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由于天然材料日益紧缺 ,研制适宜于流动性沙漠地区公路沙害防治的人工替代材料势在必行 .结合塔里木沙漠公路沙害环境 ,实验室优选出 L VA、LVP、WBS和 STB 4种抗性较好的固沙剂 ,对其理化性能、粘结体力学性能和抗风蚀性能等测试结果表明 :颗粒粒径 0 .2μm～ 0 .5μm,粘度 1 2 Pa· s～ 1 5Pa· s;1 0℃～ 70℃温度下无沉淀 ,不燃烧 ;实验抗压强度 1 .0 MPa～1 2 .1 MPa;1 0℃～ - 2 0℃低温下重量损失率 0 %～ 1 .8%;紫外光照射 30 0 h强度损失率 0 %～ 42 %;在 5m· s- 1～ 2 5.3m· s- 1实验风速下 ,风蚀量 0 g· ( 1 0 6cm2· h) - 1～ 4.0 g· ( 1 0 6cm2· h) - 1 ;现场试验固结层厚度 0 .2 mm～ 0 .5mm,强度高 .化学工程固沙技术适宜于塔里木沙漠公路沙害防治 .
Due to the increasingly scarce natural materials, it is imperative to develop artificial substitute materials suitable for the prevention and control of highway sand hazards in the liquid desert areas. Combining with the desert environment of the Tarim Desert Highway, the laboratories selected four kinds of resistances of L VA, LVP, WBS and STB Good sand-fixing agent, its physical and chemical properties, mechanical properties of the bond and wind erosion resistance test results show that: the particle size of 0. 2μm ~ 0 .5μm, viscosity 12Pa · s ~ 15Pa · s; No precipitation at ℃ ~ 70 ℃, no burning; experimental compressive strength 1.0 MPa ~ 1 2 .1 MPa; weight loss rate 0% ~ 1.8% at low temperature from 10 ℃ ~ -20 ℃; ultraviolet light The rate of wind erosion was 0 g · (1 0 6cm2 · h) -1 ~ 4.0 g · (-1) at 0 ~ 42% of the intensity at 30 h after irradiation, and at wind speed of 5m · s-1 ~ 2 · 5.3m · s- 1 0 6cm2 · h) -1 Field test Consolidation layer thickness 0.2mm ~ 0.5mm, high strength Chemical engineering sand fixation technology is suitable for desertification prevention and control of Tarim Desert Highway.