3 edition of Accelerated aging of concrete found in the catalog.
Accelerated aging of concrete
Roberto C. Pinto
by U.S. Dept. of Transportation, Federal Highway Administration, Research, Development and Technology, Turner-Fairbank Highway Research Center, Available through the National Technical Information Service in McLean, Va, [Springfield, Va
Written in English
|Statement||[R. Pinto, S. Hobbs, K. Hover]|
|Genre||Handbooks, manuals, etc.|
|Contributions||Hobbs, S., Hover, Kenneth C., United States. Federal Highway Administration. Office of Infrastructure Research and Development., Turner-Fairbank Highway Research Center., Cornell University. School of Civil and Environmental Engineering.|
|The Physical Object|
|Pagination||v, 88 p.|
|Number of Pages||88|
Accelerated aging is testing that uses aggravated conditions of heat, humidity, oxygen, sunlight, vibration, etc. to speed up the normal aging processes of items. It is used to help determine the long-term effects of expected levels of stress within a shorter time, usually in a laboratory by controlled standard test is used to estimate the useful lifespan of a product or its shelf. Generally, the experience of accelerated aging can be seen medically, physically and functionally. Many family members and caregivers commonly observe that people with Down syndrome appear to “slow down” once they enter their late 40s or 50s. Complicating this picture is that “normal aging” in adults with Down syndrome is still not.
This study investigates the impact of accelerated aging conditions on the long-term flexural behavior and ductility of reinforced concrete (RC) members with glass fiber-reinforced polymer (GFRP) bars (RC-GFRP specimen) and steel bars (RC-steel specimen). A total of thirty six specimens were designed with different amounts of reinforcement with three types of reinforcing bars (i.e., helically Cited by: The Schwarzbein Principle II, Transition book. Read 10 reviews from the world/5(10).
Testing of Hardened Concrete FACTORS AFFECTING STRENGTH General Comments Causes of Strength Variations – Cement – Aggregates – Mix Proportioning – Making and Handling the Concrete – Temperature and Curing Apparent Low Strength Accelerated Strength Development – High-Early-Strength Cement – AdmixturesFile Size: KB. This report provides a review of the literature on accelerated aging of concrete. It was undertaken, as part of a research project on predicting the long-term environmental performance of Portland cement concrete (PCC) pavements containing coal fly : R Pinto, S Hobbs, K Hover.
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Summary: This report provides a review of the literature on accelerated aging of concrete. It was undertaken as part of a research project on predicting the long-term environmental performance of portland cement concrete (PCC) pavements containing coal fly ash.
Get this from a library. Accelerated aging of concrete: a literature review. [Roberto C Pinto; S Hobbs; Kenneth C Hover; United States. Federal Highway Administration.
Office of Infrastructure Research and Development.; Turner-Fairbank Highway Research Center.; Cornell University. School of Civil and Environmental Engineering.]. ACCELERATED AGING OF CONCRETE: A LITERATURE REVIEW This report provides a review of the literature on accelerated aging of concrete.
It was undertaken as part of a research project on predicting the long-term environmental performance of portland cement concrete (PCC) pavements containing coal fly : R Pinto, S Hobbs, K Hover. Although accelerated aging of concrete structures have been extensively studied in the literature, this is one of the first studies on the long-term degradation in DCSS due to corrosion and ASR.
In this paper, the durability of the adhesive bond between concrete and carbon fibre reinforced polymers (CFRP) strengthening systems has been investigated under accelerated ageing conditions, i.e. The aging was accelerated by using elevated temperatures.
Wetting and drying and freezing and thawing cycles were combined with some solutions to simulate the coupling effects as expected in field conditions.
The tensile strength and interlaminar shear strength of FRP bars were determined before and after exposure, Cited by: “The main problem with so-called ‘accelerated aging’ is that of the three things that happen to whiskey in the barrel, accelerated aging schemes only address one of them, extraction,” he explained in an email.
