掺加橡胶颗粒透水混凝土的路用性能

裴福才¹，李强¹，李峰²

1.山东省路桥集团有限公司，山东 济南  250014；2.山东汇通建设集团有限公司，山东 济南  250002

摘要：为研究掺加橡胶颗粒透水混凝土的性能，选用粒径分别为2.00、0.60、0.18 mm的等体积橡胶颗粒替代粒径为2.36~4.75 mm的细集料，制备透水混凝土，橡胶颗粒与水泥的质量比分别为0.05、0.10、0.15，研究橡胶颗粒对透水混凝土透水性、力学性能及抗冻性能的影响。试验结果发现：随橡胶颗粒与水泥质量比的增大，透水混凝土试件的连通空隙率、透水速率及抗冻融性提高，抗压强度和抗变形能力减小；随橡胶颗粒粒径的减小，透水混凝土试件的连通空隙率、透水速率减小，抗压强度提高，抗冻性能变化不大。粒径为0.18 mm的橡胶颗粒与水泥的质量比为0.05时，透水混凝土试件的抗压强度和抗变形能力最佳。掺橡胶颗粒透水混凝土的抗冻融性能明显优于普通透水混凝土，粒径为0.18 mm的橡胶颗粒与水泥的质量比为0.10时透水混凝土的抗冻融性能最好。

关键词：橡胶颗粒；透水混凝土；透水性能；抗压强度；抗冻融性；抗变形能力

Pavement performance of permeable concrete mixed with rubber particles

PEI Fucai¹, LI Qiang¹, LI Feng²

1. Shandong Luqiao Group Co., Ltd., Jinan 250014, China；2. Shandong Huitong Construction Co., Ltd., Jinan 250002, China

Abstract:To study the performance of permeable concrete with rubber particles, rubber particles with diameters of 2.00, 0.60, and 0.18 mm are selected and mixed with concrete. The mass ratios of rubber particles to cement are 0.05, 0.10, and 0.15, respectively. The fine aggregate with particle size of 2.36 to 4.75 mm is replaced with equivalent volume by rubber particles. The effects of rubber particles on the permeability, mechanical properties, and freeze-thaw resistance of permeable concrete are investigated. Experimental results show that as the mass ratio of rubber particles to cement increases, the connected void ratio, permeability rate, and freeze-thaw resistance of the concrete specimens improves, while the compressive strength and deformation resistance decreases. As the particle size of rubber particles decreases, the connected void ratio and water permeability rate of the permeable concrete specimens decreases, while the compressive strength increases slightly, and the freeze-thaw performance remains relatively stable. When the mass ratio of 0.18 mm rubber particles to cement is 0.05, the compressive strength and deformation resistance of the permeable concrete specimens are the best. The freeze-thaw resistance of rubber particle-modified permeable concrete is significantly better than that of ordinary permeable concrete. When the mass ratio of 0.18 mm rubber particles to cement is 0.10, the freeze-thaw resistance of permeable concrete is the highest.

Keywords:rubber particle; permeable concrete; permeability; compressive strength; freeze-thaw resistance; deformation resistance