冻胶压裂液是一种报道较少的压裂液体系,该压裂液具有增粘能力强、携砂性好、摩阻低、冻胶水化破胶后残渣少等优点。
The system has strong ability of increasing viscosity, good prop-carrying capacity, low frictional resistance, less residue after gel-breaking and so on.
石屑混凝土的抗冻性较天然河砂混凝土要好,抗渗性与天然河砂混凝土相当。
The freeze-resistance of crushed stone dust concrete was better than natural sand concrete. The impermeability of crushed stone dust and natural sand concrete is nearly.
通过大量试验,系统研究了人工砂高性能混凝土的耐久性,对抗渗性、抗冻性、氯离子扩散系数等项目进行了测试。
Through a great deal of experiments, the durability of HPC with artificial sand are studied systematically. Impermeability, freezing resistance and chloride ion diffusion are tested.
采用快速冻融法研究了养护制度、轻集料的预湿程度和体积砂率对高强轻集料混凝土抗冻性能的影响。结果表明:轻集料混凝土具有良好的抗冻性能。
The effect of curing regime, pre-wetting degree of lightweight aggregate, and the volume rate of sand on the frost resistance of high strength lightweight concrete is investigated.
溜砂的主要诱发因素是地表水、地下水、河流冲刷、动荷载作用、风荷载作用、冻融作用、植物及人为因素。
The primary inducing factors of sand-sliding are surface water, ground water, stream erosion, dynamic load action, wind load action, freezing-and-thawing action, plant and man-made factors.
抗冻强度损失率也要低于豆罗砂混凝土,干缩情况也要比豆罗砂混凝土好的多;
The anti-frozen intensity loss factor must be lower than the Douluo granulated substance concretes, and the air shrinkage situation much better than Douluo granulated substance concretes;
抗冻强度损失率也要低于豆罗砂混凝土,干缩情况也要比豆罗砂混凝土好的多;
The anti-frozen intensity loss factor must be lower than the Douluo granulated substance concretes, and the air shrinkage situation much better than Douluo granulated substance concretes;
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