STUDY OF COMPRESSIVE STRENGTH FOR SELF-PROTECTED UNDERWATER MORTAR IN FRESH AND SEA WATER
Self-Protected Underwater Concrete (SPUC) was developed from the technology of Rock-Filled Concrete (RFC).SPUC has the benefits of reducing cement loss,more friendly to marine environment with better flowability.The study of compressive strength of the mortar for SPUC is presented.The mortar was poured into fresh and sea water mixed with Underwater Protective Agent (UPA),which works as anti-washout admixture (AWA).Actually,UPA is different from the previous AWAs,as it is water soluble organic polymers that is incorporated to the water environment not to the mix and improves concrete washout resistance through changing features of water instead of increasing concrete cohesion when placing the concrete under water.22 tests were conducted to evaluate the strength of the samples of the SPUC mortar at 7 and 28 days.Results illustrated that,samples which were poured in fresh water achieved more strength values than sea water samples.Both samples of fresh and sea water recorded less strength values comparing with the reference samples on the air due the severe pouring process in the test.The mortar broke into segments during pouring process,resulting water infiltration and strength loss.It was also noted that the reference samples cured in fresh water have higher strength than those in sea water.
Ahmed A.Nasr Songgui Chen Jingjun Li FENG Jin
State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing, China Tianjin research institute for water and transport engineering, Xingang 2nd Road, Binhai, Tianjin, C College of Water Resources & Civil Engineering, China Agricultural University, Beijing, 100083, Chin
国际会议
the 8th International Symposium on Roller Compacted Concrete (RCC) Dams(第八届国际碾压混凝土大坝国际研讨会)
昆明
英文
67-72
2019-11-11（万方平台首次上网日期，不代表论文的发表时间）