胶粉改性沥青中胶粉用量的定量测定：QCT法与FTIR法的比较研究

IF 8 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Construction and Building Materials Pub Date : 2025-02-07 DOI:10.1016/j.conbuildmat.2025.139989

Linhao Zhang , Zhen-gang Feng , Fengjie Cai , Zhe Lu , Xinjun Li

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引用次数: 0

摘要

橡胶粉改性沥青的变形性能受橡胶粉掺量的影响较大，因此根据其变形性能定量确定橡胶粉改性沥青的橡胶粉掺量是很有前景的。用不同掺量的废胶粉（WRP）和工程胶粉（ERP）制备了胶粉改性沥青。在沥青质量控制试验（QCT）的基础上，对不同胶粉改性沥青的变形性能进行了表征。分析了胶粉掺量对改性沥青的最大蠕变变形量（MCD）、变形回复率（DRR）和蠕变速率平均值（AVCR）的影响。建立了试验指标MCD、DRR、AVCR与胶粉用量的相关模型。此外，对胶粉改性沥青进行了傅里叶变换红外光谱（FTIR）分析，并分析了FTIR指数（Ir）与胶粉掺量的关系。结果表明：胶粉用量与MCD、AVCR呈显著负相关，与DRR呈正相关；在胶粉改性沥青中，FTIR指数也与胶粉掺量呈高度相关。与FTIR指标相比，用QCT指标测定胶粉改性沥青中胶粉掺量具有更高的可靠性。考虑到准确性和可靠性，建议采用QCT法的AVCR指标定量确定胶粉改性沥青中胶粉用量。

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Quantitative determination for rubber powder dosage in rubber powder modified bitumen: A comparative study of the QCT and FTIR tests

The deformation properties of rubber powder modified bitumen are significantly affected by the rubber powder dosage, so it is promising to quantitatively determine the rubber powder dosage of rubber powder modified bitumen based on the deformation properties. The rubber powder modified bitumens with different dosages of waste rubber powder (WRP) and engineering rubber powder (ERP) were prepared. Then, the deformation properties of different rubber powder modified bitumens were characterized based on the bitumen quality control test (QCT). The effects of rubber powder dosage on maximum creep deformation (MCD), deformation recovery rate (DRR), and the average value of creep rates (AVCR) of rubber powder modified bitumen were analyzed. Furthermore, the correlation models of the testing indicators (MCD, DRR, and AVCR) with rubber powder dosage were established. In addition, the Fourier transform infrared spectroscopy (FTIR) was conducted on the rubber powder modified bitumen, and the relation between FTIR index (I_r) and rubber powder dosage was also analyzed. Results show that the rubber powder dosage shows a significantly negative correlation with MCD and AVCR, but a positive correlation with DRR. The FTIR index also exhibits a high correlation with the rubber powder dosage in rubber powder modified bitumen. Compared to the FTIR indicator, using the QCT indicators to determine the rubber powder dosage in rubber powder modified bitumen has a higher reliability. Considering the accuracy and reliability, the AVCR indicator from the QCT method is recommended to quantitatively determine the rubber powder dosage in rubber powder modified bitumen.

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来源期刊

Construction and Building Materials 工程技术-材料科学：综合

CiteScore

13.80

自引率

21.60%

发文量

3632

审稿时长

82 days

期刊介绍： Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.