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A kind of anti-rolling type semi-rigid inner health water retention material and preparation method thereof

A technology of semi-rigid base layer and water-retaining material, which is applied in the field of road materials, can solve the problems of weakening the performance of semi-rigid base layer, internal curing material maintenance efficiency, premature release of internal moisture, low strength, etc., so as to enhance rigidity, ensure water demand, Chemically stable effect

Active Publication Date: 2022-06-17
CHANGAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing commercially available internal health-preserving materials form a gel state after absorbing liquid and swelling in the semi-rigid base layer, and the strength is not high. cracking, and premature release of internal moisture, which impairs the performance of the semi-rigid substrate and the curing efficiency of the internal curing material

Method used

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  • A kind of anti-rolling type semi-rigid inner health water retention material and preparation method thereof
  • A kind of anti-rolling type semi-rigid inner health water retention material and preparation method thereof

Examples

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preparation example Construction

[0047] A preparation method of a rolling-resistant semi-rigid base layer for internal health preservation and water retention, comprising the following steps:

[0048] Step 1: Weigh silica aerogel powder, glass powder, nano-silicon nitride by mass, and mix them evenly for later use;

[0049] Step 2: hydrolyze the silane coupling agent Si-602 under the action of acetic acid, add a certain amount of a mixture of absolute ethanol and deionized water, wherein m 无水乙醇和去离子水 : m 硅烷偶联剂Si-602 = 16:1, v 去离子水 :v 无水乙醇 =7:3, forming a silane coupling agent Si-602 hydrolyzate;

[0050] Step 3: Disperse the uniformly mixed silica aerogel powder, glass powder, and nano-silicon nitride in the hydrolyzed solution of the silane coupling agent Si-602 in Step 2, stir with argon, and then let stand Until the layers are separated, the supernatant liquid is poured out, and the remaining mixture is dried to obtain the modified silica aerogel powder, glass powder, and nano-silicon nitride, which is ...

Embodiment 1

[0062] This example provides a method for preparing an inner-health water-retaining material of a rolling-resistant semi-rigid base, which is composed of the following raw materials in terms of weight:

[0063] 10% silica aerogel powder, 3% glass powder, 5% nano silicon nitride, 2% silane coupling agent Si-602, 1% acetic acid, 27% methacrylic acid, 7% oil phase material, 3% Carrageenan, 16% polyaspartic acid, 20% succinimide, 0.1% 1,4 butanediol diacrylate, 0.2% azobisisobutyronitrile, 0.3% cerium ammonium nitrate, 5.6% sodium ethoxide .

[0064] Among them, in the oil phase material, Span 80 is 4% of the mass fraction of diethyl phthalate.

[0065] In particular, absolute ethanol, deionized water and isopropanol are used as solvents for preparing solutions or washing raw materials, and do not participate in chemical reactions.

[0066] The preparation method of the above-mentioned rolling-resistant semi-rigid base layer of the inner-healthy water-retaining material comprise...

Embodiment 2

[0078] This example provides a method for preparing an inner-health water-retaining material of a rolling-resistant semi-rigid base, which is composed of the following raw materials in terms of weight:

[0079] 10% silica aerogel powder, 3% glass powder, 8% nano silicon nitride, 3% silane coupling agent Si-602, 1.5% acetic acid, 25% methacrylic acid, 8% oil phase material, 3% Carrageenan, 14% polyaspartic acid, 18.82% succinimide, 0.18% 1,4 butanediol diacrylate, 0.2% azobisisobutyronitrile, 0.3% ceric ammonium nitrate, 5% sodium ethoxide .

[0080]In particular, the oil phase material is Span 80 and diethyl phthalate, and Span 80 is 6% of the mass fraction of diethyl phthalate.

[0081] In particular, absolute ethanol, deionized water and isopropanol are used as solvents to prepare solutions or wash raw materials without participating in chemical reactions.

[0082] The preparation method of the above-mentioned rolling-resistant semi-rigid base layer of the inner-healthy wa...

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Abstract

The invention discloses a rolling-resistant semi-rigid inner health water retention material and a preparation method thereof, which are prepared from the following raw materials: silicon dioxide airgel powder, glass powder, nano-silicon nitride, and silane coupling agent Si‑ 602, acetic acid, methacrylic acid, oil phase material, carrageenan, polyaspartic acid, succinimide, 1,4 butanediol diacrylate, azobisisobutyronitrile, cerium ammonium nitrate, sodium ethoxide ; The oil phase material is a mixture of diethyl phthalate and Span 80. The invention has rolling resistance and strong water-absorbing and water-retaining properties. On the basis of ensuring the efficiency of internal health preservation in the semi-rigid base layer, the internal health gel has a complete structure during the rolling process, and the gel will not break phenomenon, and then control its drying shrinkage and early temperature shrinkage, reduce the crack expansion inside the semi-rigid base, improve the service life of the mechanical properties of the semi-rigid base asphalt pavement, and reduce maintenance costs.

Description

technical field [0001] The invention belongs to the field of road materials, relates to a semi-rigid base layer maintenance material, and in particular relates to a rolling-resistant semi-rigid base layer inner health-preserving and water-retaining material and a preparation method thereof. Background technique [0002] The semi-rigid base has high stiffness and strong load diffusion capacity, and is widely used in high-grade highways in my country. The semi-rigid base is a mixture formed by mixing an appropriate amount of cement, lime, fly ash or other industrial waste residues and other binders with water. After paving, compacting and curing, the pavement base is formed. The main advantages of the semi-rigid base include: high stiffness, so the flexural tensile stress value at the bottom of the asphalt surface layer is usually less than 0.17Mpa, so it has a strong ability to resist driving fatigue damage, and it can even be considered that the asphalt surface layer will no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/42C08F283/04C08F251/00C08F220/06C08F222/14C04B103/46
CPCC04B40/0046C08F283/04C08F251/00C04B2103/465C08F220/06C08F222/102C04B14/064C04B14/22C04B14/328C04B24/42C04B24/04C04B24/045C04B24/085C04B24/38C04B24/287C04B24/121C04B24/06C04B24/129C04B22/085C04B24/026
Inventor 何锐王柯谈亚文郑睢宁鲁孝松郑欣欣徐紫祎徐鹏
Owner CHANGAN UNIV
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