美国混凝土协会期刊
美国混凝土协会期刊
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Evaluation of Shear and Diagonal Tension in Plain Concrete
作者：Cristy Guenther Helmick , Saadet Toker-Beeson , Jennifer Eisenhauer Tanner
来源：[J].Concrete International, 2016, Vol.38 (1)ACI
摘要：Experimental and analytical work was conducted to investigate the Iosipescu test as a means of measuring tensile capacity of various concrete mixtures. The study compared results from flexural and splitting tensile strength tests against data obtained using the Iosipescu beam tes...
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    Multi-Span Members with Unbonded Tendons: Ultimate Strength Behavior
    作者：Marc Maguire , William N. Collins , Kedar R. Halbe ...
    来源：[J].Structural Journal, 2016, Vol.113 (2)ACI
    摘要：Many researchers have proposed empirical methods to predict the strand stress increase at ultimate, relying heavily on simple span test data with little consideration for continuous members. The research team fabricated four two-span representative slab specimens. Tendon stresses...
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      Punching Shear in Post-Tensioned Flat Slabs with Shear Reinforcement: Codes and Tests
      作者：Aless , ra L. Carvalho , Guilherme S. Melo ...
      来源：[J].Structural Journal, 2016, Vol.113 (2)ACI
      摘要：The experimental punching capacities results of 27 punching tests on 160 to 200 mm (6.30 to 7.87 in.) deep post-tensioned slabs—all but three of them containing stud-rail shear reinforcement—are compared with resistances calculated by the methods of ACI 318 and Eurocode 2. T...
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        Compatible Datum Temperature and Activation Energy for Concrete Maturity
        作者：Chang Hoon Lee , Kenneth C. Hover
        来源：[J].Materials Journal, 2016, Vol.113 (2)ACI
        摘要：Maturity methods are used to predict strength or other mechanical properties of a concrete mixture for a given moisture availability as a function of time and temperature. Temperature sensitivity of a mixture is characterized by datum temperature for the Nurse-Saul (NS) method, a...
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          Comparative Evaluation of Transport Properties of Shotcrete Compared to Cast-in-Place Concrete
          作者：Lihe Zhang , Dudley Morgan , Sidney Mindess
          来源：[J].Materials Journal, 2016, Vol.113 (3)ACI
          摘要：The question is sometimes asked: “How does the durability of shotcrete compare to that of cast-in-place concrete?” The durability of shotcrete and concrete structures is strongly influenced by their transport properties. While considerable data are available regarding the tr...
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            A Methodology to Evaluate Elastic Modulus of Lightweight-Aggregate Concrete
            作者：F. S. Barbosa , M. C. R. Farage , A.-L. Beaucour ...
            来源：[J].Materials Journal, 2016, Vol.113 (1)ACI
            摘要：This work proposes a methodology to evaluate the elastic modulus of lightweight-aggregate concretes. To this end, an analytical formula is achieved by curve-fitting experimental results from 135 concrete samples made of 45 different mixtures. The validation of the proposed method...
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              Shear Response of Prestressed Thin-Webbed Continuous Girders
              作者：Michael P. Collins , Liping Xie , Boyan I. Mihaylov ...
              来源：[J].Structural Journal, 2016, Vol.113 (3)ACI
              摘要：While different design codes provide similar guidance for the flexural design of prestressed thin-webbed continuous girders, the shear design provisions differ greatly. This paper investigates these discrepancies with the help of 11 experiments and a number of analytical studies....
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                Anchorage Models for Reinforced Concrete Beam-Column Joints under Quasi-Static Loading
                作者：Ricardo Costa , Paulo Providência , Alfredo Dias
                来源：[J].Structural Journal, 2016, Vol.113 (3)ACI
                摘要：Reinforced concrete beam-column joints are a major source of deformation of reinforced-concrete-framed structures, which often cannot be neglected. The most important sources of deformation of these joints are shear deformation and slip of the longitudinal reinforcing bars of bea...
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                  Effect of Dosage of Fly Ash and NaOH on Properties of Pisha Sandstone-Based Mortar
                  作者：Changming Li , Tingting Zhang , Lijiu Wang
                  来源：[J].Materials Journal, 2016, Vol.113 (2)ACI
                  摘要：This paper investigates the effectiveness of NaOH concentration and fly ash dosage on the mechanical properties, pore structure, water resistance, and water permeability of a new mortar manufactured by using a special kind of sandstone and fly ash. Mechanical properties were...
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                    Cyclic Loading Test for Cast-in-Place Concrete-Filled Hollow Precast Concrete Columns
                    作者：Chang-Soo Kim , Woo-Young Lim , Hong-Gun Park ...
                    来源：[J].Structural Journal, 2016, Vol.113 (2)ACI
                    摘要：Two types of cast-in-place concrete-filled hollow precast concrete columns (HPCC1 and HPCC2) were developed to reduce the lifting weight of large precast concrete (PC) columns and to enhance the structural integrity of beam-column joints. To produce the hollow core section, prefa...
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