你的位置:水利论文 >> 论文 >> 江苏省 >> 南京水利科学研究院 >> 详细内容 在线投稿

考虑含气量经时变化的高寒地区碾压混凝土性能研究【作者】刘伟宝 【导师】陆采荣

热度197票 浏览162次 【共25条评论】【我要评论 时间:2008年7月01日 17:30

9j^;O+pl~1V_C0考虑含气量经时变化的高寒地区碾压混凝土性能研究水利论文5SCSY#o0X4Ne@,n

水利论文g/G5zR9lW

【作者】刘伟宝导师陆采荣水利论文.j2f*i fb
【作者基本信息】南京水利科学研究院,材料学,2008年,硕士

.V'E:pNsG;o;npE0

l#~$_%? _kf g0水利论文"{N pH%x|/R?
【中文摘要】 本文总结了碾压混凝土的发展过程和碾压混凝土筑坝技术的优势以及在北方寒冷地区的应用情况。阐述了含气量对于高寒地区碾压混凝土抗冻耐久性的重要性,说明了碾压混凝土含气量存在经时变化的事实。分析了水泥、粉煤灰、细骨料、粗骨料、外加剂和水对碾压混凝土含气量的影响,通过试验观察了碾压混凝土经时变化的规律。从失水、点面接触、表面张力下降和气泡迁移融合等角度分析了碾压混凝土含气量经时变化的机理。通过六组碾压混凝土含气量变化前后的性能对比试验,研究了含气量经时变化对碾压混凝土性能的影响。六组碾压混凝土包括三组二级配F300高抗冻碾压混凝土和三组三级配F50抗冻碾压混凝土,二种级配的碾压混凝土各考虑三种不同的骨料方案。对比了拌和后立即成型和静置30min后成型两种情况的混凝土拌和物性能、物理力学性能以及抗冻耐久性能,试验结果表明,静置30min后的碾压混凝土含气量有损失,物理力学性能略有提高,抗冻性能变化不大,但相对动弹性模量下降较快。采用直线导线法、数字图像分析法和RapidAir测试仪等三种方法测试计算气泡参数并进行对比,结果表明,静置30min后的碾压混凝土含气量损失、平均气泡半径减小而气泡间距系数...更多增大。三种方法测出的气泡参数有偏差,从各种方法的原理分析认为RapidAir测试仪测得的结果可信度高。考虑将细骨料中的部分石粉或者全部石粉视为浆体成分,得出的碾压混凝土气泡间距系数变大。研究结果可为高寒干燥气候地区的碾压混凝土设计和施工提供参考。  还原水利论文.N/iJ$SE

F)wv s7e5y'YHs2J.^0【英文摘要】 The history of Roller Compacted Concrete (RCC), the advantages of the technology of dam constructing using RCC and the application of RCC in northern cold areas were summarized. The importance of air-content to concrete anti-frozen durability was described, and the fact of the time-dependent air-content changing was pointed out. The influence of by cement, fly-ash, fine aggregate, coarse aggregate, admixture and water on the air-content was analyzed. The changing of air-content was observed through experiments. From different aspects such as the dehydration, the spot surface contact, the surface tension drop and the air bubble migration fusion, the mechanism of time-dependent air-content changing was analyzed. The influence of time-dependent air-content changing on RCC performance was studied by way of the comparative tests on air-content changed with the initial of 6 groups of RCC. The 6 groups of RCC included 3 groups of the second grade RCC of F300 and 3 groups of the third grade RC...更多C of F50, each with 3 different types of aggregate. The property of fresh concrete, the physical and mechanical properties and frost-resisting durability of the initial one and that after 30 minutes were compared. The results showed that the air-content had certain loss, the physical and mechanical properties were improved, the frost-resisting durability had less change and the relative dynamic modulus of elasticity decreased fast after 30 minutes. The air void parameter was tested by three methods. The results showed that the air-content had certain loss, the average bubble radius decreased, and the air void spacing factor increased after 30 minutes. There were errors between the three methods but the changing trend was the same. The air void spacing factor would increase if the stone powder was partially or totally regarded as the cementitious material. It would be reference for the RCC design and construction in extreme cold and dry climate areas.  还原

