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A high-toughness fiber mortar acoustic measuring tube and its preparation method

A fiber mortar, high-toughness technology, used in basic structure engineering, basic structure testing, construction, etc., can solve the problem of poor crack resistance, tensile and compressive performance, manufacturers can not produce large-scale, can not meet the pile foundation detection requirements and other issues, to achieve the effect of not easily producing cracks, preventing the intrusion of external moisture, and reducing the probability of water leakage

Active Publication Date: 2021-06-22
安徽昌宁新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. The corrosion resistance is relatively poor, which is not conducive to transportation and storage;
[0006] 2. The thickness required by the construction unit is inconsistent, it needs to be produced according to the order, the required processing cycle is long, and the manufacturer cannot produce on a large scale;
[0007] 3. The thick-walled acoustic tube is heavy, labor-intensive and time-consuming. The thick-walled steel acoustic tube is welded on site, and the joint connection is greatly affected by human factors, so the quality cannot be guaranteed;
[0008] 4. Thin-walled acoustic tubes and thick-walled steel tubes are constructed according to the design requirements, and the cost is high;
[0009] 5. Especially in the case of harsh geological conditions and complex stress conditions, the crack resistance, tensile and compressive properties are relatively poor, which cannot meet the requirements of pile foundation testing

Method used

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  • A high-toughness fiber mortar acoustic measuring tube and its preparation method
  • A high-toughness fiber mortar acoustic measuring tube and its preparation method

Examples

Experimental program
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preparation example Construction

[0050] The present invention also provides a method for preparing a high-toughness fiber mortar acoustic tube, comprising the following steps:

[0051] Step 1, making a high-toughness fiber mortar pipe mold;

[0052] Select a seamless welded pipe or high-frequency welded pipe with a length of 12m, an outer diameter of 55-80mm, and a wall thickness of 2.5mm-3.0mm, and divide it into two semicircular cross-section pipes by linear cutting, which are respectively used as the outer mold of the high-toughness fiber mortar pipe 1 The upper mold and the lower mold are welded on the slurry inlet end of the upper mold, and the slurry outlet pipe is welded on the outlet end of the lower mold. Valves are installed on the slurry inlet pipe and the slurry outlet pipe. One is on the flat plate, and the bolt connection device is installed on the two flat plates.

[0053] Before the outer mold is closed, put the air bag into the inner mold, and set plastic positioning ribs on the air bag ever...

Embodiment 1

[0062] Example 1: Ordinary Portland cement, water, refined sand, fly ash, silica fume, metakaolin, redispersible latex powder, fiber, hydroxypropyl methylcellulose, and polycarboxylate superplasticizer are mixed The high-toughness fiber mortar, its weight percentage according to the order of the aforementioned raw materials are: 20% ~ 35%, 13% ~ 20%, 20% ~ 35%, 15% ~ 25%, 0.5% ~ 1.5%, 1.5% ~3%, 1.5%~3%, 1.5%~7%, 0.03%~0.15%, 0.1%~0.35%, wherein the fiber is one or a combination of two or more of carbon fiber, polyvinyl alcohol fiber, basalt fiber .

Embodiment 2

[0063] Embodiment 2: The material of the high-toughness fiber mortar pipe is ordinary Portland cement, water, refined sand, fly ash, metakaolin, redispersible latex powder, fiber, hydroxypropyl methylcellulose, polycarboxylate The high-toughness fiber mortar mixed with acid water reducer, its weight percentages are: 20%-35%, 13%-20%, 20%-35%, 15%-25%, 1.5%~3%, 1.5%~3%, 1.5%~7%, 0.03%~0.15%, 0.1%~0.35%, wherein the fiber is one or more of carbon fiber, polyvinyl alcohol fiber and basalt fiber The combination.

[0064] In the above two embodiments, the particle size of the refined sand is 0.01mm-0.2mm. Specifically, the material is sieved according to the natural gradation between 0.01mm and 0.2mm.

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Abstract

The invention discloses a high-toughness fiber mortar acoustic measuring tube and a preparation method thereof, comprising a high-toughness fiber mortar tube, two inner sleeves and an outer sleeve. The two inner sleeves are set on the two ends of the high-toughness fiber mortar tube respectively, and the outer sleeve is set on one end of the high-toughness fiber mortar tube. The material of the high-toughness fiber mortar pipe is a high-toughness fiber mortar mixed with cement, fiber, quartz sand, industrial waste, water reducing agent and additives. The present invention adopts the high-toughness fiber mortar tube as the main part of the acoustic tube, so that it has high toughness, high strength, high crack resistance, high tensile resistance and high compression resistance, and fully meets the stress requirements of the acoustic tube, especially It improves the quality assurance of pile foundation detection under harsh geological conditions. In addition, the outer casing is installed in the factory, and then the portable intelligent electro-hydraulic pliers are used to squeeze the connection of the two high-toughness fiber mortar pipes at the construction site, which ensures the quality of the joint connection and reduces the probability of water leakage.

Description

technical field [0001] The invention relates to the field of foundation pile detection in the field of construction engineering, in particular to an acoustic measuring tube for high-toughness fiber mortar. Background technique [0002] In the construction of building foundations, for the detection of pile foundations, the code requires the use of ultrasonic transmission method to detect the quality of pile foundations. The acoustic tube is a channel pre-buried in the cast-in-place pile, which is used for ultrasonic testing to facilitate the probe of the equipment to enter the interior of the pile body through the channel. [0003] At present, the acoustic tubes used for foundation pile detection are generally designed with thin-walled steel tubes with a wall thickness of 1.8 mm and thick-walled acoustic tubes with a wall thickness of 3.0 mm. At that time, the suppliers of acoustic tubes all adopted the method of quoting low prices and reducing the wall thickness to compete....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D33/00C04B28/04C04B111/56
CPCC04B28/04C04B2111/56E02D33/00C04B14/06C04B18/08C04B18/146C04B14/106C04B2103/0057C04B24/383C04B2103/302C04B14/386C04B16/0641C04B14/46
Inventor 董寅都昌林
Owner 安徽昌宁新材料有限公司