1) freely expanding ring
自由膨胀环
1.
Super-high strain rate impact tensile testing data of some resin matrix composite,such as Kevlar,glass and carbon fibers reinforced composites,were obtained by freely expanding ring experiment in which shaping of explosive cylinder and design of sample rings were optimized,and .
通过自由膨胀环实验,得到了一些芳纶纤维、玻璃纤维、碳纤维等增强的树脂基复合材料在超高压应变率下的冲击拉伸试验数据,在实验中应用了简便的应变片电测技术,并优化了装药和试样环的设计。
2) Free expansion
自由膨胀
1.
Strain characteristics of different expansion factors(such as free expansion,confined expansion and effective expansion,etc) and the influential factors are analyzed.
通过对自由条件下的4种不同配合比自应力混凝土和11组不同配合比、不同尺寸的自应力钢管混凝土进行连续观测,讨论了不同条件下混凝土结构所产生的自应力变化规律,分析了自应力混凝土的自由膨胀、限制膨胀和有效膨胀等应变特点及其影响因素。
3) free-expansion rate
自由膨胀率
1.
The results showed that retarder used together with sulfoaluminate expansion agent can reduce restrained-expansion rate of expansion agent, and increase its early stage free-expansion rate and expansion index, as a result reduce its efficient expansion energy.
结果表明:缓凝剂和硫铝酸盐型膨胀剂复合使用时,会降低膨胀剂的限制膨胀率,增大其早期自由膨胀率及膨胀指数,从而降低其有效膨胀能。
2.
The results showed that the synergy effect of retarders used together with superplasticizers can reduce the restrained-expansion rate and free-expansion rate of ulfo-aluminate expansive agents mortar specimens in water or air curing condition,but the expansion indexes of mortar specimens at .
结果表明:缓凝剂与高效减水剂的协同效应会降低硫铝酸盐型膨胀剂在水中养护和空气中养护条件下的限制膨胀率、自由膨胀率,增大膨胀剂砂浆水养28 d的膨胀指数,从而降低了硫铝酸盐型膨胀剂有效膨胀能的利用。
3.
The results showed that superplasticizer used together with sulfo-aluminate expansive agents can reduce restrained-expansion rate of expansive agent,and drop free-expansion rate mixing naphthalene series and amino sulfonic,increase expansion index,so resulting in the reduction of efficient expansion energy of expansive agent.
结果表明:高效减水剂和硫铝酸盐型膨胀剂复合使用时,会降低膨胀剂的限制膨胀率,降低复掺萘系和氨基的自由膨胀率,增大膨胀指数,从而降低其有效膨胀能。
4) free swelling ratio
自由膨胀率
1.
Effect of soil sample preparation on free swelling ratio and its improved measures;
土样制备对自由膨胀率的影响及其改进方法
2.
Free swelling ratio is an important index for the identification and classification of expansive soils,and it s meaningful to research the relationship between the free swelling ratio and the architectural characteristic of expansive soils.
自由膨胀率是膨胀土判别和分类的一项重要指标,研究自由膨胀率特征与膨胀土结构特性关系有着重要意义。
3.
among selling ratio ( δ_(ep) ),swelling force ( P_e), and free swelling ratio ( δ_(er)).
具有膨胀土工程地质性质的粘性土,膨胀试验指标有时会表现为不协调性,膨胀率(δep)、膨胀力(Pe)、自由膨胀率(δef)指标显示不出膨胀性能的一致性。
6) free expansion rate
自由膨胀率
1.
According to the experimental data ,the article makes statistical analysis of the correlation between the free expansion rate and the liquid limit of cohesive soil at Hefei area , brings out a linear equation to work out the free expansion rate with liquid limit, to judge the expansibility of the cohesive soil if combined with the geological characteristics of the engineering.
文章从试验资料出发,对合肥地区粘性土的自由膨胀率与液限的相互关系进行统计分析,建立线性方程,根据方程由液限算出自由膨胀率,结合工程地质特征,可对粘性土的膨胀性进行判定。
补充资料：自由膨胀
分子式：
CAS号：
性质：气体向真空膨胀的过程。“自由”二字是指膨胀时气体不受外界阻碍，所以气体不对环境做功，即-W=0.1843年，焦耳曾设计一套使气体向真空膨胀的仪器。焦耳发现，气体在膨胀前后温度没有变化，因而没有自环境吸入或放出热，即Q=0。根据热力学第一定律可知，气体在膨胀过程中△U=Q+W=0。所以焦耳实验(Joule’s experiment)得出以下结论，在自由膨胀中，气体的内能不变；或者说，气体的内能与体积无关，只与温度有关。后来精确的实验证明，焦耳的结论只对理想气体才是正确的。
CAS号：
性质：气体向真空膨胀的过程。“自由”二字是指膨胀时气体不受外界阻碍，所以气体不对环境做功，即-W=0.1843年，焦耳曾设计一套使气体向真空膨胀的仪器。焦耳发现，气体在膨胀前后温度没有变化，因而没有自环境吸入或放出热，即Q=0。根据热力学第一定律可知，气体在膨胀过程中△U=Q+W=0。所以焦耳实验(Joule’s experiment)得出以下结论，在自由膨胀中，气体的内能不变；或者说，气体的内能与体积无关，只与温度有关。后来精确的实验证明，焦耳的结论只对理想气体才是正确的。
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