Durability of mortars made with sand washing waste

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作者：Taheni Kallel^a ; ^b ; Abderrazek Kallel^c ; ^d ; Basma Samet^a ; ^{sametbasma@yahoo.fr" class="auth_mail" title="E-mail the corresponding author}
关键词：Durability ; Sand washing waste ; Blended cement mortar ; Sulfate attack ; Acid attack
刊名：Construction and Building Materials
出版年：2016
出版时间：30 September 2016
年：2016
卷：122
期：Complete
页码：728-735
全文大小：2162 K

文摘

•: An industrial waste emanating from sand washing, rich in kaolinite, is used as a pozzolanic material.
•: Durability of mortars containing 0%, 10% and 30% of calcined waste is carried out in water, in HCl and Na₂SO₄ solutions.
•: Durability of mortars is evaluated by weight loss, expansion test, compressive strength and XRD analyses.
•: In the HCl solution, the decalcification of CSH and the dissolution of portlandite are observed.
•: Sulfates react with portlandite to produce gypsum and expansive ettringite.