potential shrinkage 中文意思是什麼
potential shrinkage
解釋
潛在收縮-
Pet / mmt fiber is a kind of potential tyre cord with high modulus and low thermal shrinkage
如能進一步完善， pet mmt納米復合纖維完全可以製成高模低收縮的輪胎簾子線。 -
Abstract : during construction of the capital international airport ' s garage building project, the c50 and over c60 high performance concrete has been adopted for its construction. for the aim of 1, to get a maximum reduction of cement comsumption 2, to lower the concrete ' s hydration heat 3, to reduce concrete ' s shrinkage and cracks, and 4, to promote concrete ' s performance, a high quality chilled blast furnace superfine slag has been adopted as an admixture. furthermore, the adoption of some other minerals as the admixtures to get a high performance concrete has been carried out. as a result, these procedures and operations would have developed considerably the potential activity of concrete, and eventually the multiple performance and multiple function of concrete would have been improved and promoted. in conclusion a good result has been achieved in practice
文摘:首都國際機場停車樓工程中，採用c50及c60以上高性能混凝土，為最大限度減少水泥用量，降低水化熱，減少收縮與裂縫，提高混凝土的性能，優選了有效成分含量高、質量好的水淬高爐礦渣磨細后單獨摻用，或再與其他礦物組分復合作為高性能混凝土的摻合料，以充分發揮礦渣的潛在活性，從而使混凝土的多項性能得到極大的改善和提高，並在實際應用中取得了良好的效果。 -
During construction of the capital international airport ' s garage building project, the c50 and over c60 high performance concrete has been adopted for its construction. for the aim of 1, to get a maximum reduction of cement comsumption 2, to lower the concrete ' s hydration heat 3, to reduce concrete ' s shrinkage and cracks, and 4, to promote concrete ' s performance, a high quality chilled blast furnace superfine slag has been adopted as an admixture. furthermore, the adoption of some other minerals as the admixtures to get a high performance concrete has been carried out. as a result, these procedures and operations would have developed considerably the potential activity of concrete, and eventually the multiple performance and multiple function of concrete would have been improved and promoted. in conclusion a good result has been achieved in practice
首都國際機場停車樓工程中，採用c50及c60以上高性能混凝土，為最大限度減少水泥用量，降低水化熱，減少收縮與裂縫，提高混凝土的性能，優選了有效成分含量高、質量好的水淬高爐礦渣磨細后單獨摻用，或再與其他礦物組分復合作為高性能混凝土的摻合料，以充分發揮礦渣的潛在活性，從而使混凝土的多項性能得到極大的改善和提高，並在實際應用中取得了良好的效果。 -
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
近年來混凝土早期裂縫問題再次引起全球工程界的廣泛關注.早期混凝土由於體積變形受到約束而產生的應力是導致混凝土開裂的主要因素.在混凝土應力發展的同時，混凝土徐變也在同時發生著變化.有研究表明，徐變能減少40 ? - 50 ?的早期應力.圓環試驗是用於定性評價混凝土材料抗裂性能的試驗方法之一.本文首先分析了圓環試驗和單軸拉伸徐變試驗的原理，創造性地將圓環試驗用於測量早期混凝土的干縮徐變，並設計了試驗方案 -
All concrete structures are exposed to volume changes caused by hydration reactions in the early age. if the volume changes are restrained, stresses is generated which will cause cracking when it overcomes the tensile strength. as the mechanical properties of early age concrete vary with time, especially the creep degree depends on the time elapsed and the time at loading, to calculate the stress of concrete structure is a complex nonlinear problem. the finite element method ( fem ) can take account of the evolution of the stiffness properties, the development of thermal strain, creep, shrinkage and so on. in this paper, a general approach for numerically simulating this type of behaviour is presented firstly. then, how to solve this problem is introduced by the general finite element software ansys using the initial stress method. finally, a detailed description of an example calculation that demonstrates the potential of the numerical simulation strategy follows
早期混凝土由於水化反應都會產生體積變化.如果體積變形受到約束就會產生應力，一旦超過混凝土的抗拉強度就會產生裂縫.由於早期混凝土的力學性能是隨時間變化的，特別是徐變，它不僅與加載時間有關而且同時隨齡期而變化，因此計算早期混凝土結構應力是較為復雜的問題.有限單元法不僅可以考慮混凝土剛度的變化，而且可以考慮溫度、徐變、收縮等因素.本文利用初應力法對通用有限元軟體ansys進行了二次開發，通過工程實例計算了高層建築地下室側墻早期混凝土應力的變化過程，並提出了相應的抗裂措施
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