ageing crack造句

• Effect of mineral admixture on early age cracking of concrete
  矿物掺和料对混凝土早期开裂的影响
• Aged cracked gasoline
  陈化的裂化汽油
• The ring test result shows that tendency of concrete cracking is consistent with shrinkage and veritifies early - age shrinkage is responsible for the concrete early - age crack
  通过圆环法混凝土抗裂试验，验证了混凝土收缩与开裂趋势的一致性，进一步证明了早期收缩对混凝土早期裂缝的重要影响。
• During the technology development of modem concrete , concrete structure crack ( especially early - age crack ) becomes more and more serious and has been one of main research directions of civil engineering
  随着现代混凝土技术的发展，混凝土结构裂缝呈现越来越严重的趋势，尤其是早期裂缝，已成为土木工程界一个重要研究方向。
• Because of its many excellent advantages , hpc has come to be used in a wide range . but the existed projects show it ' s weakness , such as the brittleness and the tendency to early age cracking of hpc is more serious and sensitive than ordinary performance concrete ( opc )
  高性能混凝土由于其优异的性能得到了越来越广泛的应用，但已有的工程实践中也相继暴露了hpc的一些弱点，如高性能混凝土的脆性和易于收缩开裂的倾向可能比普通混凝土更严重。
• Early age cracking of concrete has re - emerged as an important issue all over the world in recent years . the stress , due to restrained volume change related to thermal deformation and shrinkage in the early age concrete , is the main driving force for the deleterious cracking in the construction stage . during the development of the stress , creep , a very important property of concrete , is always developing . creep contributes to 40 ? - 50 ? reduction of the elastically induced stress in the restrained specimen . ring test , a qualitative test , can provide information to assess the potential for cracking of different concrete . an overview of ring test developed in recent years and mechanism of uniaxial tensile creep test is described in this paper at first . then , an innovative test equipment based on ring test is outlined
  近年来混凝土早期裂缝问题再次引起全球工程界的广泛关注.早期混凝土由于体积变形受到约束而产生的应力是导致混凝土开裂的主要因素.在混凝土应力发展的同时,混凝土徐变也在同时发生着变化.有研究表明,徐变能减少40 ? - 50 ?的早期应力.圆环试验是用于定性评价混凝土材料抗裂性能的试验方法之一.本文首先分析了圆环试验和单轴拉伸徐变试验的原理,创造性地将圆环试验用于测量早期混凝土的干缩徐变,并设计了试验方案
• The results show that the order from large to small of the early - age crack resistance of concretes with high content mineral admixtures is high performance expensive concrete with fiber > high performance concrete with fiber > high performance concrete with hybrid fibers > high performance expensive concrete with hybrid fibers > high performance expensive concrete
  结果表明，大掺量矿物掺合料混凝土的早期抗裂性大小顺序为：纤维增强高性能膨胀混凝土纤维增强高性能混凝土混杂纤维增强高性能混凝土混杂纤维增强高性能膨胀混凝土高性能膨胀混凝土。