摘要:

ABSTRACTThis investigation determined that the rate of firing, as specified in the standard test for the firing behavior of fireclay refractories, could be reduced without materially affecting the accuracy of the data obtained. The rate of cooling is found to be the cause of variations between test results and laboratory and factory results.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1932.tb13885.x

出版商:Blackwell Publishing Ltd    

年代:1932

数据来源: WILEY

摘要:

ABSTRACTThe action of coal‐ash slags on firebrick refractories was studied by microscopic examination of thin sections prepared from quenched samples of ash and refractory heated together. The eight refractories used varied as to clays, method of fabrication, grind, and firing treatment. Six different coal ashes varied from highly corrosive to noncorrosive ashes. Samples were quenched at intervals in the range of 2200 to 2800°F and the critical temperature or maximum safe operating temperature of all combinations of slag and refractory was determined. These values are presented together with a discussion of the various minerals form

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1932.tb13886.x

出版商:Blackwell Publishing Ltd    

年代:1932

数据来源: WILEY

摘要:

ABSTRACTThe literature on refractory slag tests is reviewed. The various methods are divided into eight different classifications and references to the literature are given.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1932.tb13887.x

出版商:Blackwell Publishing Ltd    

年代:1932

数据来源: WILEY

摘要:

ABSTRACTA test simulating the heat absorption and emission of checker brick was developed. The results of such tests on fire brick of two sizes, made by three different processes and procured from four fireclay districts, are given and correlated with the bulk specific gravity and porosity of the brick.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1932.tb13888.x

出版商:Blackwell Publishing Ltd    

年代:1932

数据来源: WILEY

摘要:

ABSTRACTA three‐variable alignment chart is presented which has been found useful for the solution of the modulus of rupture equation for cylindrical test pieces. The chart is easily prepared and its use eliminates routine calculations. Factors affecting the accuracy are mentione

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1932.tb13889.x

出版商:Blackwell Publishing Ltd    

年代:1932

数据来源: WILEY

摘要:

ABSTRACTA number of ceramic clays in the plastic condition were held between water‐permeable pistons under mechanical pressure of from 200 to 20,000 pounds per square inch in contact with water at atmospheric pressure until equilibrium was reached; the water in the pistons was removed by compressed air, the pressure released. and the moisture content, density, drying shrinkage, and other properties of the clays determined. In every case, the moisture content and drying shrinkage decreased with increasing pressure and with some clays at high pressures expansion occurred on drying. Rather complete data are given for a number of clays and their theoretical and practical significance is discusse

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1932.tb13890.x

出版商:Blackwell Publishing Ltd    

年代:1932

数据来源: WILEY

摘要:

ABSTRACTA study was made of the petrographical and mineralogical characteristics of Illinois underclays, which were found to be mainly potash beidellite purified before deposition under the conditions of the Pennsylvanian period. Feldspars, muscovite, quartz, and other minerals were mixed with the clay minerals during deposition in water, but later the carbonates were removed. The weathering profiles developed on the underclays resemble the Wisconsin till.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1932.tb13891.x

出版商:Blackwell Publishing Ltd    

年代:1932

数据来源: WILEY

摘要:

ABSTRACTA relation between the per cent absorption and the electrical conductivity of building brick has been found which can be expressed by the empirical equationLikewise, a relation between the modulus of rupture and the conductivity is of the formThe constants of the two equations may be evaluated to give the following equations:These relations, which were developed from tests on building brick, can be readily applied to other forms of structural silicates.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1932.tb13892.x

出版商:Blackwell Publishing Ltd    

年代:1932

数据来源: WILEY

摘要:

ABSTRACTThe reasons for the corrective effect on copperheading of a modem double glass ground coat are explained. The boiling tendency of the steel sheets seems to be the primary Cause of copperheading, black specks, and a certain amount of fishscale. Pearlite has been found in the steel underneath copperheaded areas.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1932.tb13893.x

出版商:Blackwell Publishing Ltd    

年代:1932

数据来源: WILEY