Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Niwa J. and Okamoto T. and Maehori S.,Application of Super Lightweight Aggregates to Concrete Structures,Concrete Journal,03871061,Japan Concrete Institute,2000,38,12,3-9,https://cir.nii.ac.jp/crid/1390001205455809408,https://doi.org/10.3151/coj1975.38.12_3