Effect Of Melted Clay Brick Powder (MCBP) On Compressive Strength and Drying Shrinkage Cracks of Cement Mortar. | ||
| Journal of University of Babylon | ||
| Article 1, Volume 20, Issue 1, April 2012, Pages 67-74 | ||
| Author | ||
| Basim Thabit Al-Khafaji | ||
| Abstract | ||
| This investigation is conducted to study the effect of addition of melted Brick clay powder (MCBP) on drying shrinkage cracks and compressive strength of cement mortar. Steel moulds having a trapezoidal section, and the end restrained at square shape used to study restrained drying shrinkage of cement mortar. Specimens of compressive strength , density , were cast. The admixture (MCBP) was used with three levels of ( 2% , 4% , and 8%) by weight of cement. All specimens were cured (7 days). The experimental results illustrate that the adding of this admixture cause a delay in a formation of cracks producted from a drying shrinkage, increase compressive strength at levels of ( 2%) and ( 4 %) of admixture , and decrease the density. The increment of compressive strength at level (2%) was about ( 4.28%) , but at level of ( 8 %) it was decreased about of (2.62%). The admixture has the clear opposite effect in delay of the information of shrinkage cracks and decrease of numbers. | ||
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