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The long-term performance of concrete repair intended to address corrosion of embedded reinforcing steel is influenced by the depth of repair and the condition of the substrate concrete surrounding the repair area. The extent of concrete removal should be adjusted in accordance with the degree and nature of distress affecting the member or structure, while taking into account the concrete condition, the structural design, and the applied loads.
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This TechNote discusses the implications of improper procedures for curing test specimens at the jobsite that result in strength test results that are not reliable for acceptance of concrete.
Keywords:
contractor; engineer of record (EOR); initial curing; responsibilities; test specimens; testing agency.
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Building information modeling (BIM) presents structural information in the form of three-dimensional (3-D) graphical representations of elements such as beams, columns, and slabs. This information may be further associated with metadata (nongraphical information) such as compressive strength, reinforcement ratio, and maximum aggregate size. It is not necessarily possible to review a modeled object and understand its accuracy or intention. Viewers of models tend to assume designs are more complete than they may actually be, partially due to highly detailed graphics. Does this object represent 10, 30, or 80% of the final design?
Keywords:
beams; building information modeling; cast-in-place; columns; level of development; slabs.
Code:
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This Specification covers epoxy slurry (ES) polymer overlay for bridge and parking garage decks. Type ES polymer overlay incorporates a low-modulus epoxy binder, fillers, and selected aggregate to produce a flexible, skid-resistant, and low-permeability overlay. The overlay may be used for both new construction and rehabilitation of existing structures. The overlay is placed by applying the mixed epoxy binder and filler to the surface and broadcasting aggregate. This Specification includes requirements for epoxy resin, fillers, aggregates, storage and handling, surface preparation, surface profile, mixing, placement, quality control, and quality assurance.
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This document provides a guide for owners, contractors, designers, and testing, specifying, and inspection organizations engaged in the application of shotcrete for underground support. The guide provides general information for the selection of constituent materials, and methods to proportion shotcrete. Typical methods of batching, mixing, and handling of proportioned shotcrete materials are detailed along with shotcrete placement methods and equipment.
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The purpose of this document is to provide a guide to the protocol for testing and reporting of data for cementitious repair materials. It does not address all the issues associated with material selection. It is the responsibility of the user of this document to determine the suitability of the repair material before use.
Keywords:
data sheet protocol; material characteristics; material properties; packaging; repair materials; test methods; user guide.
Code:
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This report provides a technical overview of alkali-activated cement (AAC) history; chemistry; and mechanical, physical, and durability properties. It also highlights successful case study applications and current technical challenges.
Keywords:
alkali-activated cements (AACs); alternative cements; geopolymers
Code:
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Civil Survey Applications ( ex . Solutions ) Civil Site Design v24.0 for Autodesk Civil 3D 2015-2024
Size: 1.42 GB
For over 20 years CSS has assisted customers in the civil and survey industries with premium technical support, specialized and customized training services and development of industry driven software solutions built on Autodesk and other technologies. Civil Site Design (ex. Advanced Road Design) adds highly efficient and simple-to-use civil design tools for road network design, highways, road reconstruction, site grading, surfaces, stormwater, sewer and pipeline design to your current CAD platform.
Code:
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This Code provides requirements for test load magnitudes, test protocols, and acceptance criteria for conducting a load test as a means of evaluating the safety and serviceability of concrete structural members and systems of structures. A load test may be conducted as part of a structural evaluation to determine whether a structure requires repair and rehabilitation, or to verify the adequacy of repair and rehabilitation measures.
Keywords:
acceptance criteria; cyclic loading; load test; monotonic loading; test load magnitude; test protocol.
Code:
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