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   cement matrix composites 的翻译结果: 查询用时:0.193秒
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cement matrix composites
相关语句
  水泥基复合材料
     The First Crack Strength of Fibre Reinforced Cement Matrix Composites
     纤维增强水泥基复合材料的初裂强度
短句来源
     Synthetic macro-fiber reinforced concrete have been used for many years in USA, Japan and so on, and achieved remarkable effect, it provides a development orientation of cement matrix composites in the future.
     粗合成纤维混凝土在美国和日本等国家已有多年的使用历史,其显著的效果已为大量工程实践所证明,它已成为水泥基复合材料的未来发展方向。
短句来源
     Fabric reinforced cement matrix composites with different volume fractions were prepared with the alkali-free glass fiber woven fabric. Three point bending test and analysis of digital photograph of sectional contour were used to study the effect of the volume fraction of the fabric on the flexural property of woven fabric reinforced cement matrix composites.
     采用无碱玻璃纤维机织物,制备了不同体积含量的织物增强水泥基复合材料,通过三点弯曲抗折强度试验和断裂面形貌数码照片分析,研究了织物体积含量对机织物增强水泥基复合材料弯曲性能的影响。
短句来源
  “cement matrix composites”译为未确定词的双语例句
     Effect of volume fraction on the flexural property of fabric reinforced cement matrix composites
     体积含量对织物/水泥复合材料弯曲性能的影响
短句来源
     The results show that as the volume fraction of woven fabric increases from 1% to 5%,there is no obvious change in the load-deflection curves and elastic modulus of the glass fiber woven fabric reinforced cement matrix composites,and the flexural strength in the warp increases from 8.5 MPa to 17.8 MPa,and in the weft,from 8.1 MPa to 17.2 MPa,but the increment disagrees with the mix law of the fiber reinforced polymer matrix composites. The breaking energy increases from 0.53 kJ/m2to 1.89 kJ/m2 and a greater margin of increase is observed.
     研究结果表明,玻璃纤维机织物体积含量从1%上升到5%时,织物增强水泥复合材料全载荷挠度曲线的形状和弹性模量没有明显变化,经向抗折强度从8.5 MPa上升到17.8 MPa,纬向抗折强度从8.1 MPa上升到17.2 MPa,但增加的幅度与聚合物基单向复合材料纵向强度的混合定律不相符,断裂能从0.53 kJ/m2上升到1.89 kJ/m2,且增加的幅度明显增大。
短句来源
  相似匹配句对
     MgLi Matrix Composites
     Mg-Li基复合材料
短句来源
     Resistivity-temperature behavior of carbon-fiber cement-matrix composites
     碳纤维水泥基复合材料的阻温特性
短句来源
     The First Crack Strength of Fibre Reinforced Cement Matrix Composites
     纤维增强水泥基复合材料的初裂强度
短句来源
     Developments of Zinc Matrix Composites
     锌基复合材料研究进展
短句来源
     Research of Electrical Conductivity of Carbon Fiber Cement-matrix Composites (CFCC)
     碳纤维-水泥基导电复合材料导电性能的研究
短句来源
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  cement matrix composites
Admixtures such as short fibers are effective for enhancing the electrical behavior and for providing p-type and n-type cement matrix composites.
      
For glass fibre-cement matrix composites, an accelerated cure condition promotes rapid hydration of cement and densification of the matrix.
      
Electrical property measurements (DC conductivity, impedance spectroscopy) were employed to determine the "intrinsic conductivities" of short conductive fibers in cement matrix composites.
      


In this paper,according to linear elastic fracture mechanics and fibre spacing theory, a fictitious crack model is proposed for fibre reinforced cement matrix composites. On the basis of the model,the formula for calculating the first crack strength of cement composites is established, that is,first crack strength ratio rc,is the function fo fibre volume v, and critical fibre volume v10. meanwhile,the flexural behaviour of polypropylene fibre reinforced cement and fibre hybrid-reinforced...

In this paper,according to linear elastic fracture mechanics and fibre spacing theory, a fictitious crack model is proposed for fibre reinforced cement matrix composites. On the basis of the model,the formula for calculating the first crack strength of cement composites is established, that is,first crack strength ratio rc,is the function fo fibre volume v, and critical fibre volume v10. meanwhile,the flexural behaviour of polypropylene fibre reinforced cement and fibre hybrid-reinforced cement are studied through experiments. The results obtained indicate that the proposed model is in good conformity to the experimental results.

本文根据线弹性断裂力学及纤维间距理论对纤维增强水泥基内部存在的微裂缝形状提出假设,并在此基础上导出了估算复合材料初裂强度的计算公式,即初裂强度比γ_(cr)是纤维体积含量γ_f及临界纤维体积含量γ_(f0)的函数。同时还对聚丙烯纤维增强砂浆和聚丙烯与钢纤维混杂增强砂浆的弯曲性能进行了试验研究。

In this paper,the influences of mixture method,molding method,plasticizing agent(dispersing agent)and weight fraction of carbon fibers on the electrical conductivity of carbon fiber cement-matrix composites were discussed.The results indicate that the same mixture is the most suitable method for this research,plasticizing agent makes the electrical resistivity increase under the same condition;up to now, casting molding is still better than extrusion molding in making carbon fiber cement-matrix...

