Influence of inorganic admixtures on the 11 angstrom-tobermorite formation prepared from steel slags: XRD and FTIR analysis
Artikel i vetenskaplig tidskrift, 2014

Calcium silicate hydrate is synthesized from steel slag by adding lime and quartz by dynamic hydrothermal method at 185 degrees C. The products mainly consist of disordered calcium silicate hydrate, but more crystallized phase such as 11 angstrom-tobermorite forms for the presence of inorganic admixtures. The formation of tobermorite is affected by the types of ions according to XRD and FTIR results. Adding 2% crystallized tobermorite is beneficial to form the ordered structure; alkali cations and SO42- anions are effective accelerators; Al3+ plays a role of stabilization during the reaction. The products also vary with the initial alkalinities of steel slag.

Tobermorite

Steel slag

Inorganic admixtures

FTIR

XRD

Författare

Shuping Wang

Chalmers, Bygg- och miljöteknik, Byggnadsteknologi

Xiaoqin Peng

Chongqing University

Luping Tang

Chalmers, Bygg- och miljöteknik, Byggnadsteknologi

Zeng Lu

Chongqing University

C. Lan

Chongqing University

Construction and Building Materials

0950-0618 (ISSN)

Vol. 60 42-47

Styrkeområden

Building Futures

Materialvetenskap

Ämneskategorier

Samhällsbyggnadsteknik

DOI

10.1016/j.conbuildmat.2014.03.002