Download or read book Fly Ash as a Construction Material for Highways written by James F. Meyers and published by . This book was released on 1976 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Methods for Evaluating Fly Ash for Use in Highway Concrete written by Lawrence L. Sutter and published by Transportation Research Board. This book was released on 2013 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: "TRB's National Cooperative Highway Research Program (NCHRP) 749: Methods for Evaluating Fly Ash for Use in Highway Concrete presents suggested changes to coal fly ash specifications and test protocols contained in American Association of State Highway and Transportation Officials (AASHTO) Standard Specifications for Transportation Materials and Methods of Sampling and Testing (AASHTO M 295). The changes suggested include modifications to the test methods currently specified for evaluating acceptability of fly ash for use in highway concrete as well as the introduction of new test methods for enhancing such evaluations. Attachment C: Details of the Research into Methods for Evaluating Fly Ash Use in Highway Concrete is only available online."--Publisher description.

Download or read book Quality Control of Highway Concrete Containing Fly Ash written by Woodrow J. Halstead and published by . This book was released on 1981 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is essentially a synthesis of pertinent information concerning the use of fly ash as an ingredient in concrete for highway construction. It has been prepared to provide a basis for an adequate response by the Department of Highways and Transportation to requirements of the Resource Conservation and Recovery Act and the Environmental Protection Agency pertaining to the use of this by-product in concrete purchased with federal funds. Special attention is given to the quality control and acceptance problems associated with highway usage of fly ash concrete, with emphasis on problems relating to air entrainment. References to the background literature that established the suitability of fly ash as a pozzolan and its use in concrete are The requirements for fly ash as set forth in ASTM Specification C618 are reviewed and the- characteristics to be expected from concrete containing fly ash are discussed. It is recommended that the Virginia Department of Highways and Transportation permit the use of fly ash in concrete at the option of the contractor with prior approval by the state. It is also recommended that suitable specifications for this use be prepared following the guidelines previously recommended by the Concrete Research Advisory Committee.

Download or read book The Use of Fly Ash in Highway Construction written by Vernon J. Marks and published by . This book was released on 1990 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1982 the Iowa DOT allowed a successful bidder the option of submitting materials and proportions using fly ash to produce a portland cement concrete (PCC) paving mixture to meet a specified compressive strength. The contractor, Irving F. Jensen, received approval for the use of a concrete mixture utilizing 500 lbs. of portland cement and 88 lbs. of fly ash as a replacement of 88 lbs. of portland cement. The PCC mixture was utilized on the Muscatine County US 61 relocation bypass paved as project F-61-4(32)--20-70. A Class "C" fly ash obtained from the Chillicothe electric generating plant approximately 100 miles away was used in the project. This use of fly ash in lieu of portland cement resulted in a cost savings of $64,500 and an energy savings of approximately 16 billion BTU. The compressive strength of this PCC mixture option was very comparable to concrete mixtures produced without the use of fly ash. The pavement has been performing very well. The substitution of fly ash for 15% of the cement has been allowed as a contractor's option since 1984. Due to the cost savings, it has been used in almost all Iowa PCC paving since that time.

Download or read book An Introduction to Fly Ash in Concrete Pavement written by J. Paul Guyer, P.E., R.A. and published by Guyer Partners. This book was released on 2019-10-12 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introductory technical guidance for civil engineers interested in fly ash in portland cement concrete pavement for streets and highways. Here is what is discussed: 1. FLY ASH AS AN ENGINEERING MATERIAL 2. HIGHWAY APPLICATIONS 3. FLY ASH IN PORTLAND CEMENT CONCRETE.

Download or read book Use of Fly Ash in Highway Construction written by Jonathan A. Annable and published by . This book was released on 1986 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Use of Class C Fly Ash in Highway Construction written by Ferguson, P. Joy and published by . This book was released on 1990 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much attention has been focused in recent years on conserving natural resources and energy. Numerous waste products and/or byproducts from various industrial and commercial processes, normally deposited in landfills, have been proposed for use as alternate construction materials. One byproduct that has shown considerable promise as an alternate construction material is fly ash when used in a lime-fly ash (LFA) base course. This paper describes the use of this waste product in LFA stabilized granular materials as an alternative to cement treated materials for base construction. The primary disadvantage of a cement treated base (CTB) is the environmental (shrinkage) cracking that leads to the infiltration of rain water and incompressibles, pumping of subgrade soils, spalling of the crack faces and other problems that adversely effect pavement performance. It has been shown that the slow strength gain associated with LFA leads to a condition where the microcracks in the material are generally healed before they can develop into macrocracks. Continued chemical reactions, known as autogenous healing, within the mix are largely responsible for this behavior.

Download or read book Fly Ash Facts for Highway Engineers written by American Coal Ash Association and published by . This book was released on 2003 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coal fly ash is a coal combustion product that has numerous applications in highway construction. Since the first edition of "Fly Ash Facts for Highway Engineers" in 1986, the use of fly ash in highway construction has increased and new applications have been developed. This document provides basic technical information about the various uses of fly ash in highway construction that advances its use in ways that are technically sound, commercially competitive and environmentally safe.