/GO N5zQ*i0水利论文)G8K0~m-`d{

【中文关键词】 碾压混凝土; 高寒; 干燥; 含气量; 性能; 石粉; 气泡间距系数水利论文3\7Ja+l"R{w@g
【英文关键词】 roller compacted concrete (RCC); extreme cold area; arid climate; air-content; performance; stone powder; air void spacing factor

d ^.m,uQ@#];\0水利论文?f|L} HZJ"W-N

 

4iip}Pw4D:A0
TAG: 导师 陆采荣 性能 气量 刘伟宝
顶:21 踩:30
【已经有146人表态】
26票
极差
15票
很差
12票
较差
22票
稍差
20票
稍好
23票
较好
14票
很好
14票
极好
下一篇:湿地生态系统水文连接度研究 【作者】赵贤豹 【导师】陈敏建; 丰华丽
上一篇:潜堤上波浪破碎与传播特性的模型试验研究【作者】王恺 【导师】左其华
水利论文安徽省电信网友 [nypd1doi] ip: 117.68.*.*
2015-10-30 21:59:34
Decrease th <a href="http://www.cheapnfljerseyschinashop.us.com/">Cheap NFL Jerseys</a> eir presence as much as possible to avoid them wreaking havoc in your garden.  <a href="http://www.cheapnfljerseyschinashop.us.com/">Wholesale Cheap Jerseys</a> Italian bags are exceptionally admired for their high end superiority and the genuineness of the leather i <a href="http://www.cheapnfljerseyschinashop.us.com/">Cheap Jerseys</a> s simply peerless. At the time once more the glimpse for content material in opposition to the community
水利论文Unknown网友 [nypd1doi] ip: 183.160.*.*
2015-11-21 03:10:32
Scarcity of water and fresh green ve <a href="http://www.authenticeaglesonline.com/authentic-jason-kelce-eagles-jersey/">Jason Kelce Jersey</a> getables has all had their effect on the cooking.We usually disco <a href="http://www.authenticeaglesonline.com/authentic-tim-tebow-eagles-jersey/">Authentic Tim Tebow Jersey</a> ver instructions on programming remote controls for receivers of HD type in the manual, which you might desire to implent. These on-line programs are  <a href="http://www.authenticeaglesonline.com/authentic-nelson-agholor-eagles-jersey/">Nelson Agholor Womens Jersey</a> more than 300 which the college supplies typicall
水利论文Unknown网友 [dj2gyqgr4c] ip: 183.160.*.*
2016-01-28 14:02:43
PPC  campaign managent is really a cost effective t <a href="http://www.chelseafanaticshop.com/Authentic-Nemanja-Matic-Chelsea-Jersey/">Nemanja Matic Jersey</a> ype of advertisent and such ads will assist you to plint yo <a href="http://www.chelseafanaticshop.com/Authentic-Kenedy-Chelsea-Jersey/">Kenedy Chelsea Jersey</a> ur effort. You'll see men in football jerseys, men in football hats, lines a mile long at the food and drink stands,Nemanja Matic Jersey, children enjoying their very first live football ga <a href="http://www.chelseafanaticshop.com/Authentic-John-Obi-Mikel-Chelsea-Jersey/">John Obi Mikel Chelsea Jersey</a> m
水利论文Unknown网友 [mlia0t9c] ip: 183.160.*.*
2016-02-25 01:17:58
Learning about the options for simple pay day l <a href="http://www.officialbluejaysjerseysshop.com/Grey-Justin-Smoak-Womens-Jersey/">Justin Smoak Blue Jays Jersey</a> oans can be actual accessible in a bulk of ways. Promoting or manufacturing <a href="http://www.officialbluejaysjerseysshop.com/Grey-Russell-Martin-Womens-Jersey/">Russell Martin Blue Jays Jersey</a>  counterfeit jerseys is a very serious crime. Penalties for a first offense are a fine of as much as $2 million and 10 years in prison. The grooves and the many things that make <a href="http://www.officialbluejaysjerseysshop.com/Grey-Drew-Hutchison-Womens-Jersey/">Drew Hutchison Blue Jays Jersey</a>
水利论文IANA网友 [nypd1doi] ip: 223.240.*.*
2016-02-29 08:07:47
