Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Self-compacting ardealite road base material and preparation method thereof
The invention provides a self-compacting ardealite road base material and a preparation method thereof, and belongs to the technical field of building materials, the base material comprises the following components in percentage by mass: 40-55% of ardealite, 4-13% of a cementing material, 35-50% of aggregate, 0.2-0.7% of an additive and the balance of water, wherein the cementing material comprises cement and slag powder, and the water-cement ratio is 4.5-7.5. According to the self-compacting phosphogypsum road base material, the properties of phosphogypsum and a cementing material are fully exerted, the filling slump expansion index of the formed self-compacting phosphogypsum road base material reaches SF1 level (550-655 mm), the expansion time T500 index reaches VS1 level (larger than or equal to 2 s), the 28-day compressive strength is larger than or equal to 8 MPa, the water softening coefficient is larger than or equal to 85%, and the water absorption rate is smaller than or equal to 10%. According to the phosphogypsum road base material disclosed by the invention, cement with a relatively low mixing amount is used, so that early-stage diseases of a road base are effectively overcome or avoided; and meanwhile, the ardealite with medium and high doping amount is used, so that the ardealite can be quickly consumed, the inventory is reduced, the stacking problem is relieved, and remarkable environmental, economic and social benefits are achieved.
本发明提供了一种自密实磷石膏道路基层材料及其制备方法，属于建筑材料技术领域，所述基层材料包括磷石膏、胶凝材料、骨料、外加剂和水，各组分按如下质量百分比计：磷石膏40‑55%、胶凝材料4‑13%、骨料35‑50%、外加剂0.2‑0.7%，其中胶凝材料包括水泥和矿渣粉，水灰比为4.5‑7.5。本发明充分发挥磷石膏和胶凝材料的性质，形成的自密实磷石膏道路基层材料，其填充性坍落扩展度指标达到SF1级(550‑655mm)，扩展时间T500指标达到VS1级(≥2s)，28天抗压强度≥8MPa，泡水软化系数≥85%，吸水率≤10%。本发明的磷石膏道路基层材料，使用较低掺量的水泥，有效克服或避免道路基层早期病害的发生；同时使用中高掺量的磷石膏，能够快速消耗磷石膏，降低库存，缓解堆放问题，具有显著的环境、经济和社会效益。
Self-compacting ardealite road base material and preparation method thereof
The invention provides a self-compacting ardealite road base material and a preparation method thereof, and belongs to the technical field of building materials, the base material comprises the following components in percentage by mass: 40-55% of ardealite, 4-13% of a cementing material, 35-50% of aggregate, 0.2-0.7% of an additive and the balance of water, wherein the cementing material comprises cement and slag powder, and the water-cement ratio is 4.5-7.5. According to the self-compacting phosphogypsum road base material, the properties of phosphogypsum and a cementing material are fully exerted, the filling slump expansion index of the formed self-compacting phosphogypsum road base material reaches SF1 level (550-655 mm), the expansion time T500 index reaches VS1 level (larger than or equal to 2 s), the 28-day compressive strength is larger than or equal to 8 MPa, the water softening coefficient is larger than or equal to 85%, and the water absorption rate is smaller than or equal to 10%. According to the phosphogypsum road base material disclosed by the invention, cement with a relatively low mixing amount is used, so that early-stage diseases of a road base are effectively overcome or avoided; and meanwhile, the ardealite with medium and high doping amount is used, so that the ardealite can be quickly consumed, the inventory is reduced, the stacking problem is relieved, and remarkable environmental, economic and social benefits are achieved.
本发明提供了一种自密实磷石膏道路基层材料及其制备方法，属于建筑材料技术领域，所述基层材料包括磷石膏、胶凝材料、骨料、外加剂和水，各组分按如下质量百分比计：磷石膏40‑55%、胶凝材料4‑13%、骨料35‑50%、外加剂0.2‑0.7%，其中胶凝材料包括水泥和矿渣粉，水灰比为4.5‑7.5。本发明充分发挥磷石膏和胶凝材料的性质，形成的自密实磷石膏道路基层材料，其填充性坍落扩展度指标达到SF1级(550‑655mm)，扩展时间T500指标达到VS1级(≥2s)，28天抗压强度≥8MPa，泡水软化系数≥85%，吸水率≤10%。本发明的磷石膏道路基层材料，使用较低掺量的水泥，有效克服或避免道路基层早期病害的发生；同时使用中高掺量的磷石膏，能够快速消耗磷石膏，降低库存，缓解堆放问题，具有显著的环境、经济和社会效益。
Self-compacting ardealite road base material and preparation method thereof
一种自密实磷石膏道路基层材料及其制备方法
CHEN JIE (Autor:in) / SONG WENFENG (Autor:in) / TAN CHANGYUAN (Autor:in) / SUN SIYU (Autor:in) / LIANG YUJIE (Autor:in) / LIU ANRAN (Autor:in)
27.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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