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Sealing grout for water pipe joints and manufacturing method thereof

A water pipe and mortar technology, applied in the field of pouring mortar, can solve the problems of polluting the internal water body, poor corrosion resistance, and insufficient durability, and achieve the effects of protecting the environment and reducing the amount of cement used

Active Publication Date: 2011-12-07
南京瑞迪建设科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are problems in the construction: it is impossible to use the method of manually plastering the mortar to compact the butt joints, because the construction labor intensity is high, which affects the progress of the project; at the same time, it is difficult to construct the bottom of the pipeline, and it cannot be guaranteed that the bottom can be completely compacted. Therefore, the method of manually plastering mortar is not feasible; and it cannot be compacted by vibrating, especially for the mortar on both sides of the pipe, there is no way for the vibrating rod to achieve
Therefore, there will be many bleeding channels inside the mortar, which will seriously affect the performance of the mortar.
[0009] (2) Insufficient crack resistance of mortar
From another point of view, the mortar has poor sealing performance on the joints of the water delivery pipe, and the water inside the water delivery pipe can leak to the outside through the cracks. Correspondingly, the external medium may also invade the inside of the mortar through the cracks or the external water body may pollute the internal water body. , and the intruded medium may affect the performance of the steel cylinder inside the water pipe
[0011] (3) The mortar has poor corrosion resistance to the steel cylinder inside the water pipe
Therefore, the durability of the grouting mortar currently used is obviously insufficient and does not meet the design period of the project.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] The mortar formulation of the present invention was prepared from the ingredients listed in Table 1.

[0066] raw material:

[0067] The cement used is 52.5 ordinary Portland cement with the trade name "Conch brand";

[0068] The ground mineral admixture used is S105 level ground slag and I level fly ash;

[0069] The expansion component used is UEA general expansion agent, produced by Nanjing Ruidi High-tech Company;

[0070] The sand used is ordinary river sand, the fineness modulus is 2.85, and the gradation is in Zone II;

[0071] The internal moisturizing material used is water-absorbing resin particles with a particle size of 40 mesh;

[0072] The fibers used are basalt fibers with a single filament length of 19mm, produced by Sichuan Huashen Building Materials Co., Ltd.;

[0073] The water reducer used is a naphthalene-based high-efficiency water reducer;

[0074] The air-entraining agent used is triterpene saponin air-entraining agent;

[0075] The thicken...

Embodiment 2

[0082] This example shows that it can exhibit excellent fluidity and crack resistance, and can exhibit good frost resistance under the condition that the air-entraining agent can introduce certain tiny air bubbles.

[0083] The mortar formulation of the present invention was prepared from the ingredients listed in Table 2.

[0084] raw material:

[0085] The cement used is 42.5 Portland cement with the trade name "Conch Brand";

[0086] The ground mineral admixture used is S95 level ground slag and I level fly ash;

[0087] The expansion component used is UEA general expansion agent;

[0088] The sand used is ordinary river sand with a fineness modulus of 2.70 and a gradation in zone II;

[0089] The internal moisturizing material used is pottery sand, which is mixed with clay pottery sand and fly ash pottery sand in a ratio of 1:1;

[0090] The fibers used are polypropylene eye fibers with a length of 15mm;

[0091] The water reducer used is polycarboxylate high-efficien...

Embodiment 3

[0100] This example shows that by using pottery sand to completely replace ordinary river sand as fine aggregate, a mortar with high fluidity, high crack resistance and high durability can also be obtained by virtue of its own performance, which can fully meet the actual requirements of the project.

[0101] The mortar formulation of the present invention was prepared from the ingredients listed in Table 3.

[0102] raw material:

[0103] The cement used is 52.5 grade ordinary Portland cement with the trade name "Conch brand";

[0104] The ground mineral admixture used is S105 level ground slag and I level fly ash;

[0105] The expansion component used is UEA-N type expansion agent;

[0106] The internal moisturizing material used is pottery sand, which is a mixture of clay pottery sand and fly ash pottery sand in a ratio of 1:1; the particle size of the water-absorbing resin is 325 mesh;

[0107] The fibers used are basalt fibers with a length of 19 mm, produced by Sichuan...

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Abstract

The present invention discloses perfusion sand pulp that is used for sealing the connector of a conduit pipe, which comprises cement, sand and water, and is characterized in that the ingredients also comprises inner moisture-preservation material, fined mineral additive, fiber flexibility-improved material and water-reducing agent in weight ratio: 100 portions of cement, 0 to 550 portions of sand, 85 to 105 portions of water, 0.2 to 250 portions of inner moisture-preservation material, 10 to 130 portions of fined mineral additive, 0.15 to 0.45 portions of fiber flexibility-improved material, and 0.20 to 2.3 portions of water-reducing agent:. The perfusion sand pulp saves the cement and reduces the environmental pollution; with the self tightness, the connector of the conduit pipe can be filled and sealed with the self-gravity flowing of the sand pulp without vibro. The perfusion sand pulp has higher anti-fracture performance. Being valuated with the test methods such as the circular ring method and the flat-plate method, the anti-fracture performance of the perfusion sand pulp can be improved by one to two times; the perfusion sand pulp has higher anti-invasion of the chloridion, and improves the durance of the sand pulp and the corrosion durance of the steel copper or the steel bar inside the conduit pipe.

Description

technical field [0001] The invention relates to a kind of pouring mortar for water pipe joints that needs to be sealed. More specifically, it relates to a kind of pouring mortar with high fluidity, and the mortar can have high filling performance without conventional vibration and compaction. Compactness, so that the joints of water pipes can be completely sealed, and it is a pouring mortar with high crack resistance and high durability. Background technique [0002] In general, concrete pipes are usually used as water delivery pipes in water supply projects or water diversion projects between different regions, but at the joints of water delivery pipes, especially at the butt joints of water delivery pipes with large diameters and thick walls, there will be A narrow and deep groove is left, which is called a butt seam. In order to connect the entire pipeline as a whole, people must seal the groove; after sealing, the water inside the pipeline will not flow out, and the ext...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B14/06C04B18/12
CPCY02W30/91
Inventor 丁建彤赵伟韦华陈波
Owner 南京瑞迪建设科技有限公司
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