دانلود رایگان مقاله لاتین بهبود هندسه سطح از سایت الزویر
عنوان فارسی مقاله:
روش های ارزیابی برای بهبود هندسه سطح از طبقه بتنی: مطالعه موردی
عنوان انگلیسی مقاله:
Evaluation methods for improving surface geometry of concrete floors: A case study
سال انتشار : 2015
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مقدمه انگلیسی مقاله:
1. Introduction
Functional performances, for some kinds of concrete pavements, have the same importance of the mechanical properties that determine structural design. This happens, in particular, when it is necessary to ensure strict operating requirements due to particular exercise conditions. For example, the floors of warehouse or logistic centers, often present severe requirements for the surfaces regularity, not only with reference to the loads for goods storage but also in order to ensure safety and precision for handling of working vehicles.Pavement regularity is normally defined by means of the evaluation of the differences between the points’ elevation on the real surface with respect to an ideal reference plan. To allow simple measurement processes for this characteristic, it is easy to refer to some linear alignments (surfaces profiles), as showed in Fig. 1. Surface regularity needs to be defined and controlled with regard to two features [1,2]. The first characteristic is called “levelness” and it evaluates the surface regularity over a longer distance, typically equal or more than 3 m. The second characteristic is defined “flatness” and it evaluates the surface regularity over a short distance, typically equal to 300 mm. In Fig. 2, different cases of surface profile irregularities, in comparison to an ideal flat and level profile, are shown. Good levels of flatness and levelness should be guaranteed for an industrial cement surface floor, for several reasons, depending on the operations performed in the warehouse. In particular
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کلمات کلیدی:
Guide for Concrete Floor and Slab Construction - Google Books Result https://books.google.com/books?isbn=0870311514 American Concrete Institute. Committee 302, ACI Committee 302, American Concrete Institute - 2004 - Concrete construction ... the uniformity of the combined aggregate gradation, particle shape and surface texture of ... Using larger maximum-size aggregate and improving the overall aggregate ... not be used in floors that are to have a dense, smooth, hard-troweled surface. The optimum quality and content of fine aggregate in concrete for floors ... Landscape Architectural Graphic Standards https://books.google.com/books?isbn=1118272005 Leonard J. Hopper - 2012 - Architecture The improvement is rapid at early ages but continues more slowly there— after for ... A common illustration of this is the surface of a concrete floor that has not had ... Size and shape of a concrete member have an Phillip Arnold, L. M. Scofield ... Specifications for Structural Concrete, ACI 301-05, with Selected ... https://books.google.com/books?isbn=0870311948 American Concrete Institute - 2005 - Concrete ... the uniformity of the combined aggregate gradation, particle shape and surface texture of ... Using larger maximum-size aggregate and improving the overall aggregate ... not be used in floors that are to have a dense, smooth, hard-troweled surface. The optimum quality and content of fine aggregate in concrete for floors ... Design and Construction of Concrete Floors, Second Edition https://books.google.com/books?isbn=0750666560 George Garber - 2006 - Technology & Engineering Cement and finishability More cement means greater finishability, provided water is also ... content of at least 300kg/m3 (560lb/yd3) for concrete that forms the floor's wearing surface. ... The shape of the fine aggregate is also important. ... Ways to improve finishability When a mix is hard to finish, one or more of the following ... [PDF]Best Practices for Preparing Concrete Surfaces Prior to Repairs and ... https://www.usbr.gov/research/projects/download_product.cfm?id=446 Suitable Concrete Surface Roughness Parameters . ..... For example, a high interface roughness may improve shear bond strength, whereas ... All bond mechanisms act on the true surface area, as opposed to the geometric surface area, and ...
