Title:
Effect of Using Lightweight Aggregate on Properties of Roller-Compacted Concrete
Author(s):
Ziyad Majeed Abed and Abeer Abdulqader Salih
Publication:
Materials Journal
Volume:
114
Issue:
4
Appears on pages(s):
517-523
Keywords:
bulk density; curing methods; flexural strength; internal curing; porcelanite; roller-compacted concrete; water absorption
DOI:
10.14359/51689775
Date:
7/1/2017
Abstract:
Roller-compacted concrete (RCC) is concrete that has no slump, no forms, no reinforcing steel, no finishing, and is wet enough to support compaction by vibratory rollers. Due to the effectiveness of curing on properties and durability, the essential aim of this research is to study the effect of various curing methods (air curing, 7 days of water curing, emulsified asphalt curing, and permanent water curing) and porcelanite (lightweight aggregate used as an internal curing agent) with different replacement percentages of fine aggregate (volumetric replacement) on RCC and to explore the possibility of introducing practical RCC for road pavement with a minimum requirement of curing. Specimens were sawed from slabs of 14.96 x 14.96 x 3.94 in. (380 x 380 x 100 mm). Results show that using 5% porcelanite improved RCC (with air curing) as compared to reference RCC (with permanent water curing) by percentages ranging from 0.4 to 1.7, 3.6 to 28.9, and 15.9 to –41.3% for bulk density, flexural strength, and water absorption, respectively
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