Fly Ash in Concrete: Properties and performance (Rilem by K. Wesche

By K. Wesche

This booklet is a state of the art record which files present wisdom at the houses of fly ash in concrete and using fly ash in development. It contains RILEM tips about fly ash in concrete and a accomplished bibliography together with over 800 references.

Show description

Read or Download Fly Ash in Concrete: Properties and performance (Rilem Report) PDF

Best methods & materials books

Prophet Elijah in the Development of Judaism (Littman Library of Jewish Civilization)

This in-depth mental examine indicates how a dead ringer for Elijah embodied the hopes of the Jewish humans via background, and in addition throws mild at the Elijah determine in Christianity and Islam.

Silos: Fundamentals of theory, behaviour and design

Bringing jointly the top ecu services in behaviour and layout of silos, this crucial new ebook is a necessary reference resource for all inquisitive about present difficulties and advancements in silo know-how. Silos are utilized in a big diversity of industries and the dealing with features of many business fabrics require assorted methods for profitable, least expensive installations.

Sustainability of Construction Materials (Woodhead Publishing in Materials)

Till lately, the improvement of creating fabrics has fascinated with generating more cost-effective and harder building fabrics. Now extra awareness is given to the environmental concerns. Sustainability of development fabrics brings jointly a wealth of modern examine at the topic. It presents a finished and certain research of the sustainability of those fabrics: aggregates, wooden, bamboo, vegetable fibers, masonry, cement, concrete and cement alternative fabrics, metals and alloys, glass, and engineered wooden items.

Additional info for Fly Ash in Concrete: Properties and performance (Rilem Report)

Sample text

6 Density and Density Distribution There are various different concepts for determining density in the field of pulverized materials, especially fly ashes, as is apparent from /J 9/ and ASTM Designation E 12–70 (Reapproved 1981). ASTM Standard C 188–84 deals with specific gravity determination in cements. In cement applications, water must be replaced by an organic liquid. Since fly ashes contain some water-soluble compounds, the use of non-aqueous solvents for determining specific gravity is recommended.

The following factors were noted: — Satisfactory high strengths can be achieved with concrete incorporating a high percentage of fly ash and super-plasticizers. — The mechanical properties of the water-reduced, super-plasticized fly-ash concrete were superior to those of the reference fly-ash concrete. — The workabability may impose a limitation on use for cast-in-place construction, due to a gluey texture at slumps between 65 and 75 mm. — Superplasticizers N and L both increased the setting time markedly, but it is not possible to determine from the data whether fly ash also influenced settime.

Ogawa et al. 0 for the Ca/Si ratio from their scanning electron microscopic/energy dispersive spectroscopic measurements. Presumably their measured value was high, because the solid material between the particles contained both the C-S-H and Ca (OH)2, whereas Mohan and Taylor were able to separate the particles more readily after grinding their samples to a fine powder. Close to the fly-ash particles, Ogawa et al. 5 for the Ca/Si ratio, in better agreement with Mohan and Taylor. 2 Effect of Fly Ash on C3A and C4AF Hydration Plowman and Cabrera /P 16, C 27, C 8/ found fly ash a more effective retarder of C3A and C4AF hydration than an equivalent quantity of gypsum.

Download PDF sample

Rated 4.76 of 5 – based on 31 votes