pp fiber rope strengthening of concrete members

... center of bar to extreme tension fiber, in modulus of elasticity of concrete, ksi modulus of elasticity of reinforcement, ksi effective modulus of elasticity of steel to that of concrete modulus of ... the well-known effective moment of inertia concept Both of these approaches appear to be acceptable for the analysis of onedimensional members CRACKING OF CONCRETE MEMBERS IN DIRECT TENSION - Layer ... of concrete, psi stress in reinforcement, ksi steel stress after crack occurs, ksi compressive strength of concrete, psi tensile strength of concrete, psi the ratio of modulus of elasticity of...

Ngày tải lên: 24/10/2014, 17:40

... structures Office building - cantilever roof and floor slabs Daily temperature changes caused deflections of about one inch at the cantilever ends of roof slabs in a four-story building constructed of ... = width of beam D = dead load E = modulus of elasticity h = depth of member, blacktop thickness I = moment of inertia I cr = moment of inertia at cracked section Ie = effective moment of inertia ... connection of the exterior walls (for horizontal loads) was made when the edges of the roof were in a low position due to the effects of diurnal solar heating During service the effect of solar...

Ngày tải lên: 24/10/2014, 22:01

... Basic Description of System of Application Factors 139 Table 3-22 Properties of Fibers and Matrices for Prediction of Strength and Modulus 141 Table 3-23 Mean and COV of Ratio of Tested Values ... Values Predicted Using Properties of Fiber and Matrix for Strength 142 Table 3-24 Mean and COV of Ratio of Tested Values to Values Predicted Using Properties of Fiber and Matrix for Modulus ... 4-3 Histogram of Number of Girders 185 Figure 4-4 Histogram of Deck Width 185 Figure 4-5 Plot of Convergence of Monte Carlo Results as a Function of the Number of Trials ...

Ngày tải lên: 14/11/2014, 13:32

... 97 LIST OF TABLES Table The properties of PBO fiber [6] 12 Table 2 Comparison of mechanical properties with other types of fiber 13 Table 3.1 Characteristics of the PBO mesh ... PBO fibers represent the new generation of super fibers with ultra-high resistance and high tensile strength The properties of PBO fiber are reported in Table Table The properties of PBO fiber ... 2006), the properties of PBO fiber has the highest tensile strength and modulus as reported in Table 13 Table 2 Comparison of mechanical properties with other types of fiber Type of fiber Tensile...

Ngày tải lên: 12/05/2016, 15:40

... modifications of HSFs in different tissues and organs during development of an organism or differentiation of certain cell types This lack of knowledge severely hampers the understanding of the physiological ... deletion of which renders HSF1 constitutively trimeric [19,20] All HSFs bind DNA sequences that are called heat shock elements (HSEs) and are composed of an array of inverted repeats of the pentamer ... of the HSEs [23,25] The precise composition of an HSE can also determine the state of activation required of a specific HSF to induce transcription of its target genes [21,24] This flexibility...

Ngày tải lên: 18/02/2014, 04:20

... by means of a process of ~ inmtRntlat~nn OF the deflnition the translation of the de/initlon f~'om a set of criteria for satisfying the definition into an e x e m p l a r y instance of the concept ... (CI, C2), and ~wo instances of PROPERTY (06, 09) were used The value of MAKEFULLLIST shows the survivors of STAGEI The value of BGO shows the single valid instance of a BREORGANIZATION that can ... (TRN~S 1"2) ( X (TRANSFEROR2 AOENTOF) T ) ( X (TRANSPRQP~ OBJECTOF) T ) ( X (TRANSFEROR2 OLDONt4ERQF) T ) ( X (TRANSFERORt NEWOWNEROF) ~ ) I) the transformation of definitions into the corresponding...

