Construction materials management is an important element in the management of construction projects. One of the construction materials widely used in construction projects is concrete. Concrete is one of the important constituents of many of the construction projects, in addition to its subjectivity to variability, requires a close and thorough care and handling in construction projects. The constituents of concrete, in which majority of them occur naturally, are subjected to a wide range of variability and quality problems. Therefore, with this respect, a research was carried out and the objective of this experimental study was to investigate the effect of poorly handled concrete ingredients in the properties of fresh and harden concrete to assess the effect. The ingredients were collected from Five (5) active construction sites around the study area and they wear ready for use when the sample was taken for the research purpose. A laboratory test was conducted for each ingredient before the preparation of concrete. After that mix design was prepared specifically for C-25 concrete then by using weight batching the ingredients are introduced to electrical mixer, after the mix prepared, workability, setting time, and compaction factor test was conducted to identify the properties of the fresh concrete and then a total of 45 concrete cube sample was cast or three (3) sample for each source of the ingredients and for each testing day, the compressive strength test was conducted on the 7th, 14th and 28th day. For the workability test, both slump test and flow table tests were conducted and the result shows that the concrete mix has high workability and the slump is collapse slump and this result is due to the high-water content on both coarse and fine aggregate. the initial setting time of the concrete mix was greater than the ASTM standard specification due to the impurities present in the mixing water also the mix has a high compaction factor test result due to the high workability of the mix or due to self-consolidating property of the concrete mix. The average compressive strength of the concrete after 28th day was not satisfied with the desired strength also the 7th day and the 14th-day compressive strength was less than 60% and 90% respectively of the desired 28th day compressive strength. The result is occurred due to low aggregate crushing value, high silt content of fine aggregate, water impurities and high-water content in the mix. The result shows that the effect of poor handling of concrete ingredients in the properties of fresh and hardened concrete.