188.8.131.52. Part 2: For the descending part of tension stiffening model relationcurve " Tension-softening": A load-ԑ for the tested specimen is shown in Fig. (4.43), where the average of three specimens P-16-5, P-16-6 and P-16-7 is used as an example. The average of three specimens Ø12, the average of three specimens Ø 16 and the results of specimens Ø 18 are used in this study. in the same Fig., the response of steel alone is a straight line.
Tensile Test Lab Report From: To: J. Doe Contract Officer Engineering Products Corp. Anywhere, KY Date: 15th OCTOBER 2014 Executive Summary: Tensile tests are carried out to enable us understand the properties of different materials and how they behave when under load. In the lab we tested two kinds of metal. Two aluminum (Ax and Ay) and three steel (Sx, Sy, and Sz). We used two machines: a servo-hydraulic load frame to determine the yield strength and ultimate tensile strength and the Rockwell hardness to determine the hardness.
Introduction Capacitive technique is an electromagnetic method which is able to measure water content of a material. Since moisture is a common cause of the pathology of reinforced concrete, it is essential to assess the water content in concrete. Once the water content is determined, the corrosion risk of reinforcement can be estimated. The following paragraphs will first describe the theory of this technique then to its application in structural health monitoring (SHM) with a case study. The principle The principle of capacitive sensors is to measure the changes in capacitance.
SYNOPSIS ON DEVELOPMENT AND PERFORMACE OF CONCRETE USING SUPPLEMENTARY MATERIALS SUBMITTED BY: RAGHAV M Tech (STRUCTURAL ENGINEERING) DEVELOPMENT AND PERFORMACE OF CONCRETE USING SUPPLEMENTARY MATERIALS OBJECTIVE: 1.The main objective of this study is to investigate the use of various supplementary materials for preparing concrete. 2.To compare
Secondary elements such as barriers, sidewalks, and diaphragms may increase the load carrying capacity of girder bridges. This in turn affects reliability. The objective of this study is to evaluate the potential benefit of secondary elements on the system reliability of girder bridges, if these elements are designed with the structural system to participate resisting vehicular live loads. Simple span, two lane structures are considered, with composite steel girders supporting a reinforced concrete deck. For structural analysis, a finite element procedure is developed that combines a grillage model of the bridge deck with solid elements for edge-stiffening effects.
EXPERIMENTAL SET-UP Different Tests and Equipment 4.1 Slump-flow test 4.2 L-box test 4.3 U-box test 4.4 V-funnel test 4.5 Compressive strength test 4.1 SLUMP FLOW TEST The slump flow is used to assess the horizontal free flow of SCC in the absence of obstructions. It was first developed in Japan for use in assessment of underwater concrete. The test method is based on the method for determine the slump. The diameter of the concrete circle is a measure for the filling ability of the concrete. 4.1.1 Equipment The apparatus is shown in figure.
The strengths of the concrete cubes (150 x 150 x 150 mm3) were calculated form the mean strength of the one specimen tested at different ages (0, 6, 12, 18 months). Table 1 Three kinds of the concrete An epoxy based adhesive and primer developed at LFCS were used for bonding the CFRP plates to the concrete substrates. Tensile properties of the dog-bone shaped epoxy
(e) Design safety factors : The designing engineer shall use the following minimum safety factors: 1.75 for horizontal shear at base of fill; 1.5 for horizontal shear within the fill due to seepage through the outer face; 1.5 for bearing capacity of foundation soils; 1.5 for protection against shear failure of any circular arc in either inside or outside slope. It is imperative that water pressure distribution be included in the analyses. Construction phase: This phase includes preparation of subsequent construction contracts, review of selected construction contracts, site visits, support for claims and modifications, development of operation and maintenance (O&M) manuals, and preparation and maintenance of as-built drawings. Site visits must be made to verify that conditions match the assumptions used in designing the project features. Operation and maintenance
For each mixture twelve specimens were casted, four each of beam, cube, and cylinder. Three percentages of nano-silica were used (0%, 3%, and 5%) with four percentages of partial replacement of river sand by crushed sand (0%, 33%, 67%, and 100%). Cube size of 70.6mm x 70.6mm x 70.6mm, cylinder of size 94mm x 47mm diameter and beams of size 160mm x 40mm x 40mm were casted. For the compressive strength test, four cubes were tested at the age of seven day, four cubes at the age of fourteen day and three cubes at the age of twenty-eight day. For split-tensile test, three cylinders were tested at the age of seven day, three cylinders were tested at the age of fourteen day, three cylinders were tested at the age of twenty eight day, three cylinders were tested for finding modulus of elasticity at the age of twenty eight day.
Three different methods of compacting mortar with the calibrated container which should have a volume of approximately one liter are given are in the BS Standard. The method to be used depends upon the consistency of the fresh mortar as determined by the flow table test. In this paper, all the mixtures achieved a flow table value of 155 mm, the flow table value of 155± 10 mm indicating plastic mixtures. The results for the bulk density of fresh mortar with use second method for all mortars are shown in Fig. 6.