Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Stable phosphogypsum pavement subbase material as well as preparation method, construction method and application thereof
The invention relates to the technical field of pavement base and subbase materials, in particular to a stable ardealite pavement subbase material as well as a preparation method, a construction method and application thereof. The stable ardealite pavement subbase material is prepared from the following raw materials in parts by weight: 87-93 parts of ardealite, 7-9 parts of calcined ardealite, 1-4 parts of lime and 14-20 parts of water. According to the invention, the process parameters such as the mixing ratio of calcined phosphogypsum to phosphogypsum waste, the addition amount of water and the like are researched and designed to obtain the stable phosphogypsum material which is high in strength, high in water stability and durability and is suitable for the pavement subbase layer, and the 7-day unconfined compressive strength of the prepared stable phosphogypsum pavement subbase layer material is 3.75 MPa; and the unconfined compressive strength loss rate is 12.3-14.7% after four dry-wet cycles.
本发明涉及路面基层、底基层材料技术领域，尤其涉及一种稳定磷石膏路面底基层材料及其制备方法与施工方法和应用。该稳定磷石膏路面底基层材料，由包括以下重量份数的原料制备得到：磷石膏87～93份、煅烧磷石膏7～9份、石灰1～4份、水14～20份。对煅烧磷石膏与磷石膏废料的配合比，水的添加量等工艺参数进行了研究和设计，获得高强度、高水稳定性和耐久性的适用于路面底基层的稳定磷石膏材料，本发明制得的稳定磷石膏路面底基层材料的7天无侧限抗压强度为3.75MPa，干湿循环4次后无侧限抗压强度损失率为12.3～14.7％。
Stable phosphogypsum pavement subbase material as well as preparation method, construction method and application thereof
The invention relates to the technical field of pavement base and subbase materials, in particular to a stable ardealite pavement subbase material as well as a preparation method, a construction method and application thereof. The stable ardealite pavement subbase material is prepared from the following raw materials in parts by weight: 87-93 parts of ardealite, 7-9 parts of calcined ardealite, 1-4 parts of lime and 14-20 parts of water. According to the invention, the process parameters such as the mixing ratio of calcined phosphogypsum to phosphogypsum waste, the addition amount of water and the like are researched and designed to obtain the stable phosphogypsum material which is high in strength, high in water stability and durability and is suitable for the pavement subbase layer, and the 7-day unconfined compressive strength of the prepared stable phosphogypsum pavement subbase layer material is 3.75 MPa; and the unconfined compressive strength loss rate is 12.3-14.7% after four dry-wet cycles.
本发明涉及路面基层、底基层材料技术领域，尤其涉及一种稳定磷石膏路面底基层材料及其制备方法与施工方法和应用。该稳定磷石膏路面底基层材料，由包括以下重量份数的原料制备得到：磷石膏87～93份、煅烧磷石膏7～9份、石灰1～4份、水14～20份。对煅烧磷石膏与磷石膏废料的配合比，水的添加量等工艺参数进行了研究和设计，获得高强度、高水稳定性和耐久性的适用于路面底基层的稳定磷石膏材料，本发明制得的稳定磷石膏路面底基层材料的7天无侧限抗压强度为3.75MPa，干湿循环4次后无侧限抗压强度损失率为12.3～14.7％。
Stable phosphogypsum pavement subbase material as well as preparation method, construction method and application thereof
一种稳定磷石膏路面底基层材料及其制备方法与施工方法和应用
LUO HUI (Autor:in) / XIAO GUOTAO (Autor:in) / XU WENSHENG (Autor:in) / GAO YANZHAO (Autor:in) / ZHAO HUI (Autor:in) / LIU YUTONG (Autor:in) / TAO JIANGFENG (Autor:in) / LIU SONG (Autor:in) / LIAN JINGLONG (Autor:in) / DI LIN (Autor:in)
05.07.2022
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2023
Subbase Permeability and Pavement Performance
| NTIS | 1987