Title :
Experimental study on shell-strengthening the lightweight pumice aggregates
Author :
Xingjun, Lv ; Mingli, Cao
Author_Institution :
Sch. of Civil Eng., Dalian Univ. of Technol. Dalian, Dalian, China
Abstract :
Natural pumice aggregates have the characteristics of low numerical tube pressure and high water absorption, in this study, the pumice aggregates was reinforced by making shell process with the methods of mixing pumice powder and silica fume into cement, which aimed to solve the problem that it was difficult for the preparation of lightweight concrete of high strength . Through the strengthening treatment of pumice aggregates, the light aggregates with the numerical tube pressure of 2.6Mpa bulk density less than 500 kg/m3 and water absorption ranging from 12.1% to 17.5% were obtained. The lightweight aggregate concrete was also made up with pumice. The compressive strength of the concrete at 28d age was higher than 15MPa and the apparent density was about 1400 kg/m3. So the results of this research were conducive for the preparation and application of high-strength and lightweight pumice concrete.
Keywords :
absorption; aggregates (materials); cements (building materials); compressive strength; concrete; density; hardening; lightweight structures; mixing; powders; rocks; shells (structures); bulk density; cement; compressive strength; lightweight aggregate concrete; numerical tube pressure; pumice aggregates; pumice powder; shell process; silica fume; strengthening treatment; water absorption; Absorption; Aggregates; Civil engineering; Concrete; Educational institutions; Electron tubes; Volcanic ash; lightweight aggregate; pumice; shell-making; strengthening numerical tube pressure; water absorption;
Conference_Titel :
Consumer Electronics, Communications and Networks (CECNet), 2011 International Conference on
Conference_Location :
XianNing
Print_ISBN :
978-1-61284-458-9
DOI :
10.1109/CECNET.2011.5769432
