Hydraulic Cement: Its Properties, Testing, and UseJ. Wiley & sons, 1906 - 300 sayfa |
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53 sonuçtan 1-5 arası sonuçlar
Sayfa 1
... quantity of water . The slaking of lime is due to its rapid hydra- tion when in contact with water , and the process is accom- panied by a considerable increase in the volume of the mass of lime and by a rise in temperature . If the ...
... quantity of water . The slaking of lime is due to its rapid hydra- tion when in contact with water , and the process is accom- panied by a considerable increase in the volume of the mass of lime and by a rise in temperature . If the ...
Sayfa 8
... water . Hy- draulic lime proper includes that of index varying from about 20/100 to 40/100 . These may harden in 2 ... quantity of the hydraulic ingredients to make a safe natural cement . When burned at a low temperature it may give ...
... water . Hy- draulic lime proper includes that of index varying from about 20/100 to 40/100 . These may harden in 2 ... quantity of the hydraulic ingredients to make a safe natural cement . When burned at a low temperature it may give ...
Sayfa 9
... water it is usually considered as being non - hydraulic . In determining the ... quantity of impurities of an inert character it may contain . When made into ... quantities too small to render the lime hydraulic , impart a certain power ...
... water it is usually considered as being non - hydraulic . In determining the ... quantity of impurities of an inert character it may contain . When made into ... quantities too small to render the lime hydraulic , impart a certain power ...
Sayfa 10
... water . This hydration , or slaking , pro- duces a rise in temperature and an increase in volume which vary in ... quantity of water is to be avoided , the amount necessary being such as will reduce the lime after slaking to a thick ...
... water . This hydration , or slaking , pro- duces a rise in temperature and an increase in volume which vary in ... quantity of water is to be avoided , the amount necessary being such as will reduce the lime after slaking to a thick ...
Sayfa 11
... quantity of water , then covered with sand and allowed to stand . The difficulty in using these methods is to get just the right quantity of water to make the slaking com- plete . Lime so slaked may be barreled and shipped in form of ...
... quantity of water , then covered with sand and allowed to stand . The difficulty in using these methods is to get just the right quantity of water to make the slaking com- plete . Lime so slaked may be barreled and shipped in form of ...
Diğer baskılar - Tümünü görüntüle
Sık kullanılan terimler ve kelime öbekleri
28 days action aluminate of lime American Society apparatus briquettes burning calcium sulphate Candlot carbonate carbonic acid celit cement mortar cent centimeters Chatelier Chemical Civil Engineers clinker commonly concrete consistency contain cracks determined diameter disintegration effect Elements employed expansion Fahr free lime gauging give grains grammes grappiers hardening heat hydrated hydraulic index hydraulic lime immersed inert iron kiln laboratory Le Chatelier less machine magnesia Manual Mechanics Methods of Testing millimeters mixed mixture morocco mould natural cements neat cement needle obtained oxide pats placed Portland cement powder practice Prof proportion quantity of water quick-setting quicklime rate of setting recommended Roman cements sand mortar sea-water sieve silica silica and alumina slag cement slaked lime slaking slow-setting Society of Civil specific gravity specimen standard sand Strength of Materials sulphate sulphuric acid swelling temperature tensile strength Testing Materials tion Treatise tricalcic unsoundness usually varies volume weight
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Sayfa 162 - Care should be observed in centering the briquettes in the testing machine, as cross-strains, produced by improper centering, tend to lower the breaking strength. The load should not be applied too suddenly, as it may produce vibration, the shock from which often breaks the briquette before the ultimate strength is reached.
Sayfa 265 - F. as practicable, and observed at intervals for at least 28 days. (c) A third pat is exposed in any convenient way in an atmosphere of steam, above boiling water, in a loosely closed vessel for five hours. (24) These pats, to satisfactorily pass the requirements, shall remain firm and hard and show no signs of distortion, checking, cracking or disintegrating.
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Sayfa 264 - It shall develop initial set in not less than thirty minutes, but must develop hard set in not less than one hour, nor more than ten hours. TENSILE STRENGTH 22. The minimum requirements for tensile strength for briquettes one inch square in section shall be within the following limits, and shall show no retrogression in strength within the periods specified: ' Age Neat Cement Strength 24 hours in moist air 150 — 200 Ibs.