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SBS modified emulsifying asphalt and preparation process thereof

A technology of emulsified asphalt and modification, applied in building components, building insulation materials, buildings, etc., can solve the problems of unqualified emulsified asphalt, cumbersome methods, difficult to modify asphalt, etc., reduce production difficulty, improve high temperature performance, and resist Good permanent deformation effect

Inactive Publication Date: 2006-06-28
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this method of making liquid SBS is more loaded down with trivial details, and liquid SBS contains more surfactant, if produce emulsified asphalt with this liquid SBS, after adding this surfactant of emulsifier, then surfactant is too much, can As a result, the emulsified asphalt is unqualified, so the domestic liquid SBS is difficult to use in the production of emulsified modified asphalt, and it has not been further researched and applied in the field of modified emulsified asphalt

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  • SBS modified emulsifying asphalt and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Composition formula of SBS modified emulsified asphalt:

[0053] Base bitumen (%) 57

[0054] SBS modifier (%) 1.8

[0055] Sasobit (Sasobit) (%) 0.9

[0056] WD-3#(%) 0.3

[0057] 63℃ hot water (%) 37.85

[0058] Cationic emulsifier MQK-1M 1.6

[0059] Calcium chloride 0.4

[0060] Polyvinyl alcohol 0.15

[0061] SBS emulsified asphalt preparation method:

[0062] According to the composition formula, adopt figure 1 The process flow diagram is carried out, the first stage:

[0063] a) Heat base asphalt to 185°C, add SBS modifier, and stir for 20 minutes.

[0064] b) Add Sasobit (Sasobit), cut by high-speed shear for 1.5 hours, add WD-3# to react for 15 minutes.

[0065] second stage:

[0066] c) Add an emulsifier to hot water at 63°C, then add hydrochloric acid to adjust the pH to 1.8, and stir evenly until the liquid is transparent.

[0067] d) adding calcium chloride and polyvinyl alcohol to the above solution to obtain a soap solution.

[0068] e) Put t...

Embodiment 2

[0077] Composition formula of SBS modified emulsified asphalt:

[0078] Base pitch (%) 56.7

[0079] SBS modifier (%) 2.1

[0080] Sasobit (Sasobit) (%) 0.9

[0081] WD-3# stabilizer (%) 0.3

[0082] 65℃ hot water (%) 37.85

[0083] Cationic emulsifier MQK-MQ3 1.6

[0084] Calcium chloride 0.4

[0085] Polyvinyl alcohol 0.15.

[0086] SBS emulsified asphalt preparation method:

[0087] According to the composition formula, adopt figure 1 The process flow diagram is carried out, the first stage:

[0088] a) Heat base asphalt to 190°C, add SBS modifier, and stir for 20 minutes.

[0089] b) Add Sasobit (Sasobit), cut by high-speed shear for 1.5 hours, add WD-3# to react for 15 minutes.

[0090] second stage:

[0091] c) Add an emulsifier to hot water at 65°C, then add hydrochloric acid to adjust the pH value to 2.0, and stir evenly until the liquid is transparent.

[0092] d) adding calcium chloride and polyvinyl alcohol to the above solution to obtain a soap solution...

Embodiment 3

[0099] Composition formula of SBS modified emulsified asphalt: weight percentage

[0100] Base bitumen 54.9

[0101] SBS modifier 1.6

[0102] Sasobit 1.2

[0103] WD-3# 0.3

[0104] 62℃ hot water 39.85

[0105] Cationic emulsifier Redicote@-C-450 1.6

[0106] Calcium chloride 0.4

[0107] Polyvinyl alcohol 0.15.

[0108] SBS emulsified asphalt preparation method:

[0109] According to the composition formula, adopt figure 1 The process flow diagram is carried out, the first stage:

[0110] a) Heat base asphalt to 180°C, add SBS modifier, and stir for 20 minutes.

[0111] b) Add Sasobit (Sasobit), cut by high-speed shear for 1.5 hours, add WD-3# to react for 15 minutes.

[0112] second stage:

[0113] c) Add an emulsifier to hot water at 62°C, then add hydrochloric acid to adjust the pH to 1.8, and stir evenly until the liquid is transparent.

[0114] d) adding calcium chloride and polyvinyl alcohol to the above solution to obtain a soap solution.

[0115] e) Put ...

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Abstract

The invention relates to SBS modification bitumen that is made up from 54-62% base bitumen, 0.3-1.6% Sasobit, 0.06-0.55% WD-3# stabilizer, 1.2-1.8% bitumen positive ion emulsifying agent, 35-40% hot water at 55-60 degree centigrade, 0.4% CaCl2, 0.15% polyvinyl alcohol. The method includes the following steps: heating the base bitumen into 180-190 degree centigrade, adding SBS modifier, whisking for 20min; adding Sasobit cutting for 1-2 hours, adding stabilizer reacting for 15min to gain modified bitumen, adding emulsifying agent, CaCl2 and polyvinyl alcohol into the hot water adjusting pH value to 1.5-3.5 to gain soap solution, emulsifying and dispersing the modified bitumen, pressurizing and cooling. The invention has high softening point. It has low emulsifying point that could decrease the consumption of the device.

Description

technical field [0001] The invention belongs to the technical field of modern pavements, in particular to modified asphalt materials for road construction, in particular to SBS modified emulsified asphalt. Background technique [0002] The modified asphalt obtained by improving the performance of asphalt with the polymer styrene-butadiene-styrene (SBS for short) can increase the viscosity and elasticity of the asphalt, and improve the high-temperature and low-temperature performance of the asphalt. [0003] Heating the asphalt to make it have sufficient fluidity and low enough viscosity, and at the same time, prepare soap liquid with emulsifier, and then emulsify the asphalt through emulsification equipment to form a stable colloid to prepare emulsified asphalt. But ordinary emulsified asphalt and SBR latex-modified emulsified asphalt have low softening point of evaporation residue, and the high temperature performance is not ideal. [0004] SBS modified asphalt has a very ...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08J3/03C08K3/22
Inventor 吴旷怀杨海清杨奇竹
Owner GUANGZHOU UNIVERSITY
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