Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 35 for “"Lightweight Concrete"”.
-
Interface Shear Strength in Lightweight Concrete Bridge Girders
… and cast-in-place decks are a typical type of concrete bridge construction. A key part of this type of construction is developing composite action between the girder and deck. In order to develop composite action, adequate horizontal shear resistance must be provided at the interface. As …
-
Production of lightweight concrete aggregate from Virginia shale
… the feasibility of producing a cellular, lightweight product by subjecting shales to temperatures of 2100 ± 100 °F in a muffle furnace. Such a product can be utilized as an aggregate for lightweight concrete to supplement cinders which have long been used. The growing scarcity of cinders …
-
Lightweight concrete : investigations into the production of natural fiber reinforcement
… natural fiber tensile reinforcement to aerated concrete. Concrete is a great composite material which can be created in various proportions and with various materials to alter its strength, density and porosity, amongst other properties. Concrete which is used commonly in construction of …
-
Structural Performance of High Strength Lightweight Concrete Pretensioned Bridge Girders
… and smaller cross-sections. If high strength lightweight concrete (HSLWC) is used, these advantages are further enhanced due to the corresponding reduction in self-weight. Additional benefits can then be realized in the form of more traffic lanes, increased load capacity, smaller …
-
Incorporation Of High-Volume Fly Ash To Produce Structural Lightweight Concrete
Concrete industry is one of the main industries using large proportion and volume of our natural resources. Ordinary Portland Cement is an important source for the emission of carbon dioxide into the atmosphere because of burning fuel and raw materials’ decomposition during the production process …
-
Lightweight concrete : investigations into the production of variable density cellular materials
… and form in the development of a new type of concrete. As concrete is the most widely used building material in the world, innovation in this material has more potential to effect change in our built environment than innovation in any other. With the objective of minimizing raw material …
-
Horizontal Shear Transfer Between Ultra High Performance Concrete And Lightweight Concrete
Ultra high performance concrete, specifically Ductal® concrete, has begun to revolutionize the bridge design industry. This extremely high strength material has given smaller composite sections the ability to carry larger loads. As the forces being transferred through composite members are …
-
Ultimate Bearing Strength of Post-tensioned Local Anchorage Zones in Lightweight Concrete
… strength of the local zone in normal weight concrete. The local zone is the area of concrete directly ahead of the bearing plate. The equation can be broken into two distinct parts: unconfined bearing strength of concrete enhanced by the A/A<sub>b</sub> ratio and the enhancement of strength …
-
Shear Strength of Full-Scale Prestressed Lightweight Concrete Girders with Composite Decks
Although design codes have accepted lightweight concrete as a suitable structural material for nearly 50 years, there is still a good deal of uncertainty as to how to calculate the strength of this material when designing for shear in beams. Design codes tend to penalize lightweight concrete due to …
-
Behaviour of lightweight concrete beams strengthened with carbon fibre reinforced polymer in shear
… used for the retrofit of ailing reinforced concrete structures, for both shear and flexure. This technology provides unique features compared with conventional retrofitting systems. Among these FRP has good corrosion resistance, lightweight and excellent mechanical properties. Furthermore, …
-
The performance of lightweight concrete brick containing expanded polystyrene and palm oil fuel ash
The development of lightweight building materials has contributed to the construction industry, probably because of its advantages in terms of lower weight and low construction cost. One of the most demanded lightweight building material is lightweight concrete brick. Owing to rapid population …
-
Material Evaluation of an Elastomer, Epoxy and Lightweight Concrete Rail Attachment System for Direct Fixation Light Rail Applications
… and analyze a direct fixation method that uses lightweight concrete plinths and an elastomer-epoxy system to attach the rails to the bridge deck. The elastomer used was a two-part, pourable elastomer with cork particles intermixed to alter the mechanical properties of the material. A lightweight …
-
LIGHTWEIGHT AND ADVANCE PRECAST CONCRETE SYSTEM FOR MODULAR BUILDING CONSTRUCTION
… and Institutional Buildings with the use of lightweight concrete. Based on the finite element analysis (FEA) of two buildings with similar configurations and global aspect ratios, the long-term service limit state (long-term SLS), seismic action performance, ultimate limit state (ULS), and …
-
Resistência ao esforço cortante no concreto leve
… the shear strength of structural members made of lightweight concrete. Ten lightweight reinforced concrete beams prepared with expanded shale coarse aggregates were tested. The beams were designed in such way that their geometrical and mechanical characteristics were different for each specimen. …
-
Vibration and Flexural Strength Characteristics of Composite Castellated Beams
With the development of lightweight concrete and design optimizations, floor vibration problems are becoming a serious serviceability problem. The castellated beam is a prime example and was the focus of this study. The vibration and flexural strength performance were verified in this paper. The …
-
Resistência ao esforço cortante em vigas curtas de concreto leve, sem armadura transversal
In the failure test of a reinforced concrete beam, with the loads and reactions applied on the top and bottom of the beam, respectively (named "directly loaded beam"), it is evident that the shear strenght of the beam is greatly affected by the ratio of shear span to effective depth, a/d. Thus, for …
Page 1 of 2