A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention provdies a manufacturing method of a viscosity-reducing asphalt concrete pavement material. The manufacturing method comprises the following steps: (1) adding poly (1, 2-propylene glycol), polyvinyl butyral, benzoyl peroxide and hydroxyl polydimethylsiloxane into a reaction kettle, uniformly mixing, increasing the pressure to 0.3-0.35 MPa, continuously pressurizing for 30-50 minutes, controlling the temperature to 90-95 DEG C, then releasing the pressure to atmospheric pressure, reducing the temperature to 60-70 DEG C, respectively adding dibutyl phthalate of which the mass is 5-8% of that of poly (1, 2-propylene glycol) and ascorbic acid of which the mass is 3-5% of that of poly (1, 2-propylene glycol), separating out precipitates, carrying out reduced-pressure suction filtration to obtain filtrate, and regulating the pH value of the obtained filtrate to 6-6.5 by using a pH regulator to obtain the viscosity reducer. The viscosity reducer has good compatibility with asphalt and can effectively and rapidly adsorb asphalt, after the viscosity reducer is added into asphalt, a reticular lattice structure can be formed, and a stable and non-segregated mixture is formed, so that the rheological property of the asphalt is greatly improved, and the viscosity reducer is more easily and quickly dispersed on the surfaces of cement particles.
一种降粘沥青混凝土路面材料制造方法，包括以下步骤：（1）将聚1,2‑丙二醇，聚乙烯醇缩丁醛，过氧化苯甲酰和羟基聚二甲基硅氧烷加入至反应釜内混合均匀后，升压至0.3‑0.35MPa，持续加压30‑50分钟，温度控制在90‑95℃，之后泄压至大气压，温度降到60‑70℃，分别加入聚1,2‑丙二醇质量5‑8％的邻苯二甲酸二丁酯和聚1,2‑丙二醇质量3‑5％的抗坏血酸，析出沉淀，减压抽滤，得到的滤液，使用pH调节剂调节pH值为6‑6.5，得到降粘剂，本发明降粘剂与沥青相容性好，有效并且快速吸附沥青，降粘剂加人沥青后能够形成一种网状晶格结构,使其形成稳定而不离析的混合物，从而大大提高了沥青流变性能，更易迅速分散在水泥颗粒表面。
The invention provdies a manufacturing method of a viscosity-reducing asphalt concrete pavement material. The manufacturing method comprises the following steps: (1) adding poly (1, 2-propylene glycol), polyvinyl butyral, benzoyl peroxide and hydroxyl polydimethylsiloxane into a reaction kettle, uniformly mixing, increasing the pressure to 0.3-0.35 MPa, continuously pressurizing for 30-50 minutes, controlling the temperature to 90-95 DEG C, then releasing the pressure to atmospheric pressure, reducing the temperature to 60-70 DEG C, respectively adding dibutyl phthalate of which the mass is 5-8% of that of poly (1, 2-propylene glycol) and ascorbic acid of which the mass is 3-5% of that of poly (1, 2-propylene glycol), separating out precipitates, carrying out reduced-pressure suction filtration to obtain filtrate, and regulating the pH value of the obtained filtrate to 6-6.5 by using a pH regulator to obtain the viscosity reducer. The viscosity reducer has good compatibility with asphalt and can effectively and rapidly adsorb asphalt, after the viscosity reducer is added into asphalt, a reticular lattice structure can be formed, and a stable and non-segregated mixture is formed, so that the rheological property of the asphalt is greatly improved, and the viscosity reducer is more easily and quickly dispersed on the surfaces of cement particles.
一种降粘沥青混凝土路面材料制造方法，包括以下步骤：（1）将聚1,2‑丙二醇，聚乙烯醇缩丁醛，过氧化苯甲酰和羟基聚二甲基硅氧烷加入至反应釜内混合均匀后，升压至0.3‑0.35MPa，持续加压30‑50分钟，温度控制在90‑95℃，之后泄压至大气压，温度降到60‑70℃，分别加入聚1,2‑丙二醇质量5‑8％的邻苯二甲酸二丁酯和聚1,2‑丙二醇质量3‑5％的抗坏血酸，析出沉淀，减压抽滤，得到的滤液，使用pH调节剂调节pH值为6‑6.5，得到降粘剂，本发明降粘剂与沥青相容性好，有效并且快速吸附沥青，降粘剂加人沥青后能够形成一种网状晶格结构,使其形成稳定而不离析的混合物，从而大大提高了沥青流变性能，更易迅速分散在水泥颗粒表面。
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