Preparation method of modified mixed basalt fiber doped asphalt

A basalt fiber and mixed fiber technology, applied in building components, building insulation materials, buildings, etc., can solve the problems of poor asphalt compatibility, uneven segregation, environmental and human hazards, etc., and achieve superior tensile strength. Strength, saving manpower and material resources, less environmental pollution

Inactive Publication Date: 2019-02-12
罗永山
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Chinese patent (CN201710606406.8) graded basalt fiber asphalt mixture with high fatigue resistance, obtained asphalt with excellent performance, but directly using basalt fiber, because the surface of basalt fiber is smooth and the fiber surface is chemically inert, it can be combined with SBS polymer compound The compatibility of the modified asphalt is not very good, which may cause uneven layering and segregation
Chinese patent (CN201610462508.2) is a new type of basalt fiber asphalt mixture modifier, which uses a variety of reagents to modify basalt fiber to obtain asphalt with good road surface rutting resistance, fatigue cracking resistance and long service life. Too many chemical reagents, especially at high temperature, are easy to cause harm to the environment and human body

Method used

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  • Preparation method of modified mixed basalt fiber doped asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Soak 2.6 parts by mass of 10-20mm basalt fibers and 0.7 parts by mass of ceramic fibers of 15-30mm in excess sodium hydroxide for 30 minutes, drain the sodium hydroxide, and immediately add 0.7 parts by mass of hydroxyethyl Sodium sulfonate and 0.2 parts by mass of dilauroyl peroxide were stirred at 90°C and 1.5Mpa for 45min at 600r / min to obtain a modified mixed fiber;

[0027] (2) Heat 100 parts by mass of base asphalt to 165°C, add 2 parts by mass of styrene-butadiene rubber, 5 parts by mass of SBS, modified mixed fiber, 1 part by mass of kaolin, 3 parts by mass of Diatomite, 7 parts by mass of polydimethylsiloxane, 2 parts by mass of stearic acid, and 0.9 parts by mass of benzoin were stirred at 1000 r / min for 18 minutes to obtain a modified mixed basalt fiber pitch.

Embodiment 2

[0029] (1) Soak 1.7 parts by mass of 10-20mm basalt fibers and 1.1 parts by mass of ceramic fibers of 15-30mm in excess sodium hydroxide for 35 minutes, drain the sodium hydroxide, and immediately add 1.5 parts by mass of hydroxyethyl Sodium sulfonate and 0.4 parts by mass of dilauroyl peroxide were stirred at 95°C and 1.2Mpa for 60min at 800r / min to obtain a modified mixed fiber;

[0030] (2) Heat 100 parts by mass of base asphalt to 175°C, add 1 part by mass of styrene-butadiene rubber, 5.5 parts by mass of SBS, modified mixed fiber, 2 parts by mass of bentonite, 4 parts by mass of Limestone and 2 parts by mass of montmorillonite, 8 parts by mass of polydimethylsiloxane, 1 part by mass of stearic acid, and 1.1 parts by mass of benzoin dimethyl ether were stirred at 1100r / min for 22 min to obtain improved Sexual mixed basalt fiber asphalt.

Embodiment 3

[0032] (1) Soak 3.3 parts by mass of 10-20mm basalt fibers and 1.57 parts by mass of ceramic fibers of 15-30mm in excess sodium hydroxide for 25 minutes, drain the sodium hydroxide, and immediately add 1.0 parts by mass of hydroxyethyl Sodium sulfonate and 0.3 parts by mass of dilauroyl peroxide were stirred at 80°C and 1Mpa for 55min at 500r / min to obtain a modified mixed fiber;

[0033] (2) Heat 100 parts by mass of base asphalt to 170°C, add 1 part by mass of styrene-butadiene rubber, 4 parts by mass of SBS, modified mixed fiber, 3 parts by mass of kaolin, and 3 parts by mass of Limestone, 5 parts by mass of polydimethylsiloxane, 1.5 parts by mass of stearic acid, and 1.3 parts by mass of benzoin ether were stirred at 1200 r / min for 27 minutes to obtain a modified mixed basalt fiber pitch.

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Abstract

The invention discloses a preparation method of modified mixed basalt fiber doped asphalt. The method comprises the following steps of soaking basalt fiber and ceramic fiber in excessive sodium hydroxide; discharging sodium hydroxide; instantly adding sodium hydroxyethyl sulfonate and dilauryl peroxide to react at 75 to 95 DEG C and 1 to 2 Mpa to obtain modified mixed fiber; heating substrate asphalt; adding butadiene styrene rubber, SBS, the modified mixed fiber, filling materials, polydimethylsiloxane, stearic acid, benzoin and derivatives; performing stirring to obtain the modified mixed basalt fiber asphalt. The prepared modified mixed basalt fiber asphalt has the advantages of excellent rut resistance, crack resistance, fatigue resistance, high-temperature resistance, anti-corrosion performance and long service life.

Description

technical field [0001] The invention belongs to the research field of road building materials, and in particular relates to a preparation method of asphalt mixed with modified mixed basalt fibers. Background technique [0002] Due to the characteristics of asphalt, such as low cost, good smoothness, low noise, good stability, high rigidity, and fast construction, more and more roads are paved with asphalt. A series of problems such as pavement disease and structural damage have been eliminated, and the service life of the pavement has been reduced. The high-temperature anti-rutting stability, low-temperature crack resistance, and water damage resistance of ordinary asphalt concrete pavement cannot keep up with the requirements of modern use. Therefore, the modification of asphalt has become a current research topic. [0003] Basalt fiber is a research hotspot in recent years. It uses basalt ore as raw material and is drawn by high-temperature melting at high speed. It has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L9/06C08L53/02C08L83/04C08K13/06C08K9/04C08K7/10C08K5/09C08K3/34C08K7/26
CPCC08L95/00C08L2201/08C08L2205/035C08L9/06C08L53/02C08L83/04C08K13/06C08K9/04C08K7/10C08K5/09C08K3/346C08K7/26
Inventor 罗永山
Owner 罗永山
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