混凝土版需要搗實(Consolidation)嗎 (ACI Concrete International, Vol.36 No.6)

搗實關係到混凝土的強度與耐久性質.
ACI 318-11 提到必須有適當的搗實來製作具耐久性抗硫酸鹽的混凝土.
ACI 309R-05 針對不同的工程,提供搗實所需設備及步驟的建議,並提及影響搗實的配比因素,搗實的機制等.
ACI 301-10 5.3.2.5提出,除特別指定外,混凝土必須搗實, 亦允許使用振動以外的方式搗實.

搗實的程度必須與混凝土的工作性相關. 稠度較高的混凝土需要較強的振動. 自充填混凝土則不需任何振動.

所有的混凝土需要適當程度的搗實, 方法與設備必須於施工規範中要求.

(Draft) ACI 新委員會 310-0J - Polished Finishes 成立

Ref:
http://www.concrete.org/committees/DirectoryofCommittees/ACommitteeHome.aspx?committee_code=0000310-0J

(Draft) 中型與重型卡車將適用新能源效率法規 (美國)

Ref:
http://www.businessweek.com/news/2014-02-18/obama-sets-timetable-for-new-truck-fuel-efficiency-rules

(Draft) 連續澆置混凝土的世界記錄

Ref:
http://www.foxnews.com/us/2014/02/16/la-construction-crews-aim-for-longest-continuous-concrete-pour/

約2000車次, 連續20 小時澆置21200 立方碼的混凝土

(Draft) 綠建築的新概念: Net positive + water

Ref:
http://www.greenbiz.com/blog/2014/02/12/net-positive-add-water-buildings

(Draft) 549.4R-13 Guide to Design and Construction of Externally Bonded Fabric-Reinforced Cementitious Matrix (FRCM) Systems for Repair and Strengthening Concrete and Masonry Structures

Ref:
http://www.concrete.org/Store/ProductDetail.aspx?ItemID=549413

(Draft) GT 利用爐石研發自癒混凝土

Ref:
http://www.bizjournals.com/atlanta/blog/atlantech/2014/02/gt-researchers-develop-self-healing.html

(Draft) 515.2R-13 Guide to Selecting Protective Treatments for Concrete

Ref:
http://www.concrete.org/Store/ProductDetail.aspx?ItemID=515213

(Draft) 美國環保署(EPA, Environmental Protection Agency)同意煤灰運用於水泥與牆板

Ref:
http://blogs.courier-journal.com/watchdogearth/2014/02/10/epa-says-it-is-ok-to-use-coal-ash-in-concrete-and-wallboard/
http://blogs.courier-journal.com/watchdogearth/2014/01/31/epa-agrees-to-set-coal-ash-rules-this-year/

(Draft) 利用曲面混凝土(curved concrete)建造房屋

Ref:
http://www.designboom.com/architecture/estudio-dosis-creates-casa-v-from-curved-concrete-2-10-2014/

(Draft) World of Concrete 展出7個新科技

Ref:
http://www.architectmagazine.com/concrete/seven-technologies-from-the-world-of-concrete-for-the-world-of-architecture.aspx?dfpzone=home

(Draft) 利用新技術澆置RCC以建造波多黎各的水庫

Ref:
http://enr.construction.com/infrastructure/water_dams/2014/0205-innovative-roller-compacted-concrete-dam-opens-in-puerto-rico.asp

(Draft) 使用於混凝土的新纖維

Ref:
http://www.betterroads.com/fibers-for-concrete/

(Draft) 預鑄建築正在紐約市興起

Ref:
http://www.theepochtimes.com/n3/481474-modular-construction-takes-off-in-new-york/

(Draft) 利用廢棄麵粉袋製作混凝土塊

Ref:
http://gizmodo.com/the-concrete-blocks-at-this-bakery-are-made-from-empty-1512453704

(Draft) 倫敦地鐵工程利用糖來延緩混凝土凝結

Ref:
http://www.telegraph.co.uk/news/uknews/road-and-rail-transport/10594427/Underground-blunder-sugar-used-to-slow-concrete-setting.html

(Draft) LEED v4 概觀

Ref:
http://finance-commerce.com/2014/01/a-look-at-leeds-new-v4-standards/

(Draft) ACI 在第40屆 World of Concrete 公開新標誌

Ref:
http://www.khl.com/magazines/international-construction/detail/item91880/Hanley-Wood-hails-successful-World-of-Concrete

(Draft) 美國賓州運輸部希望與民間合作修繕橋梁

Ref:
http://www.post-gazette.com/news/state/2014/01/21/PennDOT-offering-private-sector-a-partnership-to-fix-bridges/stories/201401210056

(Draft) 美國海軍資助3D列印建築

Ref:
http://www.foxnews.com/tech/2014/01/21/navy-helps-fund-3d-printing-buildings/