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田甜,蒋应军,张文辉,张毅,陈浙江.抗滑颗粒对含砂雾封层性能影响[J].,2022,62(3):272-280

抗滑颗粒对含砂雾封层性能影响

Effect of anti-slip particles on properties of sand fog seal

DOI：10.7511/dllgxb202203007

英文关键词: road engineering sand fog seal accelerated wear test anti-slip particles anti-slip property durability

基金项目:陕西省交通厅科技项目(16-17K20-02K)；河南省交通厅科技项目(2020J-2-2)；浙江省交通厅科技项目(2021067).

作者	单位
田甜,蒋应军,张文辉,张毅,陈浙江

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中文摘要:

为确定含砂雾封层用抗滑颗粒最佳参数，通过加速磨耗试验研究了抗滑颗粒类型、粒径、级配及掺量对含砂雾封层抗滑性及耐久性的影响．结果表明：磨耗1×10 5次后，掺玄武砂、天然河砂、金刚砂的3种含砂雾封层试件的摆式摩擦系数(BPN)分别降低了32.8%、32.4%、29.1%，质量损失率分别为61.78%、64.01%、62.46%；与0.3~0.6 mm和1.18~2.36 mm粒径相比，0.6~1.18 mm金刚砂雾封层试件BPN最大，质量损失率最小；与0.6~1.18 mm单粒径相比，0.6~1.18 mm与0.3~0.6 mm混合比例1∶1的金刚砂雾封层试件BPN最大，0.6~1.18 mm与0.3~0.6 mm混合比例为1∶1、7∶3、9∶1的金刚砂雾封层试件质量损失率分别减小了4.83%、3.54%、0.39%；金刚砂掺量为0.6 kg/m2的试件磨耗BPN曲线位于最上方，质量损失率最小．建议选取0.6~1.18 mm与0.3~0.6 mm混合比例7∶3金刚砂作为含砂雾封层的抗滑颗粒，掺量0.6 kg/m2．经验证，相比不掺加抗滑颗粒雾封胶结料试件及未雾封空白试件，含砂雾封层试件初始BPN分别提高了69.8%和35.2%，而质量损失率比雾封胶结料试件小9.67%．

英文摘要:

In order to determine the optimum parameters of the anti-slip particles for the sand fog seal, the influence of the type, particle size, gradation and dosage of anti-slip particles on the anti-slip property and durability of the sand fog seal is investigated through accelerated wear test. The results show that after 1×105 wear cycles, the British Pendulum Numbers (BPN) of the three types of sand fog seal specimens with basalt sand, natural river sand and emery are reduced by 32.8%, 32.4% and 29.1% respectively, and the mass loss rates are 61.78%, 64.01% and 62.46% respectively. Compared to 0.3-0.6 mm and 1.18-2.36 mm particle sizes, the fog seal specimen with 0.6-1.18 mm emery has the largest BPN and the smallest mass loss rate. Compared with the single particle size of 0.6-1.18 mm, the BPN of the fog seal specimen with 1∶1 of 0.6-1.18 mm and 0.3-0.6 mm emery is the largest, and the mass loss rates of the fog seal specimens with 1∶1, 7∶3 and 9∶1 of 0.6-1.18 mmand 0.3-0.6 mm emery are reduced by 4.83%, 3.54% and 0.39% respectively. When the dosage of emery is 0.6 kg/m2, the specimen abrasion BPN curve lies at the top and the mass loss rate is the smallest. It is recommended to select emery with 7∶3 of 0.6-1.18 mm and 0.3-0.6 mm particle size as the anti-slip particles for sand fog seal and a dosage of 0.6 kg/m2. It is verified that compared to the fog seal specimen without anti-slip particles and the blank specimen without fog seal treatment, the initial BPN of the sand fog seal specimen increases by 69.8% and 35.2% respectively, and the mass loss rate is 9.67% less than that of the fog seal specimens.

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