Performance Enhancement of Concrete Incorporating Demolition Waste Aggregates using PC-200 Superplasticizer
الباحث الأول:
Jenan N. Almusawi
الباحثين الآخرين:
Niran M. Sharba, Khulood Amory Shaalan, Qusay A. Jabal, laith Abdulrasool Alasadi, Maher F. Allabban
المجلة:
International Research Journal of Multidisciplinary Technovation
تاريخ النشر:
8 مايو، 2026
مختصر البحث:
The rising amounts of construction and demolition waste lead to several environmental problems, thus
necessitating the need to recycle such materials in concrete production. In this paper, the use of demolition concrete
waste aggregate in concre…
The rising amounts of construction and demolition waste lead to several environmental problems, thus
necessitating the need to recycle such materials in concrete production. In this paper, the use of demolition concrete
waste aggregate in concrete mixes in replacement ratios of 0-100% is considered. Furthermore, the effects of PC-
200 superplasticizer in combination with decreased water-cement ratio on mechanical and fresh properties of the
investigated concrete are evaluated. Two groups of mixes were analyzed such as ordinary concrete mixes containing
a water-cement ratio of 0.42 and modified concrete mixes with 1.2% PC-200 superplasticizer and a decreased water-
cement ratio of 0.28. The experimental results show that the use of demolition waste aggregate reduces the
mechanical properties and workability of ordinary concrete mixes, while modified mixes have better results under the
given experimental conditions. It was found that the mechanical properties, such as compressive strength, tensile
strength, and flexural strength, and the modulus of elasticity increase with the rise in replacement ratios in modified
mixes. Nevertheless, it must be noted that these results are obtained by the effect of a combination of a decreased
water-cement ratio and superplasticizer and are only valid in the context of the current experiment. However, the lack
of information regarding durability testing, microstructure investigation, and long-term performance makes it difficult
to implement the findings into practice, and further investigations are needed for practical implementation.
