A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Water-freezing-resistant gelling stable phosphogypsum asphalt concrete and preparation method thereof
The invention provides water-freezing-resistant gelling stable phosphogypsum asphalt concrete and a preparation method thereof. The preparation method comprises the following steps: 1, treating recycled waste phosphogypsum to obtain phosphogypsum powder; 2, PU/cement composite modified asphalt is prepared; 3, quantitatively weighing the PU/cement composite modified asphalt, the natural aggregate and the ardealite powder (replacing mineral powder) obtained in the step 1); and 4, mixing the PU/cement composite modified asphalt, the aggregate and the ardealite filler according to the designed mix proportion to prepare the water/freezing resistant ardealite asphalt concrete. Wherein the composite modification effect of PU and cement can enhance the bonding force of asphalt to natural aggregate and ardealite, significantly improve the water resistance and freezing resistance of the water-resistant/freezing-resistant ardealite asphalt concrete, greatly solve the problems of potential limited practical engineering application and the like caused by poor water stability of ardealite filler, relieve the problem of environmental pollution, and improve the water resistance and freezing resistance of the water-resistant/freezing-resistant ardealite asphalt concrete. The production process is simple, and industrial operation is easy.
本发明提供一种抗水冻型胶凝稳定磷石膏沥青混凝土及其制备方法，包括以下步骤：1、将回收的废弃磷石膏处理后获得磷石膏粉末；2、制备PU/水泥复合改性沥青；3、定量地称取PU/水泥复合改性沥青、天然骨料和步骤1)获得的磷石膏粉末(替代矿粉)；4、根据设计的配合比，将PU/水泥复合改性沥青、集料与磷石膏填料进行拌合，制备抗水/冻型磷石膏沥青混凝土。其中，PU与水泥的复合改性作用能增强沥青对天然骨料与磷石膏的粘结力，显著改善抗水/冻型磷石膏沥青混凝土的抗水抗冻能力，极大解决磷石膏填料因水稳定性差而产生的潜在实际工程应用受限等问题，缓解环境污染问题，且本发明涉及的生产工艺简单、工业化操作容易。
Water-freezing-resistant gelling stable phosphogypsum asphalt concrete and preparation method thereof
The invention provides water-freezing-resistant gelling stable phosphogypsum asphalt concrete and a preparation method thereof. The preparation method comprises the following steps: 1, treating recycled waste phosphogypsum to obtain phosphogypsum powder; 2, PU/cement composite modified asphalt is prepared; 3, quantitatively weighing the PU/cement composite modified asphalt, the natural aggregate and the ardealite powder (replacing mineral powder) obtained in the step 1); and 4, mixing the PU/cement composite modified asphalt, the aggregate and the ardealite filler according to the designed mix proportion to prepare the water/freezing resistant ardealite asphalt concrete. Wherein the composite modification effect of PU and cement can enhance the bonding force of asphalt to natural aggregate and ardealite, significantly improve the water resistance and freezing resistance of the water-resistant/freezing-resistant ardealite asphalt concrete, greatly solve the problems of potential limited practical engineering application and the like caused by poor water stability of ardealite filler, relieve the problem of environmental pollution, and improve the water resistance and freezing resistance of the water-resistant/freezing-resistant ardealite asphalt concrete. The production process is simple, and industrial operation is easy.
本发明提供一种抗水冻型胶凝稳定磷石膏沥青混凝土及其制备方法，包括以下步骤：1、将回收的废弃磷石膏处理后获得磷石膏粉末；2、制备PU/水泥复合改性沥青；3、定量地称取PU/水泥复合改性沥青、天然骨料和步骤1)获得的磷石膏粉末(替代矿粉)；4、根据设计的配合比，将PU/水泥复合改性沥青、集料与磷石膏填料进行拌合，制备抗水/冻型磷石膏沥青混凝土。其中，PU与水泥的复合改性作用能增强沥青对天然骨料与磷石膏的粘结力，显著改善抗水/冻型磷石膏沥青混凝土的抗水抗冻能力，极大解决磷石膏填料因水稳定性差而产生的潜在实际工程应用受限等问题，缓解环境污染问题，且本发明涉及的生产工艺简单、工业化操作容易。
Water-freezing-resistant gelling stable phosphogypsum asphalt concrete and preparation method thereof
一种抗水冻型胶凝稳定磷石膏沥青混凝土及其制备方法
SEO WOONG (author) / XU GUOHAO (author) / CHEN XUYONG (author) / BIAN XIAOYA (author) / WU QIAOYUN (author) / LIU JIE (author) / PAN DENG (author) / CHENG SHUKAI (author)
2023-11-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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