2) dry-wet cycle
干湿循环
1.
An experimental study on the performance of concrete inside fly ash in sulfate environment was carried out by dry-wet cycle in water or sodium sulfate solution and measurement of dynamic lnodulus of elasticity.
以内掺粉煤灰制成的混凝土作为研究对象,在水中和不同浓度硫酸钠溶液中分别进行干湿循环后,通过对相对动弹性模量损失率的测量,说明掺加粉煤灰的高性能混凝土对硫酸盐侵蚀有较好的抵抗性能。
2.
They experienced dry-wet cycle in sodium sulfate solution.
以内掺粉煤灰制成的高性能混凝土和普通硅酸盐水泥以及抗硫酸盐水泥制成的高性能混凝土作为研究对象,在硫酸钠溶液中进行干湿循环后,通过对相对动弹性模量,重量损失率的测量,说明掺加粉煤灰的高性能混凝土对硫酸盐侵蚀有较好的抵抗性能。
3.
The profiles of chloride ion in concrete were obtained from the results of experiments that were under typical conditions such as dry-wet cycle and immersion condition.
基于典型服役环境条件,采用干湿循环和浸泡试验方法,通过测试不同条件下混凝土内部不同位置氯离子含量,研究外部氯离子在混凝土中的沉积特性。
3) drying and wetting cycle
干湿循环
1.
To improve the ability of concrete against seawater corrosion,a kind of anticorrosion admixture for the concrete is investigated by experimental method of chlorine ion permeability,sulfate corrosion,drying and wetting cycles in the corrosion envionment,and the mechanism of the admixture is analytically studied.
为提高混凝土耐海水腐蚀的性能,采用氯离子渗透、硫酸盐腐蚀、腐蚀干湿循环等试验方法来研究耐腐蚀外加剂的性能,并且对混凝土耐腐蚀外加剂的机理进行分析。
2.
Unconfined compression tests are conducted on expansive soil under different drying and wetting cycles.
通过膨胀率及膨胀力试验,分析了燕山水库溢洪道尾水渠膨胀土不同含水率对土体膨胀性的影响,并模拟了土体在自然条件下的干湿循环过程,通过无侧限抗压强度试验测试了不同干湿循环次数后土体的强度,揭示了干湿循环效应对膨胀土强度的影响。
4) dry-wet cycling
干湿循环
1.
Numerical simulation of deformation process of expansive soil slopes due to dry-wet cycling;
干湿循环下膨胀土边坡变形发展过程的数值模拟
2.
Test results indicated that the dry-wet cycling was the main factor of the problem.
结果发现,干湿循环是导致这一问题产生的根本原因。
3.
The long-term immersion, dry-wet cycling and alternating-current resistance are selected as the testing methods in this thesis.
选择长期浸泡法、干湿循环法和交流电阻法作为本论文的试验方法。
5) wetting-drying cycle
干湿循环
1.
Research on mechanical properties of expansive soil under wetting-drying cycle;
干湿循环条件下膨胀土力学性能试验研究
2.
With the research object of expansive soil in Naming, Guangxi , combining on the observation date of expansive soil slope of field engineering ,the change law of the strength and deformation and damage to cumulative fatigue of manipulated expansive soil under wetting-drying cycle are disclosured by wetting-drying cycle test in laboratory.
本文以广西南宁膨胀土为研究对象,结合现场膨胀土边坡的观测资料,通过室内膨胀土干湿循环试验,探讨了干湿循环条件下膨胀土强度及变形规律,初步揭示了膨胀土在干湿交替环境下的累积损伤规律,主要研究成果如下: 1、通过控制温度和湿度的干湿循环试验和常规三轴试验,得出了不同干湿循环控制参数下膨胀土的变形与强度参数衰减的变化规律,发现膨胀土的干湿循环强度衰减主要发生在1～5次循环,且稳定强度和次数均随循环幅度的增大而减小,在单循环幅度下建立了膨胀土强度参数C与干湿循环次数N、干湿循环幅度△w的表达式。
3.
Through analyzing the experimental data,the change law of expansive soil with the strength of wetting-drying cycle is found out.
