A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Flame-retardant warm-mixing capsule self-healing asphalt concrete and preparation method thereof
The invention discloses flame-retardant warm-mixing capsule self-healing asphalt concrete and a preparation method thereof. The preparation method comprises the following steps: mixing layered double hydroxides and an organic viscosity reducer to obtain a flame-retardant warm mixing agent; mixing a formaldehyde solution with urea, adjusting the pH value to 8-9, adding graphene, stirring for reaction, and adding water to obtain a prepolymer solution; mixing an emulsifier solution with n-caprylic alcohol and an asphalt regenerant to obtain a core material emulsion; dropwise adding the prepolymer solution into the core material emulsion, adding ammonium chloride and resorcinol, adjusting the pH to 2-3, and curing to obtain a self-healing capsule; and premixing steel cotton fiber and aggregate, adding modified asphalt, flame-retardant warm mixing agent and self-healing capsule, stirring, adding mineral powder, stirring, and forming to obtain the asphalt concrete. The synergistic effect of the layered double hydroxides, the organic viscosity reducer and the self-healing capsules can be fully exerted, and the flame retardant property, the warm mixing property and the self-healing property of the obtained asphalt concrete are remarkably improved.
本发明公开一种阻燃温拌胶囊自愈合沥青混凝土及其制备方法。该制备方法，包括如下步骤：将层状双金属氢氧化物和有机降粘剂混合，得阻燃温拌剂；将甲醛溶液和尿素混合，调节pH至8～9，加石墨烯，搅拌反应，加水得预聚体溶液；将乳化剂溶液和正辛醇、沥青再生剂混合，得芯材乳液；将预聚体溶液滴加至芯材乳液中，加氯化铵和间苯二酚，调节pH至2～3，熟化后，得自愈合胶囊；将钢棉纤维和集料预拌和，随后加改性沥青、阻燃温拌剂、自愈合胶囊搅拌，然后加矿粉搅拌，再经成型工序，得沥青混凝土。本发明通过层状双金属氢氧化物、有机降粘剂和自愈合胶囊，能够充分发挥其协同作用，显著提高所得沥青混凝土的阻燃性能、温拌性能和自愈合性能。
Flame-retardant warm-mixing capsule self-healing asphalt concrete and preparation method thereof
The invention discloses flame-retardant warm-mixing capsule self-healing asphalt concrete and a preparation method thereof. The preparation method comprises the following steps: mixing layered double hydroxides and an organic viscosity reducer to obtain a flame-retardant warm mixing agent; mixing a formaldehyde solution with urea, adjusting the pH value to 8-9, adding graphene, stirring for reaction, and adding water to obtain a prepolymer solution; mixing an emulsifier solution with n-caprylic alcohol and an asphalt regenerant to obtain a core material emulsion; dropwise adding the prepolymer solution into the core material emulsion, adding ammonium chloride and resorcinol, adjusting the pH to 2-3, and curing to obtain a self-healing capsule; and premixing steel cotton fiber and aggregate, adding modified asphalt, flame-retardant warm mixing agent and self-healing capsule, stirring, adding mineral powder, stirring, and forming to obtain the asphalt concrete. The synergistic effect of the layered double hydroxides, the organic viscosity reducer and the self-healing capsules can be fully exerted, and the flame retardant property, the warm mixing property and the self-healing property of the obtained asphalt concrete are remarkably improved.
本发明公开一种阻燃温拌胶囊自愈合沥青混凝土及其制备方法。该制备方法，包括如下步骤：将层状双金属氢氧化物和有机降粘剂混合，得阻燃温拌剂；将甲醛溶液和尿素混合，调节pH至8～9，加石墨烯，搅拌反应，加水得预聚体溶液；将乳化剂溶液和正辛醇、沥青再生剂混合，得芯材乳液；将预聚体溶液滴加至芯材乳液中，加氯化铵和间苯二酚，调节pH至2～3，熟化后，得自愈合胶囊；将钢棉纤维和集料预拌和，随后加改性沥青、阻燃温拌剂、自愈合胶囊搅拌，然后加矿粉搅拌，再经成型工序，得沥青混凝土。本发明通过层状双金属氢氧化物、有机降粘剂和自愈合胶囊，能够充分发挥其协同作用，显著提高所得沥青混凝土的阻燃性能、温拌性能和自愈合性能。
Flame-retardant warm-mixing capsule self-healing asphalt concrete and preparation method thereof
一种阻燃温拌胶囊自愈合沥青混凝土及其制备方法
WU SHAOPENG (author) / JIANG QI (author) / CHEN QINGSONG (author) / XIE JUN (author) / CHEN MEIZHU (author) / LIU QUANTAO (author) / REN YANFEI (author) / XU HAIQIN (author) / ZHAO YUECHAO (author)
2021-05-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2021
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