Standard method of detailing structural concrete concrete society
Standard Method of Test for Slump Loss of Portland Cement Concrete ppsx
... 3.5.2 Isolate the concrete from vibration for the duration of the test 3.5.3 Obtain concrete from the simulated in-place concrete and perform slump every hour until slump has reached the ... in-place slump Recover the simulated in-place concrete with plastic after each slump test 3.6 Part B Mixer Truck 3.6.1 Discharge approximately cubic foot of test batch concret...
standard method for determining fire resistance of concrete and masonry construction assemblies
... 1.1—Scope This standard describes acceptable methods for determining the fire resistance of concrete and masonry assemblies and structural elements including walls, floor and roof slabs, beams, ... types of concrete, or of lay- Fig 2.1 Fire resistance of two-layer concrete walls, floors and roofs ers of concrete, concrete masonry and/ or clay mas...
Báo cáo nghiên cứu khoa học: "Analysis of Early-age cracking in restrained ring specimens of high performance concrete using finite element method" pdf
... the two rings are constantly in contact and as the concrete ring dies, strain gages monitor the steel ring strain In the finite element analysis the strain information was used as input using the ... the ring specimens using ANSYS software were modeled by cubic threedimensional as shown in Fig The elements of steel ring and concrete ring are continuous at nodes...
standard practice for the use of shrinkage- compensating concrete
... counterbalanced by the dead weight of the slab itself STANDARD PRACTICE FOR SHRINKAGE -COMPENSATING CONCRETE The function of the top reinforcement is to balance the restraint of the subgrade, in ... relieves the expansive strains caused by the initial expansion of the shrinkage -compensating concrete 1.3—Scope and limits This standard practice is dire...
recent approaches to shear design of structural concrete
... mechanisms of shear transfer: 1) shear stresses in uncracked concrete, that is, the flexural compression zone; RECENT APPROACHES TO SHEAR DESIGN OF STRUCTURAL CONCRETE 445R-27 Fig 4.3—Comparison of Walraven’s ... effects of axial loading and the contribution from vertical stirrups Vs RECENT APPROACHES TO SHEAR DESIGN OF STRUCTURAL CONCRETE 445R-5 Fig...
guide for the use of preplaced aggregate concrete for structural and mass concrete applications
... view of the lack of any performance history, the use of PA concrete was limited to the repair of bridges and tunnel linings to extend their usefulness After extensive laboratory testing, the Bureau ... requirements limit the amount of fine aggregate (sand) that can be used in the grout For PA concrete for use in beams, columns, and thin sections, the...
Structural detailing in concrete
... 1/8 in 1/8 in or proportion 1/8 in. , 3/16 in. , 3/4 in 1/8 in. , 1/4 in 1/2 in. , 3/4 in. , in 12 in. , in 1/2 in. , 3/4 in. , in 12 in. , in 1/8 in. , 3/16 in. , 1/4 in 3/4 in. , in. , 12 in. , in 1/2 in. , ... REQUIREMENTS FOR STRUCTURAL DETAILING IN CONCRETE LAYOUT OF AN EXISTING BUILDING (BASED ON ACI/PCI/ASCE CODES) SHEET NO I.7 13 STRUCTURAL...
Numerical analysis of externally prestressed concrete beams part 2
... surface of cross section -118- 900 21 50 21 50 27 5 D2 D1 1700 25 0 P 325 P 1800 1700 100 520 0 Beam s A1 and A2 21 50 21 50 900 27 5 P D2 D1 1700 1800 375 325 P 1700 520 0 Beam s B1 21 50 21 50 900 27 5 D1 D2 ... e2θ ; * v1 = v1 ; * v2 = v2 ; θ 1* = θ ; * 2 = 2 ; where e1 and e2 are the eccentricities of cable at the deviators and 2, respectively -114- (6.7) u2*,v2*,θ 2* Ca...
Numerical analysis of externally prestressed concrete beams part 1
... [K 11 ] 1 ({ΔF1 } + {R1 } − [K 21 ]{ΔU }) (2.22) {ΔF2 } = [K 22 ]{ΔU } + [K12 ]{ΔU } − {R2 } (2.23) K 12 ⎤ K 22 ⎥ ⎦ ⎧ ΔU ⎫ ⎬ ⎨ ⎩ΔU ⎭ (1) ⎧ ΔF ⎫ ⎧ R ⎫ = ⎨ 1 +⎨ 1 ⎩ΔF2 ⎭ ⎩ R2 ⎭ ⎡ K 11 ⎢K ⎣ 21 Solving ... (3 .18 a) 12 K 6K 12 K 6K ⎤ ⎡ ⎢0; − L3 ; − L2 ; 0; L3 ; − L2 ⎥ ⎣ ⎦ 12 K 1+ L2 (3 .18 b) ⎡ 12 ⎛ 12 K ⎞ 6 12 ⎛ 12 K ⎞ ⎤ 0; − + x; ⎜ − − ⎟ + x; 0; − x; ⎜ − ⎟ + x⎥ ⎢ L⎠ L ⎦ 12 K L...
ACI structural engineering handbook 04 structural concrete design
... Structural Concrete Design 4.1 4.2 4.3 4.4 4.5 Properties of Concrete and Reinforcing Steel Properties of Concrete • Lightweight Concrete • Heavyweight Concrete • High-Strength Concrete ... and Mixing Concrete Proportioning Concrete Mix • Admixtures • Mixing Flexural Design of Beams and One-Way Slabs Reinforced Concrete Strength Design • Prestressed Concrete Streng...
INTERNATIONAL STANDARD Microbiology of food and animal feeding stuffs — Horizontal method for the detection of Salmonella spp docx
... v INTERNATIONAL STANDARD ISO 6579:2002(E) Microbiology of food and animal feeding stuffs — Horizontal method for the detection of Salmonella spp WARNING — In order to safeguard the health of ... Members of ISO and IEC maintain registers of currently valid International Standards ISO 6887-1, Microbiology of food and animal feedin...
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