Lightweight high-strength concrete applicable to pumping construction and construction method

A high-strength concrete and construction method technology, which is applied in the processing of building materials, construction, building construction, etc., can solve the problems of pump blockage and concrete work performance reduction, and achieve the effect of avoiding pump blockage

Active Publication Date: 2017-05-31
TIANYUAN CONSTR GROUP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the following problems exist in the pumping of light aggregate concrete: First, due to the water in the concrete being compressed into the light aggregate under the pumping pressure, the work performance of the concrete is reduced, and the pump is prone to blockage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The raw material weight ratio of the lightweight high-strength concrete suitable for pumping construction in this embodiment is as follows:

[0029] Ordinary Portland cement: 28%;

[0030] Fly ash: 6%;

[0031] Slag: 5%;

[0032] Ceramsite: 21%, particle size greater than 5mm;

[0033] Ceramic sand: 27%, particle size less than 5mm;

[0034] Cellulose ether: 0.5%;

[0035] Water reducer: 0.5%;

[0036] Water: 12%.

[0037] The construction method of lightweight high-strength concrete suitable for pumping construction includes the following steps:

[0038] Step 1, pretreat the ceramsite and ceramsite; put the ceramsite and ceramsite in a high-pressure water tank and stir to make the ceramsite and ceramsite fully absorb water, and reduce the water absorption of ceramsite and ceramsite by controlling the stirring time The amount is controlled between 5wt% and 6wt%; the ceramsite and ceramsite after water absorption treatment are put into the cellulose ether solution...

Embodiment 2

[0046] The raw material weight ratio of the lightweight high-strength concrete suitable for pumping construction in this embodiment is as follows:

[0047] Ordinary Portland cement: 29%;

[0048] Fly ash: 5%;

[0049] Slag: 5%;

[0050] Ceramsite: 21%;

[0051] Pottery sand: 25%;

[0052] Cellulose ether: 0.6%;

[0053] Water reducer: 0.4%;

[0054] Water: 14%.

[0055]The construction method of lightweight high-strength concrete suitable for pumping construction includes the following steps: pretreatment of ceramsite and ceramsite; putting ceramsite and ceramsite into a high-pressure water tank and stirring, so that ceramsite and ceramsite are fully absorbed moisture, by controlling the stirring time to control the water absorption of ceramsite and ceramsite between 5wt% and 6wt%; put the ceramsite and ceramsite after water absorption treatment into the cellulose ether solution and stir to make ceramsite and ceramsite The surface is evenly covered with a layer of cellu...

Embodiment 3

[0057] The raw material weight ratio of the lightweight high-strength concrete suitable for pumping construction in this embodiment is as follows:

[0058] Ordinary Portland cement: 30%;

[0059] Fly ash: 5%;

[0060] Slag: 4%;

[0061] Ceramsite: 22%;

[0062] Pottery sand: 28%;

[0063] Cellulose ether: 0.4%;

[0064] Water reducer: 0.6%;

[0065] Water: 10%.

[0066] The construction method of lightweight high-strength concrete suitable for pumping construction includes the following steps: pretreatment of ceramsite and ceramsite; putting ceramsite and ceramsite into a high-pressure water tank and stirring, so that ceramsite and ceramsite are fully absorbed moisture, by controlling the stirring time to control the water absorption of ceramsite and ceramsite between 5wt% and 6wt%; put the ceramsite and ceramsite after water absorption treatment into the cellulose ether solution and stir to make ceramsite and ceramsite The surface is evenly covered with a layer of cell...

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Abstract

The invention discloses a lightweight high-strength concrete applicable to pumping construction and a construction method. The lightweight high-strength concrete is prepared from, by weight, 25%-30% of ordinary Portland cement, 4%-7% of coal ash, 4%-8% of slag, 19%-23% of ceramsite, 26%-32% of pottery sand, 0.3%-0.7% of cellulose ether, 0.2%-0.6% of a water reducing agent and 8%-14% of water. The ceramsite and the pottery sand are stirred in a high-pressure water tank, and water absorption quantity of the ceramsite and the pottery sand is controlled in a range of 5wt%-6wt%; then surfaces of the ceramsite and the pottery sand are uniformly coated with cellulose ether protective films. Since the ceramsite and the pottery sand are already filled with water under the high-pressure condition and coated with the cellulose ether protective films, concrete service performance degradation caused by compression of concrete moisture into lightweight aggregates can be avoided during pumping of the lightweight high-strength concrete, and the problem of pump blockage is avoided as well.

Description

technical field [0001] The invention relates to lightweight high-strength concrete suitable for pumping construction, and also relates to a construction method of lightweight high-strength concrete suitable for pumping construction. Background technique [0002] Concrete, as a traditional building material, has been greatly improved in the history of more than 100 years of human beings actively designing and using its performance. However, with the development of social economy, engineering construction has higher and higher requirements on concrete performance. If some existing problems of concrete cannot be properly and effectively solved, it will be difficult to undertake its due mission and its use will not be greatly expanded. [0003] Compared with steel, ordinary density concrete has a very low specific strength per unit weight, which obviously cannot meet the needs of future super high-rise and super long-span structures. There are generally two ways to solve this p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B20/10E04G21/02
CPCC04B20/1048C04B28/04E04G21/02C04B18/08C04B18/141C04B18/023C04B24/383C04B2103/302
Inventor 刘军郭玉顺安百平赵发源景帅帅
Owner TIANYUAN CONSTR GROUP
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