Use of granulated blast-furnace slag in concrete as fine aggregate

YUKSEL İ., OZKAN O., Bilir T.

ACI MATERIALS JOURNAL, cilt.103, sa.3, ss.203-208, 2006 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 103 Sayı: 3
  • Basım Tarihi: 2006
  • Dergi Adı: ACI MATERIALS JOURNAL
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.203-208
  • Anahtar Kelimeler: aggregates, durability, slag cement, HIGH-STRENGTH CONCRETE, HYDRAULIC ACTIVITY, RESISTANCE, CEMENTS
  • İstanbul Üniversitesi-Cerrahpaşa Adresli: Hayır

Özet

This paper reports the results of some experimental studies on the use of non-ground-granulated blast-furnace slag (NGGBFS) as fine aggregate in concrete. Two groups of concrete samples were produced. The NGGBFS/sand ratios were 0% (reference), 25, 50, 75, and 100%. The first group (CI) contains only 0 to 7 mm (0 to 0.276 in.) sand as fine aggregate. The second group (C2) contains two sub-types of fine aggregates that are 0 to 3 nun (0 to 0.118 in.) and 0 to 7 mm (0 to 0.276 in.) sands. NGGBFS replaces 0 to 7 mm (0 to 0.276 in.) sand in both groups. Strength and durability characteristics of concrete were compared with respect to control samples and vice versa. According to the results, if the NGGBFS/ sand ratio is high in the C1.type, the concrete is porous and has relatively. low compressive strength. In the C2 type, however concrete strength and durability characteristics were better than those in the CI type. It was concluded that the non-ground-granulated blast-furnace slag can be used as fine aggregate under some conditions.

This paper describes the results of research aimed at studying the possible usage of bottom ash (BA) and granulated blast-furnace slag (GBFS) in production of plain concrete elements. Sufficient number of briquettes, paving blocks and kerbs specimens containing GBFS and BA as fine aggregate replacement were produced in laboratory. Then, some of tests were conducted for investigating durability and mechanical properties of these specimens. Unit weight, compression strength and freeze-thaw tests were conducted for briquette specimens. Compression strength, freeze-thaw, water absorption and surface abrasion tests were conducted for paving blocks. Surface abrasion and flexural tensile strength tests were conducted for kerb specimens. While compression strength was decreased slightly, durability characteristics such as resistance of freeze-thaw and abrasion were improved. The results showed that usage of partially fine aggregate of these industrial by-products has more beneficial effects on durability characteristics of plain concrete elements.