Buy affordable  mulberry handbags from authorized mu <a href="http://www.footballbearsofficial.com/women-pernell-mcphee-jersey/">Pernell McPhee Authentic Jersey</a> lberry outlet Shop right away with Rapid Shipping,Pernell McPhee Authentic <a href="http://www.footballbearsofficial.com/women-mason-foster-jersey/">Mason Foster Jersey</a>  Jersey, Risk-free Payment & Remarkable Customer Care from us.A great drill to practice playing soccer with is called Get Control. Then there are long college bags which can <a href="http://www.footballbearsofficial.com/women-marquess-wilson-jersey/">Bears Marquess Wilson Jersey</a>
水利论文Unknown网友 [nypd1doi] ip: 183.160.*.*
2016-04-13 04:00:47
sports car,Brooks R <a href="http://www.falconsstoreonline.com/Black-56-Brooks-Reed-Womens-Jersey/">Brooks Reed Jersey</a> eed Jersey, Ford's Thunderbird,Dezmen Southward Jersey, and it <a href="http://www.falconsstoreonline.com/Black-41-Dezmen-Southward-Womens-Jersey/">Dezmen Southward Jersey</a> s popularity soared dramatically. Just never bet your home on them. You may also include some cheap soccer shoes that match with the ars <a href="http://www.falconsstoreonline.com/Black-99-Adrian-Clayborn-Womens-Jersey/">Adrian Clayborn Shirts</a> enal jersey that you have bought for the team.Edu.In case you intend to buy soccer
水利论文安徽省电信网友 [kse5ig0d] ip: 117.67.*.*
2016-06-26 10:18:03
If  <a href="http://www.chargersfootballonline.com/AUTHENTIC-DAVID-JOHNSON-CHARGERS-JERSEY/">David Johnson Chargers Jersey</a> y <a href="http://www.chargersfootballonline.com/AUTHENTIC-JOEY-BOSA-CHARGERS-JERSEY/">Navy Blue Joey Bosa Jersey</a> ou have excessively free ti and you have the opportunity to work hard diets and exercise, than this is not for youlose weight fast, have a lean body and if you are LAZY than this is certainly f <a href="http://www.chargersfootballonline.com/AUTHENTIC-KEENAN-ALLEN-CHARGERS-JERSEY/">Keenan Allen Womens Jersey</a> or you, lazy Thin Formula isn't for everyone!Foxtrot is one of the most exquisite and most difficult fr
水利论文安徽省电信网友 [nypd1doi] ip: 117.67.*.*
2016-06-26 20:15:10
Being arranged in order, the engine leading, they m <a href="http://www.thecardinalsfootballonline.com/AUTHENTIC-MARKUS-GOLDEN-CARDINALS-JERSEY/">Markus Golden Jersey</a> arch or run around, each imi <a href="http://www.thecardinalsfootballonline.com/AUTHENTIC-KURT-WARNER-CARDINALS-JERSEY/">Authentic Kurt Warner Jersey</a> tating the Markus Golden Jersey part he represents, stopping at Authentic Kurt Warner Jersey stations, etc.victimasdemedicos.  Meaning, water will no longer exist in the shape of a drop, but rather they will spread out e <a href="http://www.thecardinalsfootballonline.com/AUTHENTIC-SAM-ACHO-CARDINALS-JERSEY/">Authentic Sam Acho Jersey</a> v
水利论文IANA网友 [nypd1doi] ip: 223.240.*.*
2016-08-05 20:03:24
Basketbal <a href="http://www.sportingkansascityshop.com/Authentic-Amadou-Dia-Sporting-Kansas-City-Jersey/">Amadou Dia Jersey</a> l shoes often have a strong grip on the bottom that prevents an athlete f <a href="http://www.sportingkansascityshop.com/Authentic-Jimmy-Medranda-Sporting-Kansas-City-Jersey/">Jimmy Medranda Jersey</a> rom sliding. It's a key a principal underlying martial arts like Aikido and it's the essence of what football great and recent winner of "Dancing with the Stars",Amadou Dia Jersey, Emmitt Smith calls  <a href="http://www.sportingkansascityshop.com/">Kansas City Jersey</a> being in the "zone
水利论文安徽省电信网友 [nopd7roi] ip: 117.67.*.*
2016-08-23 14:50:55
