guide for evaluation of concrete structures prior to rehabilitation

... are encouraged to refer to Gibsons [1] and Harary [2] for more detailed descriptions of the theory. 2.1 Definitions A graph consists of a set of vertices (points) together with a set of edges or ... 2 to the sum of the product i ì L i . Hence, i iL i = 2e. (2.7) Let v k denote the number of vertices of degree k, namely,v 2 denotes the number of vertices of degree two,...

Ngày tải lên: 17/12/2013, 13:15

... the nature of connection among various links of a kinematic chain is called the structural analysis or topological analysis. To facilitate the analysis, several methods of repre- sentation of the kinematic ... Creation of Mechanisms According to Kinematic Structure and Function, Journal of Environmental and Planning B, 6, 375–391. [7] Freudenstein, F. and Yang, A.T.,...

Ngày tải lên: 17/12/2013, 13:15

... Symbol Number of vertices v Number of links n Number of edges e Number of joints j Number of vertices of degree iv i Number of links having i joints n i Degree of vertex id i Number of joints on ... Degrees of Freedom The degrees of freedom of a mechanism is perhaps the first concern in the study of kinematics and dynamics of mechanisms. The degrees of freedom of...

Ngày tải lên: 17/12/2013, 13:15

... number of gear pairs is equal to the number of independent loops; the number of turning pairs is equal to the number of links diminished by one; and the number of degrees of freedom is equal to the ... graph of n vertices. However, some of the graphs may be rejected due to violation of the structural characteristics, whereas others may be isomorphic to one another....

Ngày tải lên: 17/12/2013, 13:15

... article as: Wybranski et al.: Value of diffusion weighted MR imaging as an early surrogate parameter for evaluation of tumor response to high-dose-rate brachytherapy of colorectal liver metastases. Radiation ... of 8 RESEARC H Open Access Value of diffusion weighted MR imaging as an early surrogate parameter for evaluation...

Ngày tải lên: 09/08/2014, 09:20

... purposes) Implementation Science Open Access Research article Assessing organisational readiness for change: use of diagnostic analysis prior to the implementation of a multidisciplinary assessment for ... approach for diagnostic analysis. The combination of qualitative and quantitative data were able to capture multiple perspectives on barrier...

Ngày tải lên: 11/08/2014, 05:22

... intended to provide information that will serve as a guide for design for concrete structures subjected to fatigue loading. ASTM 722-90 However, this report does not contain the type of detailed design ... and concrete subjected to flexure and axial force and for shear reinforcement. The shear fatigue capacity of concrete beams without shear reinforcement...

Ngày tải lên: 24/10/2014, 15:46

... and wall forms: Centrifu- gal force = 0.5 [(mass of form) + 0.2 (concrete mass)]. 2. For stiff mixtures in pipe and other rigid forms: Centrif- ugal force = 1.5 [(weight of form) + 0.2 (concrete ... consolidation of concrete by permitting place- ment with less consolidation effort. Refer to reports of ACI Committee 226 for more information regarding these mate- rials. The...

Ngày tải lên: 24/10/2014, 15:47

... 221R-1 This guide presents information on selection and use of normal weight and heavyweight aggregates in concrete. The selection and use of aggregates in concrete should be based ... routine inspection of the material source and of the aggregate processing plant and handling system, all the way through to the point of batching; routine sam- pling...

Ngày tải lên: 24/10/2014, 15:48

... tools for those evaluating concrete in existing massive structures. 1.1-Scope This report focuses on practices used to evaluate concrete in existing massive structures. Design consid- erations, evaluation ... for Determination of Strength of Concrete 437R Strength Evaluation of Existing Concrete Buil- dings 504R Guide to Sealing Joints in Concrete...

Ngày tải lên: 24/10/2014, 17:26

... all of these aggregate properties influ- ence the proportioning of the concrete mixture, they should be submitted to support the proposed mixture proportions. GUIDE FOR SUBMITTAL OF CONCRETE PROPORTIONS ... selection of the appropriate f cr ′ . Submittal of concrete mixture proportions should con- tain the method used to select f cr ′ for each class of concre...

Ngày tải lên: 24/10/2014, 17:40

... despite the lack of testing standards for many of the methods. The development of testing standards is critical for proper appli- cation and expanded use of NDT methods for evaluation of concrete constructions. Traditionally, ... applications Nondestructive test methods are increasingly applied for the investigation of concrete structures. This increase in...

Ngày tải lên: 24/10/2014, 17:44

... 325.3R-85 (Revised 1987) Guide for Design of Foundations and Shoulders for Concrete Pavements Reported by ACI Committee 325 Methods are suggested for material selection, moisture control, and compaction ... Tests of Soils and Flexible Pavement Com- ponents, for Use in Evaluation and Design of Airport and Highway Pavements Test Method for Density of...

Ngày tải lên: 24/10/2014, 21:59

... l 0 00 STRUCTURAL PERFORMACE l 0 l UNIFORMITY OF CONCRETE 0 0 l . l . EVALUATION OF STRUCTURES PRIOR TO REHABILITATION Table 6.2 -Evaluation of properties of reinforcing steel PROPERTIES ... used for evaluation of concrete structures prior to rehabilitation. The procedures should be used as a guide and are not in- tended to replace judgment by...

Ngày tải lên: 24/10/2014, 21:59

... Specification for Preformed Polychloroprene Elas- tomeric Joint Seals for Concrete Pavements D 2835 Standard Specification for Lubricant for Installa- tion of Preformed Compression Seals in Concrete Pavements D ... Construction of Concrete Pavements and Concrete Bases 330R Guide for Design and Construction of Concrete Parking Lots 504R Guide to Sealing Jo...

Ngày tải lên: 24/10/2014, 22:11