对江苏222省道南徐路拓宽改造工地现场的膨胀土进行干湿循环的试验研究,包括直剪试验和无侧限抗压强度试验,分析了试验数据,从而得到膨胀土随干湿循环强度的变化规律,可为实际工程需要提供可靠的数据。
6) drying and wetting cycles
干湿循环
1.
A CT study on the crack evolution of expansive soil during drying and wetting cycles;
膨胀土干湿循环胀缩裂隙演化的CT试验研究
2.
By using drying and wetting cycles in water and sulfate solution,the effects of several factors on the resistance to sulfate attack of lightweight aggregate concrete were studied,the factors include:water binder ratio,air-entrained agent,content of fly ash and lightweight aggregate.
采用在水中和硫酸盐溶液中立浸并进行干湿循环的试验方法,分析讨论了水胶比、引气剂掺量、粉煤灰掺量及轻集料对轻集料混凝土抗硫酸盐侵蚀性能影响的规律。
3.
By using drying and wetting cycles in water and sulfate salt solution, the effect of several factors on the resistance to sulfate salt crystallization of cementfly ash composite binder materials was studied, the factors include: waterbinder ratio, fineness and content of fly ash, fly ash blended with less silica fume and sulfate salt solution concentration.
采用在清水和硫酸盐溶液中进行干湿循环的试验方法,分析讨论了水胶比、粉煤灰细度、粉煤灰掺量、粉煤灰与硅灰复掺及硫酸盐溶液浓度对水泥-粉煤灰复合胶凝材料抗硫酸盐结晶膨胀侵蚀性能影响的规律。
补充资料：湿空气透平循环
湿空气透平循环
cycle of humid air turbine
至0.92，U=0.85，Z=0.4，T。=1673K，。一40时，HAT循环的甲可以高达0.59以上。通常，HAT循环的供电效率要比余热锅炉型联合循环高5%左右;在50纬负荷时，则会高20%。0.矗U吕O。即护一.一闷一自一，u=0.75U一0. 70U .0.665 10 15 20 26 30 35 40 45tT:~eonst，Z=const时刃=f(。，U)的关系肠44貂n nlo左︸ 图T.一1673Kwloo咖几=压573KT’ .1473KT.一1373Kx吕0。28U=0.66900朗7oo柳咖枷5 10 15即25 30 35 40 45，图SU=。onst，X=eonst时，二=f(。，几)的关系 HAT循环也能用于整体煤气化联合循环中，简称IGHAT，有利于提高供电效率，并使发电成本适当降低。增加，以及燕汽具有做功能力大的特点，同时中间冷却方案可以减少空气的压缩功，因而循环的比功很大;⑤湿空气中含有大量的水燕气，能抑制NO二的生成.其主要缺点则与程氏双流体循环相似，即:由于随燃气排向大气的水蒸气难于回收，需要设里较大容量的水处理设备.以便连续地向系统补充软水. 当设定了大气温度T，、低压压气机的等摘效率、高压压气机的等摘效率、嫩烧室的效率、各部分的流阻损失系数、湿空气透平的等摘效率以及高、低压压气机之间压比的分配规律之后，HAT循环的供电效率粉和比功。只是总温比(r一T。/TI)、总压比(目、回热器的回热度(U)和喷水燕发珍混倍率X的函数.式中T:是撰烧室出口处湿空气的绝对温度。X是指在燕发饱和器中因喷水燕发而进人空气的水蒸气的质量倍率，一般不宜超过0.4. 图2~图5中分别给出了甲~f(。，T。)、7一f(。，Z)、甲=f(。，U)和w=f(。，T。)的变化关系.由图可见，随着T。、X的增高，甲和w将相应地增大，但。则有一个随之增大的最佳压比￡，和‘值，其值要比简单循环燃气轮机的大，例如:当T。~1473K，X-0.25，U=0.65时，。，=30一40。当U值增大时，，也将增高，但最佳。，值却是下降的。计算表明:倘若压气机的等嫡效率增至。.88，湿空气透平的等摘效率增。.晶Tt=1673KTt=1573KT.=1473KTt二1373KU=0.65 0。42图210 15 20 25 30 35 40 45U=。onst，X=eonst时刃=f(。，T。)的关系 厅 0.创护一护.-闷x二0.40答冀10 15加25加35 40 45，图sU一eonst，T。=eonst时刃=f(。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条