Assessment Of Scaling Durability Of Concrete With CFBC

Assessment of Scaling Durability of Concrete with CFBC Ash

Assessment of Scaling Durability of Concrete with CFBC Ash by Automatic Classification Rules Article (PDF Available) in Journal of Materials in Civil Engineering 24(7):860-867 · July 2012 with ...

CBD-116. Durability of Concrete Under Winter Conditions - NRC-IRC

CBD-116. Durability of Concrete Under Winter Conditions. Originally published August 1969. E.G. Swenson. Concrete is a versatile and widely used construction material. Its excellent record of durability is remarkable when one considers the variety of severe exposures to which it is subjected.

Avoid Surface Defects on Exterior Slabs

Apr 21, 2011 · Avoid Surface Defects on Exterior Slabs ... overall quality of concrete (strength, mix proportions, aggregate properties, etc.) and quality of the air-entrainment and curing contribute to the ...

1. Introduction

The Yellow River is the second longest river in China. As illustrated in Figure 1, the river originates in western China, flows toward the east, and empties into the Bohai Sea.When passing through the Loess Plateau situated in the midwest of China, the river erodes and thus carries downstream billions of tons of loess each year, which eventually deposits to the lower reaches of the river.

IJERM | International Journal of Engineering Research and

Application of self crack healing capacity of concrete induced with bacteria is the promising technology of the future to repair and maintain the cracks in concrete structures. This mechanism of self crack healing using precipitated calcite by microorganisms enhances both strength and durability characteristics of concrete significantly.

staff - Polish Academy of Sciences

It has been found that machine learning is a tool that can be applied to classify concrete durability. The rules generated by computer programs AQ21 and WEKA by using the J48 algorithm provided a means for adequate categorization of plain concrete and concrete modified with CFBC fly ash as materials resistant or not resistant to the surface ...

Materials and Engineering Catalog

Materials and Engineering Catalog - Free download as PDF File (.pdf), Text File (.txt) or read online for free. 2014 Catalog by Woodhead Publishing. The world’s most authoritative online books and journals merge on ScienceDirect to provide the comprehensive and reliable content that researchers need, and the accessibility and search capability they want, which they cannot get …

Materials | Free Full-Text | The Influence of Fluidized

Jóźwiak-Niedźwiedzka analyzed the influence of CFBC fly ash on the chloride and scaling resistance of concrete. She showed that the cement replacement by 15% and 30% CFBC fly ash provided higher chloride resistance, but only replacement by 15% CFBC fly …

Condition Assessment of Structures

related to the compressive strength of the concrete. Pull out tests are used to: • Determine in-situ compressive strength of the concrete • Ascertain the strength of concrete for carrying out post tensioning operations. • Determine the time of removal of forms and shores based on actual in-situ strength of the structure.

Evaluation of Scaling Progress in Harbor Concrete Structure

Physical and chemical surveys of concrete were conducted on the upper crests of approximately 10 to 40 year old harbor breakwaters on coastal areas in Hokkaido to analyze the progress of scaling. These surveys indicated that concrete with a compressive strength of 35MPa or more has high resistance to scaling.

Carbon capture and storage update

First published on 13th September 2013. In recent years, Carbon Capture and Storage (Sequestration) (CCS) has been proposed as a potential method to allow the continued use of fossil-fuelled power stations whilst preventing emissions of CO 2 from reaching the atmosphere. Gas, coal (and biomass)-fired power stations can respond to changes in demand more readily than many other sources of ...

Reliable assessment of resistance of concrete paving blocks

The backing concrete of the uneventful types K9 and K11b experienced very high scaling in the CDF procedure and would therefore not be assessed for this test regarding their behavior in installed condition. Bond strength between facing and backing concrete . A possible damage pattern of installed pavers is the spalled facing concrete.

Edition: Volume-4, Issue-4

It has proved to be beneficial from the point of economic, environmental benefits and Preservation of non-renewable recourses this thesis presents a study conducted on mechanical and durability properties of recycled aggregates concrete. The investigation covered concrete mixes at the water-cementitious material with a ratio of 0.4.

Study on Strength and Ultrasonic Velocity of Air-Entrained

Nondestructive testing technology is essential in the quality inspection of repair, alteration, and renovation of the existing engineering, especially for concrete structure in severe environment. The objective of this work is to deal with the behavior of ultrasonic velocity and mechanical properties of plain concrete and air-entrained concrete subjected to freeze-thaw cycles (F-T-C). The ...

Clean Coal Technologies in Japan

As a result of this assessment, the development of coal liquefaction technology in Japan moved from the research stage into the practical application stage. Furthermore, development of materials and new processes are expected to significantly influence development in other industries.

DURABILITY OF CONCRETE

Durability of concrete • Durability of concrete may be defined as the ability of concrete to resist: −weathering action, −chemical attack, and −abrasion while maintaining its desired engineering properties. • Different concretes require different degrees of durability depending on the exposure environment and properties desired.

Durability Studies on the Recycled Aggregate Concrete in

Recycling the C&D waste into recycled aggregates (RA) is an effective method for reducing the amount of C&D wastes. Many studies on the properties of RA and the durability of recycled aggregate concrete (RAC) were conducted in China over the past decade.

Completed Projects

Geopolymer Concrete manufactured using different quality fly ashes will be evaluated for the mechanical properties such as unit weight, setting time, workability, compressive strength, tensile strength, etc.This is aimed to study the variation in properties of fly ash-based geopolymer concrete (GPC) curing without elevated heat.

