Further Investigations Into the Deicer Scaling of Slag Cement Concrete with Emphasis on Surface Properties PDF Download

Author: Gopalan Narayanan
Publisher:
ISBN:
Category :
Languages : en
Pages : 450

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Author: Martina Teresa Driscoll
Publisher:
ISBN:
Category :
Languages : en
Pages : 524

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Author: Irene K. LaBarca
Publisher:
ISBN:
Category : Portland cement
Languages : en
Pages : 98

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Book Description
This research examined the properties of concrete containing grade 120 slag cement at replacement levels of 0%, 30%, and 50%. The primary concrete properties studied were compressive strength, split-tensile strength, and deicer scaling resistance. Material variations included four sources of ordinary portland cement and two types of coarse aggregate. Strength properties were studied at room temperature and 40°F mix and curing conditions. Deicer scaling resistance was studied for concrete cured under six curing conditions. Carbonation of concrete cured under these six conditions was also investigated.

Author: R. Doug Hooton
Publisher:
ISBN:
Category : Pavements, Concrete
Languages : en
Pages : 60

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With the use of supplementary cementing materials (SCMs) in concrete mixtures, salt scaling tests such as ASTM C672 have been found to be overly aggressive and do correlate well with field scaling performance. The reasons for this are thought to be because at high replacement levels, SCM mixtures can take longer to set and to develop their properties: neither of these factors is taken into account in the standard laboratory finishing and curing procedures. As a result, these variables were studied as well as a modified scaling test, based on the Quebec BNQ scaling test that had shown promise in other research. The experimental research focused on the evaluation of three scaling resistance tests, including the ASTM C672 test with normal curing as well as an accelerated curing regime used by VDOT for ASTM C1202 rapid chloride permeability tests and now included as an option in ASTM C1202. As well, several variations on the proposed draft ASTM WK9367 deicer scaling resistance test, based on the Quebec Ministry of Transportation BNQ test method, were evaluated for concretes containing varying amounts of slag cement. A total of 16 concrete mixtures were studied using both high alkali cement and low alkali cement, Grade 100 slag and Grade 120 slag with 0, 20, 35 and 50 percent slag replacement by mass of total cementing materials. Vinsol resin was used as the primary air entrainer and Micro Air® was used in two replicate mixes for comparison. Based on the results of this study, a draft alternative test method to ASTM C762 is proposed.

Author: Maria I. Falconi
Publisher:
ISBN:
Category :
Languages : en
Pages : 662

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Author: Roberto Caldas Pinto
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 100

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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. An accelerated aging regime involving temperature, cyclic loading, and freeze-thaw cycles was employed in this project to simulate natural long-term aging processes. This literature review describes the general concept of aging of materials and defines accelerated aging. It describes accelerated aging procedures and applications of accelerated aging, and discusses thermal aging, the most common accelerated aging technique. Accelerated aging techniques and applications for several types of materials (i.e., metals, polymers, asphalts, wood, and masonry) are described, followed by a review of accelerated aging procedures and applications for PCC.

Author: Irene K. LaBarca
Publisher:
ISBN:
Category :
Languages : en
Pages : 320

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Author: Nor Hidayah Hazali
Publisher:
ISBN:
Category : Building materials
Languages : en
Pages : 87

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Consisting of silicates, iron and other compounds, slag cement is the by-product of molten iron production in a blast-furnace. Also known as ground granulated blast¬furnace slag, slag cement often used in concrete requiring maximum durability and higher strength. This study is to investigate the behavior of slag cement as a partial replacement material for Portland cement up to 30% and 40% of slag cement and its effectiveness in improving the properties of mortar. It was achieved by compression test and flexural test conducted to determine the highest strength development between samples for 7, 14 and 28 age days of curing time. There were three types of samples that has been tested according to BS 4551: Part 1: 1998, which are mortar containing 30% of slag cement, 40% of slag cement and mortar with plain ordinary Portland cement as the control samples. At the age of 28 days of curing, mortar containing 30% and 40% of slag gave compressive strength of 5.945 MPa, 11.51 MPa for air curing and 6.076 MPa, 12.34 MPa for water curing respectively and gave flexural strength of 2.2 MPa, 2.384 MPa for air curing and 2.249 MPa, 2.549 MPa for water curing respectively. Besides, this studies also to investigate the effect of curing condition to strength development and drying shrinkage of samples containing 30% and 40% of slag, where samples with water curing achieved higher strength development and low shrinkage rate than the samples with air curing. The used of concrete as samples besides mortar is recommended for future works and studies. -Author.

Author: Ivanka Netinger Grubeša
Publisher: Woodhead Publishing
ISBN: 0081003765
Category : Technology & Engineering
Languages : en
Pages : 196

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Characteristics and Uses of Steel Slag in Building Construction focuses predominantly on the utilization of ferrous slag (blast furnace and steel slag) in building construction. This extensive literature review discusses the worldwide utilization of ferrous slag and applications in all sectors of civil engineering, including structural engineering, road construction, and hydro-technical structures. It presents cutting-edge research on the characteristics and properties of ferrous slag, and its overall impact on the environment. Comprehensively reviews the literature on the use of blast furnace and steel slag in civil engineering Examines the environmental impact of slag production and its effect on human health Presents cutting-edge research from worldwide studies on the use of blast furnace and steel slag

Author: S. van der Zwaag
Publisher: IOS Press
ISBN: 1614995141
Category : Science
Languages : en
Pages : 308

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Book Description
In 2006 the Dutch government funded an 8 year and 20 million euro research program on Self Healing Materials. The research was not to be restricted to one material class or one particular healing approach. It was to explore all opportunities to create self healing behavior in engineering and functional materials and to bring the new materials to a level where they could be tested in real life applications. At its launch, the IOP program was the very first integrated multi-material approach to this field in the world. The research was to be conducted at Dutch universities working in collaboration with industry. With the IOP Self Healing Materials program coming to an end, this book presents the highlights of the pioneering research in the field of self healing materials in the Netherlands. Given the diversity of topics addressed, the book will be of value to all materials scientists working in the field of materials and materials by design in particular, as well as industrial engineers and developers with an interest in increasing the reliability and reducing the maintenance of their products. The book will also be an inspiration to students and show them how an unspecified concept of self healing can be translated to new materials with exceptional behavior.