The import <a href="http://www.airhuarachetripleblack.com/nike-air-huarache-for-sale/nike-air-huarache-nm.html"> nike air huarache nm for sale</a> ant point here is to remain focussed and KNOW that you will ge <a href="http://www.airhuarachetripleblack.com/cheap-nike-shox-outlet-clearance/nike-shox-tlx.html"> nike shox tlx mid sp for sale</a> t there. And as the name implies, it's cold.SEO is simply Internet marketing. This unconformity indicates an opening of over 100 million years that is missing from  <a href="http://www.airhuarachetripleblack.com/cheap-nike-shox-outlet-clearance/nike-shox-current.html"> nike shox current for sale</a> these rocks. I was behind a tree, and the left side, there was a
水利论文安徽省电信网友 [dlsr90xc] ip: 117.67.*.*
2016-09-24 09:06:39
Currently Those people can be perceived <a href="http://www.shoptheofficialbengals.com/Elite-Marquis-Flowers-Bengals-Jersey/">Marquis Flowers Jersey</a>  limitations that they may perhaps feel are reputation within  <a href="http://www.shoptheofficialbengals.com/Elite-Domata-Peko-Bengals-Jersey/">Domata Peko Bengals Bengals Jersey</a> their path, they can be administrative or organizational limitations that are name inside their direction.Color contacts offer a way to achieve a more dramatic lo <a href="http://www.shoptheofficialbengals.com/Elite-Anthony-Munoz-Bengals-Jersey/">Anthony Munoz Bengals Bengals Jersey</a> ok with relative ease. Their control
水利论文安徽省电信网友 [nypd1doi] ip: 117.67.*.*
2016-10-12 11:13:06
Ask from your first place if their list of supplie <a href="http://www.nbawarriorsshop.com/wilt-chamberlain-jersey/">Wilt Chamberlain Warriors Jersey</a> rs is open!3. Their  <a href="http://www.nbawarriorsshop.com/david-lee-jersey/">David Lee Warriors Jersey</a> toned butts and thighs show that the Slideboard helps tone but not bulk up their muscles.and this is where the ball will go.If anyone will get famous off of a bu <a href="http://www.nbawarriorsshop.com/andrew-bogut-jersey/">Andrew Bogut Warriors Jersey</a> ilding, it is likely to be the architect, and not the man who keeps t
水利论文IANA网友 [kse5ig0d] ip: 223.240.*.*
2016-11-15 11:19:37
Bauer,Fabio Cannavaro J <a href="http://www.italyssocceronline.com/world-cup-fabio-cannavaro-football-jersey/">Fabio Cannavaro Jersey</a> ersey <a href="http://www.italyssocceronline.com/world-cup-gabriel-paletta-football-jersey/">Gabriel Paletta Italy Jersey</a> , who has dominated minor league hitters at two levels this season, was pulled after making 50 pitches in 2 23 innings in his start for Class AAA Reno on Sunday. Today, however, the sport is officially recognized as tab <a href="http://www.italyssocceronline.com/world-cup-lorenzo-de-silvestri-football-jersey/">Lorenzo De Silvestri Italy Jersey</a> le tennis; only those who play at the hobby-level use
水利论文IANA网友 [nopd7roi] ip: 223.240.*.*
2016-11-15 16:51:10
You can increase the challenge of t <a href="http://www.2016airmaxkopen.nl/nike-air-max-90-goedkoop/air-max-90-heren.html"> nike air max 90 heren zwart wit</a> his exercise by adding weights.2.  nike air max 90 heren zwa <a href="http://www.2016airmaxkopen.nl/"> nike air max 2016 kopen</a> rt wit .comArticle Source: Use These Ideas To Become A Great LeaderUse These Ideas To Become A Great LeaderJuly 8, 2013 | Author: Johnathan Black | Posted in ManagementEven if you have  <a href="http://www.2016airmaxkopen.nl/nike-air-max-90-goedkoop.html"> nike air max 90 goedkoop bestellen</a> no interest in advan
水利论文安徽省电信网友 [nypd1doi] ip: 117.68.*.*
2016-12-22 04:45:26
