Authors : Mashair A. Mohamed; Mona A. Jumaa; Suliman A. Mohammed

Volume/Issue : Volume 11 - 2026, Issue 5 - May

Google Scholar : https://tinyurl.com/67a795xw

Scribd : https://tinyurl.com/mr47hbnw

DOI : https://doi.org/10.38124/ijisrt/26May977

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Abstract : An experimental program was designed to investigate the influence of a foaming agent on the fresh and hardened properties of concrete, with the objective of developing a lightweight concrete while assessing its effectiveness in achieving acceptable strength. The study involved the preparation and testing of three concrete mixes with varying dosages of foaming agent, alongside one conventional mix used as a control. For each mix, concrete cubes were cast and cured under standard conditions, and compressive strength tests were conducted at an age of 14 days. The foaming agent was incorporated at dosages of 0.2%, 0.4%, and 0.6% by weight of mixing water. The performance of the modified mixes was evaluated by comparing the test results with those of the control mix, which contained no foaming agent. The experimental results indicated that the addition of the foaming agent had a significant effect on both fresh and hardened concrete. In the fresh state, workability improved progressively with increasing dosage of the foaming agent, due to the air-entraining effect that enhanced flow ability. In the hardened state, however, the compressive strength and unit weight decreased as the proportion of foaming agent increased. This reduction is attributed to the higher volume of entrained air voids, which lower the effective load-bearing area within the concrete matrix.

Keywords : Concrete, Foam Concrete, Workability, Compressive Strength.

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