Experimental study on sea-sand ultra-high performance concrete; [海砂超高性能混凝土试验] - Details

author：

Wei, J. (Wei, J..) ^[1] | Chen, R. (Chen, R..) ^[2] | Huang, W. (Huang, W..) ^[3] (Scholars：黄伟) | Bian, X. (Bian, X..) ^[4] | Ma, X. (Ma, X..) ^[5]

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Abstract：

In　this　paper,　ultra-high　performance　concrete(UHPC)　and　ordinary　concrete　are　prepared　using　undesalted　sea-sand.　The　impact　of　sea-sand　with　varying　chloride　ion　levels　on　the　compressive　strength,　pore　structure　and　durability　of　steel　embedded　in　UHPC　is　investigated　and　compared　with　that　of　conventional　concrete.　The　results　show　that　the　chloride　ion　content　in　sea-sand　does　not　significantly　negatively　affect　the　compressive　strength　of　UHPC.　The　critical　pore　radius　of　UHPC　made　with　sea-sand　is　approximately　2　nm.　Different　from　sea　sand　concrete,　the　porosity　of　sea-sand　UHPC　increases　with　the　increase　of　chlorine　content　in　sea-sand.　Even　when　the　chloride　ion　content　in　the　sea　sand　is　as　high　as　0.636%,　the　chloride　ion　permeability　of　the　sea-sand　UHPC　remains　negligible.　The　reinforcement　in　sea-sand　UHPC　is　in　a　passive　state　and　tends　to　stabilize　after　28　days.　©　2024　Chongqing　University.　All　rights　reserved.

Keyword：

compressive strength durability pore structure sea-sand ultra-high performance concrete

Community：

[ 1 ] [Wei J.]College of Civil Engineering, Fuzhou University, Fuzhou, 350116, China
[ 2 ] [Wei J.]College of Civil Engineering, Fujian University of Technology, Fuzhou, 350118, China
[ 3 ] [Chen R.]College of Civil Engineering, Fuzhou University, Fuzhou, 350116, China
[ 4 ] [Huang W.]College of Civil Engineering, Fuzhou University, Fuzhou, 350116, China
[ 5 ] [Huang W.]Lets Holding Group Co., Ltd., Fujian, Xiamen, 361004, China
[ 6 ] [Bian X.]College of Civil Engineering, Fuzhou University, Fuzhou, 350116, China
[ 7 ] [Ma X.]Lets Holding Group Co., Ltd., Fujian, Xiamen, 361004, China

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Related Keywords：

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Source ：

Journal of Chongqing University

ISSN： 1000-582X

CN： 50-1044/N

Year： 2024

Issue： 2

Volume： 47

Page： 14-21

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 4

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