Download or read book The Uniformity and Influence of Silica Fume from a U S Source on the Properties of Portland Cement Concrete written by MF. Pistilli and published by . This book was released on 1984 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silica fume is formed during the manufacture of ferrosilicon in electric submerged-arc furnaces. The use of silica fume has been evaluated in portland cement concrete. Thirty samples of silica fume, each collected on consecutive days from SKW Alloys, Inc. in Calvert City, KY, were analyzed for routine quality control tests of a pozzolan. Six of these samples, representing the variations of the routine tests, were tested for complete ASTM Specification for Fly Ash and Raw or Calcined Natural Pozzolan for Use as a Mineral Admixture in Portland Cement Concrete (C 618) conformance. Laboratory mixtures of air-entrained and nonair-entrained concrete, containing a representative sample of silica fume, were cast for compressive strength (1 to 120 days), drying shrinkage, and time of set. Although a classification for silica fume is not currently contained in ASTM C 618, all of the samples tested were found to conform when compared to the requirements of this standard, with the exception that the water requirement was excessive.
Download or read book Condensed Silica Fume in Concrete written by V.M. Malhotra and published by CRC Press. This book was released on 2018-01-18 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the first of its kind, this book presents a balanced view of the effect of condensed silica fume on the physical, chemical, mechanical, and durability aspects with respect to cement paste, mortar, and concrete. It discusses the nature and types of condensed silica fume, physical characteristics, product variation and problems involved in its handling and transportation.
Download or read book The Variability of Condensed Silica Fume from a Canadian Source and Its Influence on the Properties of Portland Cement Concrete written by MF. Pistilli and published by . This book was released on 1984 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Condensed silica fume is formed during the manufacture of ferrosilicon in electric submerged-arc furnaces. The use of condensed silica fume has been evaluated in portland cement concrete. Thirty-two samples of condensed silica fume, each collected on consecutive days, were analyzed for chemical and physical routine quality control tests of pozzolan. Eight of these samples, representing the variations of the routine tests, were tested for complete ASTM Specification for Fly Ash and Raw or Calcined Natural Pozzolan for Use as a Mineral Admixture in Portland Cement Concrete (C 618) conformance. All of the samples tested were found to conform to ASTM C 618 with the exception that the water requirement was excessive.
Download or read book Chemical and Physical Effects of Silica Fume on the Microstructure and Mechanical Properties of Concrete written by Rachel Jean Detwiler and published by . This book was released on 1988 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ACI Manual of Concrete Practice written by American Concrete Institute and published by . This book was released on 2002 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Utilizing Silica Fume in Portland Cement Pervious Concrete written by Daniel Allen Mann and published by . This book was released on 2014 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silica fume has long been used as a supplementary cementing material to provide a high density, high strength, and durable building material. Silica fume has a particle size a fraction of any conventional cement, which allows it to increase concrete strength by decreasing the porosity especially near the aggregates surface. Because Portland Cement Pervious Concrete (PCPC) has a smaller bond area between aggregate and paste, silica fume has significant impacts on the properties of the PCPC. The research in this paper studies the workability of a cement paste containing silica fume in addition to analyzing the results of testing on Portland Cement Pervious Concrete mixtures that also contained silica fume. Testing conducted included a study of the effects of silica fume on cement's rheological properties at various dosage rates ranging from zero to ten percent by mass. It was determined that silica fume has negligible effects on the viscosity of cement paste until a dosage rate of five percent, at which point the viscosity increases rapidly. In addition to the rheological testing of the cement paste, trials were also conducted on the pervious concrete samples. Sample groups included mixes with river gravel and chipped limestone as aggregate, washed and unwashed, and two different void contents. Workability tests showed that mixtures containing a silica fume dosage rate of 5 percent or less had comparable or slightly improved workability when compared to control groups. Workability was found to decrease at a 7 percent dosage rate. Samples were tested for compressive strength at 7 and 28 days and splitting tensile strength at 28 days. It was found in most sample groups, strength increased with dosage rates of 3 to 5 percent but often decreased when the dosage reached 7 percent. Abrasion testing showed that both samples containing washed aggregate and samples containing silica fume exhibited a reduced mass loss.
Download or read book Condensed Silica Fume in Concrete written by and published by Thomas Telford. This book was released on 1988 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides a comprehensive review of the properties of concrete containing condensed silica fume(CSF) at each stage of hardening, emphasizing the improvements gained in durability.
Download or read book 8o Congresso Internacional de Qu mica Do Cimento Special reports written by and published by . This book was released on 1986 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Ground Granulated Blast Furnace Slag in Portland Cement Concrete written by Irene K. LaBarca and published by . This book was released on 2007 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Investigation of Concrete Containing Condensed Silica Fume written by Hamdi Celik Ozyildirim and published by . This book was released on 1986 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: The properties of hydraulic cement concretes containing silica fume were investigated to assess their suitability for use in overlays with s minimum thickness of 1 1/4 in. The properties studied were compressive and flexural strengths, bond strength, modulus of elasticity, permeability, freeze-thaw resistance, thermal expansion, and drying shrinkage. The characteristics of sir voids in the hardened concrete were determined by petrographic examination. The study was conducted in two stages: the first to determine the mixture proportions that would yield satisfactorily high strengths and low permeabilities, and the second to conduct the main testing program. Silica fume from two sources was used. Concretes made with silica fume from either source at a water-cement ratio of 0.40 or lower and s replacement rate of 5% yielded the desirable properties. It is expected that concretes made with silica fume can provide a cost-effective protective system for bridge decks when placed in overlays with s minimum thickness of 1 1/4 in.
Download or read book Guide for the Use of Silica Fume in Concrete written by ACI Committee 234 and published by . This book was released on 1996 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanical Properties Durability and Drying Shrinkage of Portland Cement Concrete Incorporating Silica Fume written by G. G. Carette and published by . This book was released on 1982 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pozzolanic and Cementitious Materials written by V. M. Malhotra and published by Taylor & Francis. This book was released on 1996 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pozzolanic and cementitious admixtures are becoming increasingly important to enhance the environmental friendliness of portland-cement concrete and to improve workability, durability, and other properties of the material. This book provides a simple but comprehensive review of the composition and performance of important pozzolanic and cementitious admixtures, such as fly ash, granulated blast-furnace slag, natural pozzolans, silica fume, rice-husk ash and metakaolin.
Download or read book Properties of Portland Cement silica Fume Pastes part 2 Mechanical Properties written by National Research Council Canada. Division of Building Research and published by . This book was released on 1985 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Compilation of Abstracts of Papers from Recent International Conferences and Symposia on Condensed Silica Fume in Concrete written by E. Douglas and published by Canada Centre for Mineral and Energy Technology. This book was released on 1988 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Properties of Portland Cement silica Fume Pastes written by R. F. Feldman and published by . This book was released on 1985 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Silica Fume on Properties and Performance of High Strength Normal Weight and Lightweight Concrete written by Mongkol Bubphachat and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
