Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/13453
Title: Enhancing the performance of pre-cast concrete blocks by incorporating waste glass - ASR consideration
Authors: Lam, CS
Poon, CS 
Chan, D
Keywords: ASR
Concrete paving blocks
Recycled aggregates
Recycled glass
Issue Date: 2007
Publisher: Pergamon Press
Source: Cement and concrete composites, 2007, v. 29, no. 8, p. 616-625 How to cite?
Journal: Cement and concrete composites 
Abstract: There is a growing interest of using recycled crushed glass (RCG) as an aggregate in construction materials especially for non-structural applications. Although the recycled crushed glass is able to reduce the water absorption and drying shrinkage in concrete products due to its near to zero water absorption characteristics, the potential detrimental effect of using glass due to alkali-silica reaction (ASR) in cementitious materials is a real concern. The extent of ASR and its effect on concrete paving blocks produced with partial replacement of natural aggregates by crushed glass cullet are investigated in this study. This study is comprised of two parts. The first part quantified the extent of the ASR expansion and determined the adequate amount of mineral admixtures that was needed to reduce the ASR expansion for concrete paving blocks prepared with different recycled crushed glass contents using an accelerated mortar bar test in accordance with ASTM C 1260 (80 °C, 1 N NaOH solution). In the second part, concrete paving blocks were produced using the optimal mix proportion derived in the first part of this study and the corresponding mechanical properties were determined. It was found from the mortar bar test that the incorporation of 25% or less RCG induced negligible ASR expansion after a testing period of 28 days. For mixes with a glass content of higher than 25%, the incorporation of mineral admixtures such as pulverized fuel ash and metakaolin was able to suppress the ASR expansion within the stipulated limit but the results need to be confirmed by other test methods such as the concrete prism test. The study concluded that the optimal mix formulation for utilizing crushed waste glass in concrete paving blocks should contain at least 10% PFA by weight of the total aggregates used.
URI: http://hdl.handle.net/10397/13453
ISSN: 0958-9465
EISSN: 1873-393X
DOI: 10.1016/j.cemconcomp.2007.03.008
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

53
Last Week
0
Last month
2
Citations as of Sep 10, 2017

WEB OF SCIENCETM
Citations

41
Last Week
0
Last month
1
Citations as of Sep 15, 2017

Page view(s)

49
Last Week
0
Last month
Checked on Sep 17, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.