All issues
Volume 1964 (1964)
- Issue 73 Pages 227-
- Issue 72 Pages 185-
- Issue 71 Pages 149-
- Issue 70 Pages 96-
- Issue 69 Pages 55-
- Issue 68 Pages 5-
Predecessor
Volume 1964, Issue 69
Displaying 1-5 of 5 articles from this issue
- |<
- <
- 1
- >
- >|
-
Manjiro NAKAHARA, Tsugio MIYAKAWA, Kosaku OGIMOTO1964 Volume 1964 Issue 69 Pages 55-65
Published: March 01, 1964
Released on J-STAGE: March 07, 2011
JOURNAL FREE ACCESSWe prepared various blended cements from commercial ordinary portland cement by mixing D.D. residue instead of fine limestone powder, blast-furnace slag, expanded vermiculite powder, asbestos tailing and cal., and physical test were conducted on some properties of the prepared blended cements to investigate the adaptability of admixture for masonry cement.
From these experimental results, we prepared some masonry cements and made experiment on various physical properties beeing supposed to be important for masonry cement (setting time, water retention property, water absorption, compressive and bending strength, shrinkage, viscosity, hardness, crack, soundness).
While, we tried practical plastering works with these cements.
The result obtained are summarized as follows.
1) In comparison with commercial ordinary cement, the prepared masonry cement were considerably superior in workability, but were inferior in hardness.
2) The prepared masonry cements showed larger water absorption and shrinkage than commercial ordinary cement and fine net-work crack grow in the practical plastered walls.
3) As the prepared masonry cements were more excellent in sand carring capacity than ordinary cement, in case of using poor-mix mortar, crack were remarkably decreased.View full abstractDownload PDF (2937K) -
Resistance to Flow of Gases through Calcining-and Cooling Zones. Fundamental Studies on Lime Shaft Kilns (4)Kiyoshi TERADA, Kazunobu KAKIMOTO, Jun NANBA1964 Volume 1964 Issue 69 Pages 66-70
Published: March 01, 1964
Released on J-STAGE: March 07, 2011
JOURNAL FREE ACCESSIn the previous paper, data on the coefficient of resistance to fluid flow through preheating zone in lime shaft kiln fired with solid fuels were presented by the authors.
Following that work, this paper presents the results of a experimental investigation on the flow characteristics for the calcining and the cooling zones. Results were obtained under conditions of normal running of the test lime shaft kiln reported in the previous paper. In the calcining zone, the resistance to fluid flow is not independent of the permeability of the burden materials, the size distribution of solid, the rate of burning of fuel, the rate of calcining of limestone, and the distribution of temperature within the stack. Because of these many variables and the general uncertainty of the state of knowledge of the subject, a relationship between the measured pressure drop per unit of length and the apparent linear rate of air flow for combustion blown into the kiln stack was presented in a graphic form for the calcining zone. In the cooling zone, the flow characteristics showed no substantially different phase from that of the preheating zone on the coefficient of restance to fluid flow, but the data obtained could be represented by the just same empirical relation as obtained for the preheating zone.View full abstractDownload PDF (733K) -
[in Japanese], [in Japanese], [in Japanese]1964 Volume 1964 Issue 69 Pages 71-78
Published: March 01, 1964
Released on J-STAGE: March 07, 2011
JOURNAL FREE ACCESSDownload PDF (1089K) -
[in Japanese], [in Japanese]1964 Volume 1964 Issue 69 Pages 79-86
Published: March 01, 1964
Released on J-STAGE: March 07, 2011
JOURNAL FREE ACCESSDownload PDF (724K) -
1964 Volume 1964 Issue 69 Pages e1
Published: 1964
Released on J-STAGE: March 07, 2011
JOURNAL FREE ACCESSDownload PDF (94K)
- |<
- <
- 1
- >
- >|