference to FIG. 1 to FIG. 8. FIG. 1 is a view showing a state that ready-mixed concrete is pumped to and casted in a destined place by a ready-mixed concrete pumping vehicle 1, wherein a squeeze-type pump 5 and a hopper 7 are installed on a vehicle main body 3 of the ready-mixed concrete pumping vehicle 1. Moreover, an extendible boom 9 is installed on the vehicle main body 3. The boom 9 comprises a plurality of arms 11, etc.

[0035]A piping 13 is connected to the pump 5, and the piping 13 comprises a plurality of steel pipes, of which head has a flexible synthetic rubber hose connected thereto, so as to be extended to a destined place along the boom 9.

[0036]For reference, depending on the type of site, the steel pipes may further be extended beyond the head of the boom 9, by connecting additional steel pipes.

[0037]Ready-mixed concrete 15 (as illustrated in FIG. 2) is fed into the hopper 7, from a ready-mixed c...

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Abstract

The purpose of the present invention is to provide a preceding material for pumping, a feeding of a very small amount thereof being capable of extending the pumping distance. The preceding material for pumping includes an added cellulose nanofiber and having calcium carbonate as a main component. The present invention enables a thin lubricant layer of a uniform thickness to be formed inside a pipe even when the pipe has a slightly roughened inner surface due to, for example, residues of solidified cement paste or the like, allowing the pumping distance to be extended. Thus, the present invention is suitable, for example, for casting ready-mixed concrete at various construction sites.

Description

TECHNICAL FIELD[0001]The present invention relates to a preceding material for pumping, which is used during pumping and casting of ready-mixed concrete by using, for example, a ready-mixed concrete pumping vehicle. More particularly, the present invention relates to the preceding material for pumping, in which the pumping distance can be extended by using cellulose nanofiber (CNF).BACKGROUND ART[0002]Ready-mixed concrete pumping vehicles are used at various construction sites, as a means for pumping and casting of ready-mixed concrete into a predetermined place. The ready-mixed concrete pumping vehicle is provided with a hopper, a pump and a boom, and a piping is connected to an outlet of the pump. The piping is laid along the boom, and elongating toward a predetermined place into which the ready-mixed concrete is pumped. A ready-mixed concrete mixer vehicle feeds the ready-mixed concrete into the hopper, and the ready-mixed concrete is pumped to and casted in the predetermined pla...

Claims

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Application Information

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IPC IPC(8): C04B16/02E04G21/04B28C7/16C04B18/24C04B12/00
CPCE04G21/04C04B16/02B28C7/16C04B18/243C04B2111/00344C04B14/26C04B12/00Y02W30/91C04B30/00C04B18/24C04B18/16C04B14/28C04B2111/00146C04B24/06C04B2103/54C04B20/006C04B20/02C04B20/002
Inventor TAKEDA, MASANARI
Owner TAKE CITE CO LTD
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