Durability properties of lightweight self-consolidating concrete developed with three types of aggregates

作者：Lotfy Abdurrahmaan; Hossain Khandaker M A^*; Lachemi Mohamed

来源：Construction and Building Materials, 2016, 106: 43-54.

DOI：10.1016/j.conbuildmat.2015.12.118

• Lightweight self-consolidating concrete
• Acid resistance
• Salt scaling
• Fire resistance
• Freeze-thaw
• Durability

The durability properties of lightweight self-consolidating concrete (LWSCC) using three types of lightweight aggregates: furnace slag (FS), expanded clay (EC), and expanded shale (ES) is presented. LWSCCs exhibited superior fire resistance in terms of residual strength showing formation of no major cracking (only visible hairline cracks)/spalling after exposure to elevated temperatures of up to 900 degrees C for a duration of 1.5 h. Salt-scaling resistance was also found to be adequate and primarily dependent on the aggregate quality and associated properties. LWSCC mixtures showed enhanced resistance against sulfuric acid attack due to proper formation of the cementitious paste matrix. However, non-air entrained LWSCC mixtures were unable to withstand severe freezing and thawing cycles.

• 出版日期2016-3-1