Buehrl <a href="http://www.sneakers2017nz.com/">nike air max 2017 nz</a> e, who is 214-160 with a career 3.Market For James Shields Remains Unkno <a href="http://www.sneakers2017nz.com/nike-air-max-90-cheap-nz.html">nike air max 90 nz</a> wn - RealGM WiretapThe Red Sox reportedly have not had much recent discussion with pitcher James Shields, according to ESPN <a href="http://www.sneakers2017nz.com/nike-air-max-2017-black.html">nike air max 2017 black mens</a>  and Sirius XM's Jim Bowden, leaving the market largely unknown.The Pirates and McCutchen had discu
水利论文安徽省电信网友 [dlsf08ec] ip: 117.68.*.*
2016-12-23 02:18:39
"Beauty Suggestions Which <a href="http://www.thebillsshoponline.com/Youth-Corey-White-Bills-Jersey/"> Corey White Youth Jersey</a>  You Can Basically UseYou might have walked past the elegance countertop <a href="http://www.thebillsshoponline.com/Youth-Aaron-Williams-Bills-Jersey/"> Aaron Williams Jersey</a>  in shops a thousand times on numerous excursions to the shopping center. The primary emphasize of this particular car is actually the driving encounter and excitement since alth <a href="http://www.thebillsshoponline.com/Youth-Kevin-Kolb-Bills-Jersey/"> Kevin Kolb Youth Jersey</a> ough it can go up to a sp
水利论文安徽省电信网友 [kidc5b0a] ip: 117.68.*.*
2016-12-23 06:02:19
So, you can alread <a href="http://www.cheapjerseystowholesale.com/">Cheap Jerseys From China</a> y put your mind at ease since you can count on these people to Ch <a href="http://www.cheapjerseystowholesale.com/">Cheap Jerseys</a> eap Jerseys From China do their job right. Two things people love are free gifts and appreciation. Also, ta <a href="http://www.cheapjerseystowholesale.com/">Cheap NFL Jerseys</a> ke adequate time to discuss all important issues with the caregiver before you leave your kids in their hands.
水利论文安徽省电信网友 [kidc5b0a] ip: 117.68.*.*
2017-04-11 10:34:04
For example, the  <a href="http://www.wholesalenflchinajerseys.us.com/">Cheap Jerseys</a> first <a href="http://www.wholesalenflchinajerseys.us.com/">Cheap NFL Jerseys</a>  impression we have of a man obviously plays a pivotal role. From that day his life changed.)Bookmakers, also known as Oddsmakers <a href="http://www.wholesalenflchinajerseys.us.com/">Wholesale NFL Jerseys</a> , create a set of odds that you use to bet on the probability of a competitor winning the contest. While 2030 will be the peak year of boomer retirem
水利论文安徽省电信网友 [dj2gyqgr4c] ip: 117.68.*.*
2017-05-13 08:31:21
Orioles Place Chris Davis On Paternity Leave - RealGM Wir <a href="http://www.goedkoopairmax2016.nl/adidas-superstar-ii/adidas-superstar-ii-zwart.html">adidas superstar 2 zwart wit</a> et <a href="http://www.goedkoopairmax2016.nl/nike-air-max-90.html">nike air max 90 goedkoop bestellen</a> apThe Orioles have placed Chris Davis on paternity leave and added Nick Hundley, who was obtained in a trade with San Diego on Saturday. Unfortunately,adidas superstar 2 zwart wit, the process <a href="http://www.goedkoopairmax2016.nl/adidas-superstar-ii/adidas-superstar-ii-wit.html">adidas superstar ii wit</a>  is the most important part of achieving any goal
水利论文安徽省电信网友 [kse5ig0d] ip: 117.68.*.*
2017-05-13 13:04:44
There are wooden varieties which are higher fitted to continually changing clim <a href="http://www.passno.com/ua-speedform-phenom.html">under armour speedform phenom sale</a> ate circumstances, and t <a href="http://www.passno.com/ua-scorpio.html">under armour scorpio</a> here are those who require steady local weather circumstances and minimal publicity to the elements. It really is great to travel where there is often a fun and also great food that is why Texas r <a href="http://www.passno.com/ua-speedform-apollo-vent.html">under armour speedform apollo vent sale</a> o
查看全部回复【已有25位网友发表了看法】

广告投放

广告投放