بررسی رفتار الیاف و تاثیر آن در كنترل ترك هاى بتن بررسی رفتار الیاف و تاثیر آن در كنترل ترك هاى بتن
شنبه 03 تير, 1396

شما اینجاهستید : مطالعات و مقالات
مطالعات و مقالات
تاریخ: 1388/12/19 نظرات: 6 نظر نمایش: 7685 مرتبه تعداد امتیاز: 39   (Article Rating)
بررسی رفتار الیاف و تاثیر آن در كنترل ترك هاى بتن

بتن از سه عنصر اصلى شن و ماسه و سیمان تشكیل شده است كه در آن شن و ماسه توسط سیمان به یكدیگر چسبانده می شوند.این ماده ساختمانی داراى مزایا و معایبی است كه كاربرد ان را در مواردى لازم ومفید و در موارد دیگر غیر ممكن یا مضر می سازد. از جمله معایب بتن:مقاومت كششی بسیار ناچیز آن می باشد كه این رفتار ترد و شكننده موجب شكست ناگهانی و فروریختن سازه های بتنی در هنگام زلزله می گردد.  بتن از سه عنصر اصلى شن و ماسه و سیمان تشكیل شده است كه در آن شن و ماسه توسط سیمان به یكدیگر چسبانده می شوند. این ماده ساختمانی داراى مزایا و معایبی است كه كاربرد ان را در مواردى لازم ومفید و در موارد دیگر غیر ممكن یا مضر می سازد.......

(ادامه ...)

کد: 31
گروه: سازه های بتنی
نویسنده خبر: مدير پرتال
امتیاز بندی

نظرات
wen

# ارسال کننده: wen
   تاریخ ارسال:1395/06/16
In the alpha of this era, Gucci accoutrements is just replica handbags uk fabricated in its hometown, Italy, but now as added and added women are acquisitive to accept a Gucci Jackie O bag or a Gucci Hobo Bag.All the women will adulation it. And louis vuitton replica wallets are aswell actual accepted not alone Gucci men wallets but aswell Gucci women wallets.if the Gucci Bag is discounted or additional hand, it has its tag just the same,stitched in its autogenous with the chanel replica consecutive number, replica Gucci Bag doesn't accept this tag.
uk shop

# ارسال کننده: uk shop
   تاریخ ارسال:1395/07/19
As a watch enthusiast, most of my social media feeds are peppered with wrist-shots, replica watches brand pages, and various industry insiders that I follow, and their posts glide across my screen over and over in an endless array of press images and product releases. Usually, it's your typical wrist-shots that get the most attention - your #speedytuesdays and various dive watches. Needless to say, when something unique comes along, I try to take note. Before I even think about movement, origin, company story, and all of that, I am most often just drawn in by the design breitling replica watches. If a design can stand out from the crowd, then, at least for me, it is worth digging a little deeper. This was the case with Sartory-Billard and the RPM 01 Classic and RPM 01 RS watches. The unique curved design spoke to me, and along the way, I learned a lot about a brand that's recently been busy creating some really interesting pieces in Paris. I will give a little background here first, as this was a company I wasn't familiar with and found myself wanting to know more about them once I really got to spend some time with their watches. Founded in 2015 by its namesakes Ludovic Sartory and Armand Billard, the French brand is based out of Paris and started with a few specific goals in mind. They wanted to have strong French offering, a design that could be instantly recognized, and a product that did not cut corners to give the consumer the best watch possible for the money. This piece draws from the design aspirations of fine motorbikes and cars, but the omega replica watches brand strays from making this on the nose. It can be a hackneyed move to connect watch design with automobiles, but it's not over the top in this instance, and I can appreciate the design notes.The Sartory-Billard RPM 01 watches are sized at 45mm at the crown rolex replica watches, and the hyperbolic bezel is 316L polished stainless steel. The middle and lower casing is bead-blasted for a different appearance and texture than the top.

prada handbags

# ارسال کننده: prada handbags
   تاریخ ارسال:1395/12/26

In both men and women, I think Hermes handbags and the Rolex Watches are used more interchangeably than watches for men and women.It is particularly common to see women wearing men's Luxury Breitling Watches. Me, for example, I wear Original Omega Watches Must 21 of my boyfriend with the black rubber strap.There are many legitimate 1:1 IWC online retailers that sell new certified watches.?At their lower prices, Cartier watches become watches at discounted prices and that's a good thing! Rolex Submariner Watche have splendid styles and designs giving the product a unique style.
prada handbags

# ارسال کننده: prada handbags
   تاریخ ارسال:1395/12/26
This Breitling Watches is not a show that is packed full of features that you would have expected to see on a Rolex Watches Online cheap watch video review.?The Rolex Daytona it is special is its simplicity. It's not often you find replica luxury Replica Handbagsthat do not have features like Hermes Handbags or even a date window.
weekup

# ارسال کننده: weekup
   تاریخ ارسال:1396/01/04
Rolex replica horloges is beter bekend, en maakt de meerderheid van de ontwikkelingen in-huis, dat de top van de lijn autoriteiten willen. Terwijl Breitling heeft een dynamisch vintage markt, het is klein in tegenstelling tot replica horloges rolex.
flyens

# ارسال کننده: flyens
   تاریخ ارسال:1396/01/08
First, let’s talk about my bag which I know that most of Longchamp Outlet you are familiar with: it is a black Longchamp Le Pliage Neo in size small Cheap Longchamp which I got from the TheBagmasterPH. I often use this bag during the weekends and I have to tell you Longchamp Outlet Online that it may be small but it can surely fit a ton of stuff inside.
ارسال نظر:

نام (الزامی)

ایمیل (الزامی)

وب سایت

 آخرين مطالعات و مقالات
جوشكاری مقاومتی در میكرو اتصال ها نويسنده: مدير پرتال

رتبه دريافتی :Article Rating
تعداد بازديد: 4838