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Item type:Publication, Structural Analysis of Gallery Number 4 of 25 m Length and the Determination of the Total Loads to Be Supported on the Roof of a Concrete Building Within an Operating Cement Plant(2023-06-05)After reviewing the general plans of the Project regarding the need to transport the cement within the existing Plant to a new 75 m 3 Buffer Silo; In order to increase production, the circuit was designed by Galleries, which serve as supports for the square ducts for transport by blown air, where the existing buildings were also used, but maintaining the safety and efficiency standards for a Plant. of cement already operational.The solution for this new transport of cement through pipelines involves the design of structural galleries that will support the weight of the dead and live load, the weight of the gallery ducts and the accessories for transportation.It is important to point out that the structural supports of the galleries and their construction forms have been evaluated according to the circuit, the most critical route being that referred to Gallery 4, because it rests on the roof of a concrete building, which is why which the present applied research work presents the Design of Gallery 4 and its necessary support supports for anchoring on the roof.The length of Gallery 4 is 25 meters and inside it supports a double square transport duct with 3 inspection grills for personnel. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Preliminary Experimental Evaluation of Buildability Improvement Methods for Concrete for 3D Printing(Trans Tech Publications Ltd, 2023-01-01)3D concrete printing is an innovative construction process based on fully auto nomousmaterial deposition. One of the challenges of implementing this technology is the development of printable concrete formulations, as this material must exhibit particular fresh-state properties. Among these, buildability is one of the most important. This property describes the material's ability to support weight at very early ages, allowing a layer-by-layer construction. Therefore, this paper aims to evaluate two approaches for improving concrete buildability: the optimization of the super plasticizer dosage and the external application of quick-setting admixture. The results showed that reducing super plasticizer content improved buildability by increasing the static yield strength.However, this approach has a collateral disadvantage as concretes presented problems duringextrusion. On the other hand, the results of cylinder stability and Vicat tests indicate that the external application of quick-setting admixture leads to concretes with improved buildability without affecting the initial workability and a faster hardening process. According to these results, the latter approachcan potentially be applied in small and large-scale 3D printing. - Some of the metrics are blocked by yourconsent settings
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