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, 2]. Subsequent durability issues with RC structures primarily include tensile strength loss and an increasing risk of brittle failure of steel bars, cracked concrete covers, and deteriorated bond... of the steel bar I was 300 mm. To apply a tensile stress, the end of steel bar I was manufactured as male threads and connected to a hydraulic jack. The compressive strength of concrete was designed......
; 1 Introduction Interest in the use of fiber reinforced polymer (FRP) tendons in lieu of steel bars of prestressed concrete structures increases due to the high-strength, light-mass... instead of fully bonded tendons in beams in order to make FRP-prestressed concrete beams have a high rotation capacity, a high load capacity and a high fatigue-resistant capacity [4-5]. Stainless steel may......
reinforced concrete[J]. Cement and Concrete Composites, 2011, 33(2): 725-734. [11] Chia K S, Zhang M H. Water permeability and chloride penetrability of high-strength lightweight aggregate concrete[J...志码:A 文章编号:1672-7207(2014)11-4000-06 Influence of chloride ions penetration on surface permeability of fly ash incorporated concrete LIU Jun1, 2, XIE......
Crack detection of reinforced concrete bridge using video imageXU Xue-jun(许薛军)1, 2, ZHANG Xiao-ning(张肖宁)1(1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China;2. Administration Bureau for Highway of Guangdong Province, Guangzhou 510075,China)Abstract:With the digital image technology, a crack detection method of reinforced concrete......
, and Durability Mechanics: A Tribute to Zdenek P. Bazant, Austria, 2013: 429-436. [2] HUANG Yue, Hamed E. Buckling of one-way high-strength concrete panels: Creep and shrinkage effects[J]. Journal of Engineering... of Changan University, 2013, 33(2): 56-62. [8] 柯敏勇, 刘海祥, 陈松. 桥用高强混凝土双轴徐变试验研究[J]. 建筑结构学报, 2012, 33(6): 116-122. KE Minyong, LIU Haixiang, CHEN Song. Biaxial creep experiment for high strength concrete in bridge......
Reliability-based service life prediction of existing concrete structures under marine environmentWU Ling-jie(吴灵杰), ZHOU Yong-jun(周拥军), KOU Xin-jian(寇新建), JIANG Meng(蒋萌) (School of Naval Architecture... in the reduction of structural resistance of reinforced concrete structural elements located in marine and other aggressive environments. A study of reinforced concrete structures located at the Fangcheng......
Temperature gradients in concrete box girder bridge under effect of cold waveGU Bin(顾斌)1, CHEN Zhi-jian(陈志坚)2, CHEN Xin-di(陈欣迪)3(1. College of Civil and Transportation Engineering, Hohai University..., China)Abstract:The temperature distributions of a prestressed concrete box girder bridge under the effect of cold wave processes were analyzed. The distributions were found different from those under......
DirectionaHy Solidified High-strength Superalloy DZ22陈荣章,王罗宝,王玉屏摘 要:<正> Alloy DZ22 possesses rather high intermediateand elevated temperature mechanical propertiescomparable with the advanced commercial DS al-loy PWA1422.The alloy composition is based onPWA1422 alloy,only the content ranges of Hf,Cand Zr are changed for systematic study.The pres......
al. Experimental research on high concrete beams reinforced by high-strength bars under static loading and fatigue loading[J]. Journal of Building Structures, 2005(2): 94-100. (编辑 赵俊) 收稿日期...]. China Civil Engineering Journal, 2013(9): 72-82. [4] CHANG Dongli, CHAI Wonkyu. Study on the fatigue strength behavior of reinforced concrete structures[J]. International Journal of Pressure Vessels......
characteristics and manufacturing technology of titanium alloy for aerospace fasteners were studied. Emphasis was made on newly developed high-strength titanium fasteners and material characteristics. Key words: titanium alloy; aerospace fastener; high-strength 由于航空产品工作环境的特殊性以及高可靠性的要求,对紧固件产品也提出更高的性能要求.因此,通常在进行航空紧固件的材料选择时,需要考虑下面一些因素:最大和最小工作温度,环境的腐蚀性,不同材料间的电偶腐蚀,疲劳和冲击载荷等.另外,还需要考虑如何在公开市场上获得这些材料. 钛及其合金由于具有密......
