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Showing 1 to 15 of 15 for “"Lightweight aggregate"”.
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Understanding effects of pre-soaked lightweight aggregate on volume stability of mortar and concrete mixtures
… body of literature suggests that pre-soaked lightweight aggregate (LWA) is greatly beneficial for curing concrete internally and reducing autogenous shrinkage by providing additional water reservoirs for the mixture. However, the literature on the effect of LWA on drying shrinkage is limited. …
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Influence of lightweight aggregate and calcium sulfoaluminate cement on deformation of ordinary Portland cement mortar and concrete
… in concrete. The addition of pre-soaked lightweight aggregate (LWA) and usage of calcium sulfoaluminate (CSA) cement are two common methods applied in shrinkage mitigation. Pre-soaked LWA supplies additional moisture to cement paste during hydration, thereby compensating for the water …
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Geologic and Economic Aspects of Lake Agassiz Clays
… it has given agriculture in the region. The lightweight aggregate field may develop a new industry for the clay. It would be of importance to the whole area if a low cost building material were developed. </p>
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USE OF CELLULAR CONCRETE FOR AIR CONVECTION EMBANKMENT TO PROTECT PERMAFROST FOUNDATION IN COLD REGIONS
… material for ACE was conducted. The impacts of lightweight aggregate ACE on the overall pavement performance were evaluated. The design configurations of cellular concrete block ACE were further designed to maximize performance benefits and facilitate future implementation and field …
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The microstructure of synthetic aggregate produced from waste materials and its influence on the properties of concrete
… the properties and microstructure of synthetic aggregate produced using granite quarry fine waste blended with low grade ball clay as the binder. The investigation involved the use of various engineering tests and microstructural characterization techniques with special attention on the …
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Managing landfill leachate using biological approach
… strain ZB1 was used for biological treatment and lightweight aggregate was used for adsorption process. Triplicate of each leachate samples were treated via sole biological treatment, combined dilution with biological treatment and combined adsorption with biological treatment. Removals of ammonia …
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Accelerated carbonation of hazardous wastes
… and then develops the process to manufacture aggregate from the waste removing it from landfill disposal completely. A range of thermal wastes, including those from cement, metallurgical and paper processes, were found to be reactive with carbon dioxide. Many of these wastes are hazardous on …
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Evaluating CEN/TS 12390-9 To Assess Concrete for UK Freeze-Thaw Exposure Conditions
… scaling rating. BS 8500 also states that a lightweight aggregate concrete can perform well in XF4 exposure conditions. This was studied to understand the microstructural properties and whether the aggregate replicates an air entrained concrete in terms of air void size and distribution, and …
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Compressive Creep of a Lightweight, High Strength Concrete Mixture
… River Bridge have been fabricated with a lightweight, high strength concrete mixture (LTHSC). Laboratory test specimens have been cast using the concrete materials and mixture proportions used in the fabrication of the bridge beams. Two standard cure and two match cure batches have been …
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Thermal Conductivity of Fiber-Reinforced Lightweight Cement Composites
… thermal conductivity (ETC) of fiber-reinforced lightweight cement composites. At various stages in the development of the model, the results are compared to experimental values and the model is calibrated when appropriate. Additionally at each stage the proposed model and its results are …
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Thermal Energy Storage Aggregate using Low-Cost Organic Phase Change Materials
… This study has developed thermal energy storage aggregates (TESA) to cope with the aforementioned problems. TESA is made through vacuum impregnation of expanded clay lightweight aggregate (LWA) with low-cost and widely available organic PCMs such as individual or blends of coconut oil (CO), …
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Hochleistungsleichtbeton unter mehraxialer Druckbeanspruchung
In dieser Arbeit wird das Tragverhalten von Leichtbeton unter mehraxialer Druckbeanspruchung behandelt. Zu diesem Zweck wurden zahlreiche Versuche mit verschiedenen Hochleistungsleichtbetonen in einer Triaxial-Prüfmaschine durchgeführt. Als Leichtzuschlag wurde Blähton verwendet. Die hergestellten …
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Valorisation of wind turbine blades into concrete : a contribution towards a more sustainable approach
… of DWTB-GFRP addition as powder, fibers and aggregates. In the third phase, selected concrete mixtures were used for plain concrete specimens and Concrete Filled Fiber Reinforced Polymer Tubes (CFFTs)-confined specimens. All specimens were tested at 28 days and 90 days after being cured in a …
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Mitigation of early age cracking of concrete for bridge decks
In order to reduce reconstruction time and costs in order to better serve the general public a need has arisen for longer service life when considering concrete bridge decks for highway applications. Service life of concrete bridge decks is often cut short indirectly, due to deterioration …