Ngày tải lên: 21/02/2014, 20:20

... 50 “Profile of a dream team”                 Works toward a common goal Develops its members skills Efficiently uses its time and talents Embraces the diversity of its members ... Stages of Group Development  Forming – scope of task and approach Everyone is nice and polite  Storming – dealing with group conflict Real issue now being addressed  Norming – rules of engagement ... outweigh the needs of the few, or the one.“ (See the “10 traits of an effective team player” in the Resource Library.) 16 The Thrill of Team Building #1 Building great teams is one of two most rewarding...

Ngày tải lên: 19/03/2014, 11:50

... with and skew the outcome of interventions (Engel and Solomon 1997) The role of policies Policy support of innovation is not the outcome of a single policy but of a set of policies that work together ... patterns of trust, and the existence of a culture of innovation • Patterns of interaction, with an emphasis on networks and partnerships, inclusion of the poor, and the existence and functions of potential ... diverse set of organizations from the public and private sector actively engaged in a sector? • Is the range of actors appropriate to the nature of the sector, the stage of development of the market,...

Ngày tải lên: 29/03/2014, 08:20

... Ngõ điều khiển OFF trạng thái Light ON ON trạng thái Light OFF Trường hợp cài đặt độ nhạy Max Cài đặt switch lựa chọn chế độ đến chế độ Trường hợp : Nhấn nút ON/OFF từ ON sang OFF đối tượng phát ... từ xa đến mức Low, cài đặt ngõ vào OFF để cài đặt độ nhạy từ xa đến mức Low) Trường hợp : Nhấn nút ON/OFF từ OFF sang ON đối tượng phát (Hoặc cài đặt ngõ vào OFF để cài đặt độ nhạy từ xa đến mức ... từ xa Ngõ vào OFF cài đặt độ nhạy từ xa SW1 (Ngõ vào ON cài đặt độ nhạy từ xa): SW1 ON OFF thay cho cách thức nút cài đặt độ nhạy SW2 (Ngõ vào OFF cài đặt độ nhạy từ xa): SW2 ON OFF thay cho cách...

Ngày tải lên: 10/04/2014, 19:33

Ngày tải lên: 01/05/2014, 21:25

... with specification 104 Points of supervision 23 Quality control of site produced concrete 108 Precast concrete 109 Applications of precast concrete 112 Deciding upon supplier 114 vi Standards Finishes ... Advantages of precasting 132 Appearance of precast concrete 134 Trial erection or mock-up 135 The way up of casting 135 Joints and connections in precast concrete 136 Erection of precast concrete ... Specification Status of suppliers Approved members of QSRMC can be expected to produce and supply prescribed and designed mixes to BS 5328 For a period pending the introduction and approval of QSRMC’s...

Ngày tải lên: 31/05/2014, 02:04

... Position of buildings on site, height of structure; Location of largest bulk of concrete; Duration of concreting operations; Means of transporting concrete on site As regards the scale of operations, ... must ensure readymixed concrete has been approved and should check the status of the supplier in terms of acknowledged Quality Assurance schemes 9 10 Storage of materials Appropriate sums will ... available supply and decisions can be taken regarding smoothing of the demand by reprogramming certain activities or by introducing further supplies of concrete from a readymixed concrete supplier...

Ngày tải lên: 31/05/2014, 02:05

... triangular chunk of concrete at the outer corner of the joint after the appearance of a diagonal crack The strength of such a knee joint could be as low as 17% of the strength of the governing ... Professor Hsu authored numerous research papers on shear and torsion of reinforced concrete and published two books: “Unified Theory of Reinforced Concrete (1993) and “Torsion of Reinforced Concrete ... compatibility equations of a member (relating angle of twist to the shear strain, and to the curvature of concrete struts), as well as the softened stress–strain curve of concrete, Hsu and Mo (1985a)...

Ngày tải lên: 07/06/2014, 00:49

... unsupported length of column * Much of the material of this chapter was taken from Duan, L and Chen, W F., Chapter 17: Effective length factors of compression members, in Handbook of Structural Engineering, ... modulus of elasticity of materials for lacing bars; Eb is modulus of elasticity of materials for batten plates; Ad is cross-sectional area of all diagonals in one panel; Ib is moment inertia of all ... is moment inertia of one side of main components taken about the centroid axis of the flange in the buckling plane; a, b, d are height of panel, depth of member, and length of diagonal, respectively;...

