Effect of a MgO-CaO Composed Expansive Agent on the Properties of high performance concrete

Title: Effect of a MgO-CaO Composed Expansive Agent on the Properties of high performance concrete
Author(s): J.P. Liu, Q. Tian, Y.J. Wang, S.Z. Zhang, F. Guo, C.W. Miao
Paper category : conference
Book title: International RILEM Conference on Advances in Construction Materials Through Science and Engineering
Editor(s): Christopher Leung and K.T. WAN
ISBN: 978-2-35158-116-2
e-ISBN: 978-2-35158-117-9
Publisher: RILEM Publications SARL
Publication year: 2011
Pages: 132 - 139
Total Pages: 8
Nb references: 10
Language: English

Abstract: Effects of the new type of MgO-CaO composite expansive agent (MC) on the permeability and durability of concrete were investigated. Experimental results showed that, the incorporation of MC at a dosage of 8% of cementitious materials could decrease the chloride permeability and carbonation depth of concrete, compared to that without MC. The hydration degree of fly ash could be promoted due to CaO component of MC. It was also found that the addition of MC optimized pore structure of harden cement paste(HCP), and hydration product of MgO component didn’t enrich in paste–aggregate interface, moreover, MC could also decrease the orientation of CH crystals of interface.

Online publication: 2011-10-31
Publication type : full_text
Public price (Euros): 0.00