In this paper,the influences of mixture method,molding method,plasticizing agent(dispersing agent)and weight fraction of carbon fibers on the electrical conductivity of carbon fiber cement-matrix composites were discussed.The results indicate that the same mixture is the most suitable method for this research,plasticizing agent makes the electrical resistivity increase under the same condition;up to now, casting molding is still better than extrusion molding in making carbon fiber cement-matrix composites;the electrical resistivity of CFCC decreases to 3.27×10 3?Ω·cm from 1.1×10 5?Ω·cm with weight fraction of carbon fibers increasing from 0 to 0.6%,so it is possible that this composite can be used to manufacture electromagnetic interference shielding,electrothermal equipment and electrostatic protecting.

研究先掺法、同掺法和后掺法三种搅拌工艺、浇铸成型和挤出成型两种成型工艺、增塑剂 (分散剂 )以及碳纤维掺量对水泥基导电复合材料导电性能的影响。结果表明 ,较适宜的搅拌工艺为同掺法 ;增塑剂的加入使试样的电阻率下降幅度减小 ;目前振实成型制备的试样电性能优于挤出成型制备的试样 ,而要想通过挤出成型制备电性能较好的试样 ,也必须选择适宜增塑剂 ,并尽量减小用量 ;掺 0~ 0 .6 %碳纤维的水泥基材料 ,其电阻率由 1.1× 10 5Ω·cm下降到 3.2 7× 10 3Ω·cm ,可以用作电磁屏蔽材料、防静电材料和电热材料

Using cement as matrix of piezoelectric smart composites the mismatch problem of smart materials and concrete structure can be solved. The effects of the particle size and mass fraction of 0.08 Pb(Li_(1/4)Nb_(3/4))O_(3)·0.47PbTiO_(3) ·0.45PbZrO_(3) (\ on piezoelectric and dielectric properties of the cement matrix composites were studied. The results show that the piezoelectric and dielectric properties of the composites increase rapidly with the increase of particle size of P(ZTNL), but the electromechanical...

Using cement as matrix of piezoelectric smart composites the mismatch problem of smart materials and concrete structure can be solved. The effects of the particle size and mass fraction of 0.08 Pb(Li_(1/4)Nb_(3/4))O_(3)·0.47PbTiO_(3) ·0.45PbZrO_(3) (\ on piezoelectric and dielectric properties of the cement matrix composites were studied. The results show that the piezoelectric and dielectric properties of the composites increase rapidly with the increase of particle size of P(ZTNL), but the electromechanical coupling factor K_(p )(planar) and K_(t )(thickness vibration)of the composites decrease. The K_(p )and K_(t)are nearly independent of the size when P(ZTNL) particle size reaches to a certain value. The optimum P(ZTNL) particle size is about 100 μm. With the increasing of P(ZTNL) mass fraction,the piezoelectric and dielectric constants of the composites increase, and the dielectric loss drops down quickly. The composites with better piezoelectric performances can be obtained when the mass fraction of P(ZTNL) content 70%.K_p and K_t of the composite with 85% P(ZTNL) are 28.54% and 28.19% respectively.The dielectric constants of the composites are almost unchanged at -30-100 ℃,which exhibit good dielectrictemperature stability.

采用水泥作为压电复合材料的基体,可有效解决机敏材料与混凝土母体结构材料之间的相容性问题。用压制法制备了铌锂锆钛酸铅[0.08Pb(Li1/4Nb3/4)O3·0.47PbTiO3·0.45PbZrO3,简称P(ZTNL)]/硫铝酸盐水泥复合材料,分析讨论了P(ZTNL)颗粒粒度和含量对水泥基压电复合材料的压电性和介电性的影响。结果表明:随着P(ZTNL)粒度的增大,复合材料的压电性和介电性均随之增大,但机电耦合系数则减小,当达到一定值后,机电耦合系数趋于稳定。综合分析表明,在所研究的材料中P(ZTNL)粒度应为100μm左右为宜。随着P(ZTNL)含量的增加,压电复合材料的压电常数和介电常数均增大,而介电损耗则减小,只有当P(ZTNL)质量分数超过70%时,水泥基压电复合材料才显示出较好的压电性能。P(ZTNL)的质量分数为85%时,压电复合材料的平面机电耦合系数KP和厚度伸缩机电偶合系数Kt分别为28.54%和28.19%。在-30~100℃范围内,水泥基压电复合材料的介电常数几乎不变,表现出优良的介电稳定性。

 
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