“You can accelerate extraction but oxidation and evaporation simply take time. Accelerated Aging of Materials and Structures: The Effects of Long-Term Elevated-Temperature Exposure Get This Book MyNAP members save 10% online.
Login or Register to save. Accelerated Degradation and Durability of Concrete in Cold Climates. by exploring novel test methods for accelerated aging, damage and durability evaluation and quantification, better understanding and predicting the long term performance and failure mechanism of concrete and its constituents in cold climates, establishing performance.
Accelerated Aging Procedure for Asphalt Concrete Performance Prediction Novem Asphalt pavement represents a major investment in infrastructure in the U.S.
and we are all familiar with potholes that develop as asphalt ages. Accelerated aging methodologies are integral to the induction of degradation and component faults into the test systems.
A brief review of some of the most prominent aging methodologies, associated degradation and measurable precursors is presented. Thermal Cycling Thermal cycling is among the most prevalent accelerated aging methodology in Cited by: The accelerated ageing of the copolymer was found to closely follow the Arrhenius relationship between 18 and 45"C with activation energy of kJ .
This measured value of activation energy is such that an ageing regime based upon the. Aging of concrete. What is the effect of aging on concrete. Aging, if one means merely the effect caused by the passage of time, has no effect on concrete.
Of course concrete sets, hardens, gains strength, and exhibits reduced permeability with the passage of time, but it is not the passage of time alone that causes these things to happen.
loads and accelerated aging conditions (i.e., 47 °C and 80% relative humidity) in a chamber. The flexural behavior of specimens under day exposure was compared to that of the companion specimens without experiencing accelerated aging conditions.
Results indicate that the accelerated aging conditions reduced flexural capacity in not onlyCited by: Methods include accelerated testing and accelerated aging.
Accelerated testing is required for mechanisms that involve progressive accumulation of damage or deformation that could lead directly to failure. For accelerated test methods it is important to develop equivalence between test progression and service exposure time or flight cycles.
reinforced concrete exposed to various conditions (wetting-drying and hot water) enhanced and improved by incorporation 30% of metakaoline (by weight of cement). Keywords: sisal fiber, metakaolinite, accelerated aging.
INTRODUCTION Concrete is the most versatile material used in civil engineering Size: KB. Standard Test Method for Hot Water Accelerated Aging of Glass-Fiber Reinforced Cement-Based Composites ASTM C R Standard Test Method for Determination of Glass Fiber Content in Glass Fiber Reinforced Concrete (GFRC) (Wash-Out Test).
accelerated aging studies will be of much use in the materials science community. OBJECTIVE The highly empirical approaches taken for the majority of accelerated aging studies dictates that the primary objective of an accelerated aging method is to screen and characterize new material systems.
Material testing is a costly process that often File Size: KB. This guide provides information for developing accelerated aging protocols to rapidly determine the effects, if any, due to the passage of time on the sterile integrity of the sterile barrier system (SBS), as defined in ANSI/AAMI/ISO – and the physical properties of.
Accelerated curing. Accelerated curing is any method by which high early age strength is achieved in concrete.
These techniques are especially useful in the prefabrication industry, wherein high early age strength enables the removal of the formwork within 24 hours, thereby reducing the cycle time, resulting in cost-saving benefits. Durability of Commercially Available GFRP Reinforcement in Seawater-Mixed Concrete under Accelerated Aging Conditions Journal of Composites for Construction April Microstructure Improvement of Cementitious Systems using Nanomaterials: A Key for Enhancing the Durability of Concrete.Accelerated Aging Surendra P.
Shah Professor of Civil Engineering and Director Center for Concrete and Geomaterials Northwestern University Evanston, Illinois James I.
Daniel Senior Structural Engineer Construction Technology Laboratories, Inc. Skokie, Illinois Ut Darmawan Ludirdja.Accelerated Aging Testing.
Utilizing our technical expertise in predictive analysis and accelerated aging testing methodologies, we have developed an approach that enables predicting long-term product life from relatively short-term test data.
We use elements such .