Using a new composite expansive material to decrease deformation and fracture of concrete

Using minerals of dolomite, serpentine and magnesite produce a new composite material which provides an expansive stress to decrease deformation and fracture of hydraulic concrete. The compositions of the expansive material are mainly MgO, CaO and C 2S by X-ray techniques. Adding the expansive mater...

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Bibliographic Details
Published in:Materials letters 2008-01, Vol.62 (1), p.106-108
Main Authors: Peiwei, Gao, Xiaolin, Lu, Shaochun, Jin, Hui, Zhang, Chunxing, Guo
Format: Article
Language:English
Subjects:
Composite material
Deformation and fracture
Hydraulic concrete
Minerals
X-ray techniques
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Summary:Using minerals of dolomite, serpentine and magnesite produce a new composite material which provides an expansive stress to decrease deformation and fracture of hydraulic concrete. The compositions of the expansive material are mainly MgO, CaO and C 2S by X-ray techniques. Adding the expansive material to concrete, the shrinkage of concrete may be compensated by the hydration of CaO to Ca(OH) 2 in early ages and the hydration of MgO to Mg(OH) 2 in later ages respectively, so decrease deformation and fracture of concrete.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2007.04.091