Using Baking Powder as Additional Concrete Material

Abstract

Baking Powder is a useful ingredient for developing which basically used in increasing food volume. It is made from alkaline sodium bicarbonate elements, acid salts and corn starch. Baking powder is a chemical compound consisting of NaHCO3 formula. This compound belongs to the salt group and has been used for a long time. The main added ingredients of retarders are divided into several categories according to their chemical composition, including: 1) Lignosulphonic Acid and other salts, ie., Na, Ca or NH4, 2) Hydro-carboxylic acids and their salts. In this study we used baking powder as an added ingredient. This study aims at determining the setting time, compressive strength and the freshness of concrete with variations in the addition baking powder are 0.00%; 0.15%; 0.30%; 0.45% of the weight of cement. This is an experimental research. Test samples for compressive strength in the form of a concrete cylinder. The results showed that maximum value of compressive strength of concrete is in the addition of 0.45% baking powder with an increase in compressive strength of 6.43% of the nominal concrete.