دانلود مقاله ISI انگلیسی شماره 53321
عنوان فارسی مقاله

تاثیر پخت بخار اتمسفر توسط انرژی خورشیدی بر روی مقاومت فشاری و خمشی بتن

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
53321 2013 8 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Influence of atmospheric steam curing by solar energy on the compressive and flexural strength of concretes
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Construction and Building Materials, Volume 49, December 2013, Pages 511–518

کلمات کلیدی
بتن؛ فشاری و مقاومت خمشی؛ پخت بخار؛ انرژی خورشیدی؛ عناصر پیش ساخته
پیش نمایش مقاله
پیش نمایش مقاله تاثیر پخت بخار اتمسفر توسط انرژی خورشیدی بر روی مقاومت فشاری و خمشی بتن

چکیده انگلیسی

In this paper, influence of atmospheric steam curing by solar energy on the compressive and flexural strength of concretes for precast elements was investigated. An experimental program was carried out to studying in parallel the effect of water/cement ratio (0.4, 0.5 and 0.6), the influence of cement type and the influence of curing methods (four methods of curing were used: water curing, air curing, steam curing at 29 °C and steam curing at 45 °C) on the compressive and flexural strength of concretes. Six formulations of similar workability made from ordinary Portland cement (CEM I 42.5) and a composite cement (CEM II/B 42.5) three of each type are studied. The results allow us to highlight the beneficial effect of a steam curing procedure to achieve high compressive and flexural strength, especially in the earlier ages of curing. However, after 28 days of steam curing, a strength reduction was observed in all samples. The technique of steam curing by solar energy is an effective technique for accelerated hardening of concretes, for a good strength and high electrical energy saving for precast concretes production. We can say that the increased compressive strength during the progress of the reaction of hydration is accompanied by an increase in flexural strength. Through the results obtained a gain of time and shorter manufacturing lead times to reach the compressive strength at 28 days in the free air after a one day steam curing and 3 days of hardening in the free air for the two types cement and the different w/c ratios.

خرید مقاله
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