CONCRETE IN HOT ENVIRONMENTS - CHAPTER 7 ppt

... creep of mortar and concrete as affected by hot- humid environment. In Proc. RILEM 2nd Int. Symp. on Concrete and Reinforced Concrete in Hot Countries, Haifa, 1 971 , Vol. I. Building Research Station—Technion, ... from Figs. 7. 14 7. 17. In considering the data of Figs 7. 14 7. 17 it may be noted that only when the cement was replaced with granulated blast-furnace slag the...

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... and S.Mindess Concrete in the Marine Environment P.K.Mehta Concrete in Hot Environments I.Soroka Durability of Concrete in Cold Climates M.Pigeon and R.Pleau (forthcoming) High Strength Concrete P.C.Aitcin (forthcoming) ... 1993 E & FN Spon ISBN 0-2 0 3-4 73 6 3-9 Master e-book ISBN ISBN 0-2 0 3 -7 818 7- 2 (Adobe eReader Format) ISBN 0 419 15 970 3 (Pr...

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... heterogeneous material made up of several fine-grained minerals which are formed during the clinkering process. Four minerals, namely Alite, Belite, Celite and a calcium-aluminate phase, make up some 90% ... hydration takes place bringing about setting and subsequent hardening in a few hours. If not allowed to dry, the resulting solid gains strength with time mainly during the first 7 10 d...

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... ‘hardening’. These stages of setting and hardening are schematically described in Fig. 2.1. The initial and final setting times are of practical importance. The initial setting time determines ... length of time in which cement mixes, including concrete, remain plastic and workable, and can be handled and used on the building site. Accordingly, a minimum of 45 min is specified in most...

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... measured in mass concrete. Control mix contained 400 kg/m 3 ordinary Portland cement (OPC). In the fly-ash concrete 30% of the OPC was replaced by fly-ash and in the slag concrete 75 % of the ... grains and, thereby, reduce the spacing between the solids. Hence, on subsequent hydration, the resulting capillary pores in the silica-fume- containing paste are much finer than the p...

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... loss. Proc. J. ACI, 74 (8) (1 977 ), 361 7. 4.9. Hampton, J.S., Extended workability of concrete containing high-range water- reducing admixtures in hot weather. In Development in the Use of Superplasticizers ... pp. 66– 87. 4.24. Tipler, T.J., Handling. In Proc. Intern. Seminar on Concrete in Hot Countries. Helsingor, 1981, Skanska, Malmo, Sweden, pp. 71 –9. 4.25. Anon....

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... Shrinkage and creep of mortar and concrete as affected by hot humid environment. In Proc. RILEM 2nd Int. Symp. on Concrete and Reinforced Concrete in Hot Countries, Haifa, 1 971 , Vol. II, Building ... mainly on the building site, and the latter mainly in the production of glass-fibre-reinforced concrete products, commonly known as GRC products. A detailed discussion of fibr...

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... made of aluminum (all-aluminum), ply- wood face and aluminum frame, plywood face and steel frame, and steel. All-aluminum gang forms consist of aluminum sheathing supported by an aluminum frame ... carry out such work as form stripping and cleaning, setting of reinforce- ment, and other wall maintenance in preparation for the next pour. A 30 in. (76 2 mm) wide working platform also allows...

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... and short exposure of fresh concrete to intensive drying increases strength (Chapter 6, Fig. 6.15) and reduces shrinkage (Chapter 7, Fig. 7. 7). As both strength and shrinkage affect creep, it is ... cement. Cement Concrete Res., 17( 50) (1 972 ), 521–40. 8 .7. Wittmann, F.H., Discussion of some factors influencing creep of concrete. Research Series III—Building, No. 1 67, The State...

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... containing Santorin earth. Cement Concrete Res., 11(4) (1981), 5 07 18. 9.19. Dunstan, E.R., Performance of lignite and sub-bituminous fly ash in concrete A progress report. Report REC-ERC -7 6 –1, ... 9.12 in which the intensity of the reaction is measured by the resulting expansion. Indeed, this effect is utilised in determining the potential alkali reactivity of cement-aggregate...

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