The Influence of Fluidized Bed Combustion Fly Ash on the

Jóźwiak-Niedźwiedzka analyzed the influence of CFBC fly ash on the chloride and scaling resistance of concrete. She showed that the cement replacement by 15% and 30% CFBC fly ash provided higher chloride resistance, but only replacement by 15% CFBC fly …

MATERIALS AND STRUCTURES

MATERIALS AND STRUCTURES Vol. 42 - 2009 SPIS TREŚCI is. 1(315) 1 Durability characteristics of self-consolidating concrete designated for repair applications / SOO-DUCK HWANG and KAMAL H. KHAYAT 15 Hydration monitoring of cement-based materials with resistivity and

(PDF) Automatic categorization of chloride migration into

Automatic categorization of chloride migration into concrete modified with CFBC ash Article (PDF Available) in Computers and Concrete 9(5) · May 2012 with 68 Reads How we measure 'reads'

Journal of Materials in Civil Engineering | Vol 24, No 7

Journal of Materials in Civil Engineering. ... Assessment of Scaling Durability of Concrete with CFBC Ash by Automatic Classification Rules ... High-Performance ...

Frost salt scaling resistance of concrete containing CFBC fly

Oct 11, 2008 · The possibility for using coal combustion by-products in concrete exposed to frost-salt aggression was investigated. The research was aimed to assess an influence addition of circulating fluidized bed combustion (CFBC) fly ash on frost-salt scaling of air-entrained concrete. For evaluation of the resistance of concrete to frost salt scaling the test called “depth sensing indentation” (DSI ...

Prediction of Scaling Resistance of Concrete Modified with

The goal of the study was applying machine learning methods to create rules for prediction of the surface scaling resistance of concrete modified with high-calcium fly ash.

Experimental Comparison of Methods to Assess the Durability

Oct 12, 2017 · In cold climates, deicing agents are used to reduce traffic problems due to ice and snowdrifts. However, the use of deicing salts results in accelerated scaling of concrete surfaces on account of damage caused by salt combined with rapid freeze–thaw cycles. These cycles reduce user safety and the service life of concrete pavement. Moreover, scaling is the deterioration of concrete due to the ...

SIPS 2018

Welcome to the 2018 Sustainable Industrial Processing Summit and Exhibition. Following the previous rich tradition, the summit will cover 3 sustainability pillars: Science, Technology & Industry, Governance & Management and Education & Civil Society.

Roads and Bridges

Roads and Bridges – Drogi i Mosty, 12 ,1, 2013, 83 - 97 Yazici H.: The effect of silica fume and high-volume class C fly ash on mechanical properties, chloride penetration and freeze-thaw resistance of self-compacting concrete.

Roads and Bridges - Drogi i Mosty

Roads and Bridges - Drogi i Mosty. ... Marks M.: Assessment of scaling durability of concrete with CFBC ash by automatic classification rules. ... Frost salt scaling ...

Durability of Concrete in Saline Environment

Besides studies of the surface scaling at field exposure, field exposed concrete is also tested for resistance to salt scaling in a standard laboratory test (the Borås Method, SS 13 72 44) 19,101. 11 Reinforced concrete slabs, height l 00 cm, width 70 cm, thickness 10-20 cm, are mounted on the sides of the pontoons. A submerged-a

Environmental impact and durability of carbonated calcium

Aug 04, 2019 · This paper also summarises the performance and durability of CSC-C and OPC concrete (OPC-C). Freeze–thaw and scaling resistance were evaluated as per ASTM C666 and ASTM C672, respectively, the concentrations of ionic species leached from the concretes were measured, efflorescence was evaluated in pavers partially submerged in water, and the ...

DEICING SALT SCALING RESISTANCE OF HIGH-VOLUME FLY ASH

salt scaling resistance of air-entrained concrete incorporating various sources of Class C, and a Class F fly ash. RESEARCH SIGNIFICANCE The major aim of this work was to evaluate salt scaling resistance of concrete made with Class C and Class F fly ash. The properties measured were compressive strength and salt scaling resistance with

Concrete Durability - an overview

In many cases concrete durability is threatened by natural weathering or even by chemical attack (section 16.6.8), but only in certain locations or applications is concrete subjected to mechanical wear, including abrasion, attrition and erosion of concrete surfaces. In such places, clearly it is the quality and properties of the exposed surface ...

Application of machine learning to determine properties of

The rules generated by computer programs AQ21 and WEKA using J48 algorithm provided means for adequate categorization of plain concrete and concrete modified with CFBC fly ash as materials of good and acceptable resistance to chloride penetration as well as materials resistant or not resistant to the surface scaling caused by freezing cycles.

Michal A. Glinicki

Assessment of scaling durability of concrete with CFBC ash by automatic classification rules ... Automatic categorization of chloride migration into concrete modified with CFBC ash M Marks, D Jozwiak-Niedzwiedzka, MA Glinicki Computers and Concrete 9 (5), 375-387 ... Effect of the loading rate on the tensile strength of concrete MA Glinicki MRS ...

Kinetic Study of Belite Formation in Cement Raw Meals Used

Calcium looping technology could be one of the most efficient ways to drastically reduce the carbon footprint of cement manufacture since CaCO3 is a major component of the raw meal used to produce clinker. However, calcined raw meal can be a poor CO2 sorbent due to the fact that the formation of Ca2SiO4 (belite) causes a reduction in the amount of free CaO. Effective reaction …

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