Performance of Ground Clay Bricks as Partial Cement Replacement in Grade 30 Concrete

Demolitions of buildings have created a lot of waste and one of it is clay bricks. The waste clay bricks were ground to roughly cement fineness and used to partially replaced cement at 10%, 20% and 30% with w/b ratio of 0.6 and tested at 7, 28, 60, 90 and 120 days. The result shows that the compressive strength of GCB concrete increases over age however, decreases as the level of replacements increases. It was also found that 10% replacement of GCB gave the highest compressive strength, however for optimum replacement, 30% was chosen as it still attained strength of grade 30 concrete. In terms of durability performances, results show that GCB replacement up to 30% was found to be efficient in reducing water absorption as well as water permeability. These studies show that GCB has the potential to be used as partial cement replacement in making concrete.

Authors:

• Kartini
• K.
• Rohaidah
• M.N.
• Zuraini
• ZA.

Keywords:

• Compressive Strength
• Ground Clay Bricks
• Partial Cement Replacement
• Water Absorption and Permeability

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