The need to control volume change induced primarily by temperature change in mass concrete often requires thermal control of concrete. This report reviews these thermal control methods such as precooling, postcooling, and insulating systems. A simplified method for computing the temperature of freshly mixed concrete cooled by various systems is also presented.
Keywords:
cement content; coarse aggregate; creep; formwork; heat of hydration; mass concrete; modulus of elasticity; precooling; postcooling; pozzolan; restraint; specific heat; strain; stress; temperature rise; tensile strength; thermal conductivity; thermal diffusivity; thermal expansion; thermal gradient; thermal shock.
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This guide describes the technology and applications of fiber-reinforced shotcrete (FRS) with a focus on synthetic and steel macrofibers. It serves as a bridge between information given in documents reported by ACI Committee 506 and ACI Committee 544. Proportions of typical mixtures, batching, mixing, and application procedures are described, including modification of mixture proportions and equipment needed for FRS. General performance criteria of FRS, particularly postcracking flexural strength and toughness, are described along with other typical properties and benefits, such as increased resistance to shrinkage cracking and impact resistance. Corresponding test methods are also discussed. The document presents general FRS design considerations. Applications of FRS are described, including construction and repair of tunnel and mining linings, slope stabilization, retaining structures, fire-explosive-spalling-resistant linings, and architectural structures. The report also gives guidance on the specification and quality control of FRS.
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Posted by: pezhmankhan - 12-03-2021, 06:26 AM - Forum: Archive
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ASCE 7-22, Minimum Design Loads and Associated Criteria for Buildings and Other Structures
Edition: 2022 Publish Date: 2022 ISBN: 9780784483497 Published By: ASCE Related Links:
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ACI 562-21
Assessment, Repair, and Rehabilitation of Existing Concrete Structures - Code and Commentary
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Posted by: poolmand - 12-01-2021, 07:01 AM - Forum: ACI
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ACI 310.1-20: Specification for Polished Concrete Slab Finishes
| Size: 3.2 MB| Format:PDF| Quality:Original preprint| Publisher: American Concrete Institute| Year: December 16, 2020 | ISBN: 1641951273
This is a Reference Specification that the Architect/Engineer can apply to any construction project involving polished concrete slab finishes by citing it in the Project Specifications. A mandatory requirements checklist and an optional requirements checklist are provided to assist the Architect/Engineer in supplementing the provisions of this Specification as required or needed by designating or specifying individual project requirements. The first section of this Specification covers general requirements for polished concrete slab finishes. The second section covers requirements for products and equipment, and the third section covers construction requirements. Provisions governing testing, evaluation, and acceptance of polished concrete slab finishes are included. This Specification for polished concrete slab finishes is applicable to both slabs-on-ground and suspended slabs.
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This document presents recommended methods and procedures for measuring, mixing, transporting, and placing heavyweight concretes that are used principally for radiation shielding in nuclear construction. Also covered are recommendations on cement, heavyweight aggregates, water, and admixtures. Mixture proportioning of heavyweight concrete is discussed. Mixing equipment, form construction, placing procedures, and methods of consolidation are described. Quality control, inspection, and testing are emphasized, and a list of references is included. Preplaced heavyweight concrete is not discussed in this version of 304.3R. It is covered in the 2004 version of the document.
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This Specification covers minimum requirements for the construction of pervious concrete pavement. This Specification covers materials, preparation, forming, lacing, finishing, jointing, curing, and quality control of pervious concrete pavement. Provisions governing testing, evaluation, and acceptance of pervious concrete pavement are included.
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ABAQUS software is a general-purpose finite element simulation package mainly used for numerically solving a wide variety of design engineering problems; however, its application to simulate the dynamic structures within the civil engineering domain is highly complicated. Therefore, this book aims to present specific complicated and puzzling challenges encountered in the application of Finite Element Method (FEM) for solving the problems related to Structural Dynamics using ABAQUS software that can fully utilize this method in complex simulation and analysis. Various chapters of this book demonstrate the process for the modeling and analysis of impenetrable problems through simplified step-by-step illustration by presenting screenshots from ABAQUS software in each part/step and showing various graphs.
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Bentley RAM Elements CONNECT Edition V16 Update 5 v16.05.00.213 x64
Size: 1.28 GB
Tackle projects with confidence and efficiently produce high quality and economical designs, using various concrete, steel, and joist building materials; all in compliance with your local building codes. Quickly design, analyze, and create documentation for your building projects, saving time and money. Design anything from individual components to large-scale building and foundations. Increase your productivity by eliminating tedious and time consuming tasks with RAM’s practical applications. RAM maximizes your software investment with one fully integrated application suite offering complete building analysis, design, and drafting for both steel and concrete structures. Easily share your structural data with applications such as Revit, Tekla, and Bentley’s AECOsim Building Designer through Integrated Structural Modeling (ISM) workflows.
Capabilities
- Analyze gravity and lateral load
Design and analyze simple or complex structures for a wide range of loading conditions, including those induced by gravity such as dead and live loads, including skip conditions, in combination with lateral loads including wind and seismic.
- Comply with seismic requirements
Design and detail seismic force-resisting systems, generating seismic loads according to the relevant building code. Consider these forces in the design of elements and, where applicable, the design of frames and the larger structural system. Enforce the ductility requirements of the selected design code in element proportioning and detailing.
- Design and analyze with finite elements
Complete building analysis, design, and drafting for the entire structure accurately and efficiently using our state-of-the-art finite element analysis. Reduce or eliminate the time spent waiting for results using our fast solvers.
- Design and analyze structural models
Quickly model your entire structure, including decks, slabs, slab edges and openings, beams, columns, walls, braces, spread and continuous footings, and pile caps. Efficiently automate many of your time-consuming design and analysis tasks and produce practical system and component designs that are document ready.
- Design to international design standards
Extend the reach of your business practice and take advantage of global design opportunities by using a wide range of international standards and specifications in our design products. Complete your designs with confidence thanks to extensive support of U.S. and international standards.
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This report presents recommendations for structural design, materials, and construction of structures commonly used for hazardous materials containment, including reinforced concrete tanks, sumps, and other structures that require dense, impermeable concrete with high resistance to chemical attack. The report discusses and describes design and spacing of joints, proportioning of concrete, placement, curing, and protection against chemicals. Information on liners, secondary containment systems, and leak-detection systems is also included.
Keywords:
chemical protection; liners; construction joint; containment systems; gas-tight; hazardous materials; joint sealant; liquid-tight; precast concrete; prestress; water-cementitious materials ratio; waterstop.
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