Download or read book An Introduction to Fly Ash in Concrete Pavement written by J. Paul Guyer and published by . This book was released on 2019-10-12 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introductory technical guidance for civil engineers interested in fly ash in portland cement concrete pavement for streets and highways. Here is what is discussed:1. FLY ASH AS AN ENGINEERING MATERIAL2. HIGHWAY APPLICATIONS3. FLY ASH IN PORTLAND CEMENT CONCRETE.

Download or read book Use of Fly Ash in Concrete written by and published by . This book was released on 1989 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Use of Fly Ash in Highway Construction written by H. D. Clemmons and published by . This book was released on 1983 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CIGOS 2019 Innovation for Sustainable Infrastructure written by Cuong Ha-Minh and published by Springer Nature. This book was released on 2019-10-10 with total page 1264 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents selected articles from the 5th International Conference on Geotechnics, Civil Engineering Works and Structures, held in Ha Noi, focusing on the theme “Innovation for Sustainable Infrastructure”, aiming to not only raise awareness of the vital importance of sustainability in infrastructure development but to also highlight the essential roles of innovation and technology in planning and building sustainable infrastructure. It provides an international platform for researchers, practitioners, policymakers and entrepreneurs to present their recent advances and to exchange knowledge and experience on various topics related to the theme of “Innovation for Sustainable Infrastructure”.

Download or read book Low Cost Fly Ash Sand Stabilized Roadway written by S. J. Klassen and published by . This book was released on 1986 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fly ash, a by-product of coal-fired electricity generating plants, has for years been promoted as a material suitable for highway construction. Disposal of the large quantities of fly ash produced is expensive and creates environmental concerns. The pozzolanic properties make it promotable as a partial Portland cement replacement in pc concrete, a stabilizer for soil and aggregate in embankments and road bases, and a filler material in grout. Stabilizing soils and aggregates for road construction has the potential of using large quantities of fly ash. Iowa Highway Research Board Project HR-194, "Mission-Oriented Dust Control and Surface Improvement Processes for Unpaved Roads", included short test sections of cement, fly ash, and salvaged granular road material mixed for a base in western Iowa. The research showed that cement fly ash aggregate (CFA) has promise as a stabilizing agent in Iowa. There are several sources of sand that when mixed with fly ash may attain strengths much greater than fly ash mixed with salvaged granular road material at little additional cost

Download or read book Research Technology Transporter written by and published by . This book was released on 1998 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Use of Waste Materials in Highway Construction written by Imtiaz Ahmed and published by . This book was released on 1991 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Introduction to Fly Ash in Concrete Pavement for Professional Engineers written by J. Paul Guyer, P.E., R.A. and published by Guyer Partners. This book was released on 2023-10-13 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introductory technical guidance for civil engineers, highway engineers, structural engineers and construction managers interested in fly ash incorporated into concrete mixtures for buildings, street and highway pavements, and various concrete infrastructure. Here is what is discussed: 1. FLY ASH AS AN ENGINEERING MATERIAL, 2. HIGHWAY APPLICATIONS, 3. FLY ASH IN PORTLAND CEMENT CONCRETE.

Download or read book Use of Fly Ash in Concrete by State Transportation and Highway Departments written by Woodrow J. Halstead and published by . This book was released on 1980 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides a summary of replies to a questionnaire on the use of fly ash and blended cement (Type IP) in concrete. The questionnaire was directed to members of the Subcommittee on Materials of the American Association of State Highway Officials. The states' representatives on this subcommittee are usually the state materials engineers. The subcommittee also includes associate members from some of the provinces of Canada and some federal agencies involved in roadway or airport construction. Fifty-nine agencies responded to the questionnaire. These included all of the state highway and transportation departments, the District of Columbia, three provinces of Canada, and five federal agencies. Twenty-four agencies reported that they made no use of either fly ash added to the concrete as an admixture (FAC) or of concrete made with Type IP blended cement (IPC). The remaining 35 agencies permitted the use of either IPC or FAC, or both, usually at the option of the contractor. However, only 4 states had placed more than 100 lane-miles of FAC, and only two states had placed more than 100 lane-miles of IPC. This lack of large usage of FAC or IPC is believed to reflect a lack of significant economic incentives for use by a state or contractor under present circumstances. The initial capital investment for the required separate silos or storage bins for fly ash deters a small contractor from using FAC, as does the increased quality control testing. IPC is not attractive since the blended cement (Type IP) usually costs the same as regular portland cement. Accordingly, the more familiar product (regular portland cement) is selected for use when both types are available. The states making substantial use of either of FAC of IPC all report satisfactory performance. The primary control problem reported is that of assuring the proper amount of entrained air. When fly ash is used, more air-entraining agent is required to entrain the desired amount of air than is required for similar concrete "without fly ash. Prior approval of the source of the fly ash is required by almost all agencies. The specification most often cited by all agencies is ASTM Specification C618 Class F (fly ash). However, in all cases the loss on ignition is limited to a maximum of 6.0% in lieu of the 12.0% limit given in C618. Some state specifications also differ from C618 in the limitations on chemical composition but it is likely that all materials being used would meet C618 requirements, except where fly ash high in calcium oxide is encountered.