Ngày tải lên: 08/07/2014, 12:20

... downstream sliding of rigid concrete gravity dams subjected earthquake loads The main menu of DAS program is showed in figure Figure The main menu of DAS program Verification of model As the verification, ... Earthquake-Induced Base Sliding of Concrete Gravity Dams; ASCE Journal of Structural Engineering, 117 (12): 3698-37, 1991 Ani K Chopra Dynamics of structures: Theory and applications to Earthquake ... coefficient of static friction at the dam-foundation interface was 0.72 The mass of the dam model was 186 kg and the height of the water in the tests was 0.95m The input motion was a sine function of...

Ngày tải lên: 21/07/2014, 17:20

... following upper bound Theorem 10 If G is the line graph of a multigraph, then χ(G) ≤ max ω(G), 7∆(G) + 10 Proof Suppose not and choose a counterexample G with the minimum number of vertices ... journal of combinatorics 18 (2011), #p145 Proof of Theorem Suppose the theorem is false and choose a counterexample F minimizing ∆(F ) By Brooks’ Theorem we must have χ(F ) = ∆(F ) Suppose ∆(F ... set, Journal of Graph Theory 66 (2011), no 1, 32–37 [18] B Reed, ω, ∆, and χ, Journal of Graph Theory 27 (1998), no 4, 177–212 [19] , A strengthening of Brooks’ theorem, Journal of Combinatorial...

Ngày tải lên: 08/08/2014, 14:23

... plain concrete application Mass application of concrete for manufacturing of reinforced concrete constructions Application of concrete for manufacturing of prestressed and precast reinforced concrete ... worker of science and technics of Ukraine, academician of Academy of Civil Engineering of Ukraine, Doctor of Technical Science, Professor, Head of Department of Building Material Science of National ... 4.4 Influence of terms and duration of hardening concrete 4.5 Kinds of strength Tests for concrete strength Deformations of concrete 5.1 Concrete deformations at short-term load 5.2 Concrete deformation...

Ngày tải lên: 09/08/2014, 14:21

... distribution of entrained-air voids in concrete structure Accelerator of sett ing time Accelerator of hardening Retarder Shorten the time of sett ing Increase the rate of hardening of concrete with ... Radiat ionprot ective concrete, White and Coloured concrete 23 1.2 Binders Classification Nature of binding properties Concrete can be produced on the basis of all types of glues which have adhesion ... high and low – density concrete, Exploitation purpose Properties of aggregates Concrete for must conform to the hydrotechnical, road and concrete properties other kinds of construction 30 Percentage...

Ngày tải lên: 09/08/2014, 14:21

... gradient of speed of deformation during flow 41 a b τmax τmax Fig 2.1 Change of viscidly-plastic properties of concrete mixture depending on tensions: a – change of structural viscosity; b – change of ... (2.7-2.9): d – size of particles of the given fraction of aggregate; D – maximum particle-size of aggregate; A – coefficient equal 8-12 depending on the kind of aggregate and plasticity of concrete mixtures; ... given parameter in the sum of volumes of the aggregates mixed up 50 2.3 Consolidation (compaction) concrete Values of properties Achievement of necessary high-quality concrete is possible only...

Ngày tải lên: 09/08/2014, 14:21

... criterion of efficiency at the complete expense of resources for achievement of purpose 67 Some structural criteria of properties of concrete Structural criteria Density concrete (d) of General ... Kinds of optimization tasks (from V.Voznesensky): a – achievement of the set level of criterion of efficiency (J) at the minimum expense of resources; b – achievement of maximal level of criterion ... model of structure of cement stone 60 a b Fig.3.7 Change of capillary porosity in cement paste (stone) in the conditions of proceeding hydration of cement: a- Level of hydration = 0.3; b – Level of...

Ngày tải lên: 09/08/2014, 14:21