Page - 932 - in Book of Full Papers - Symposium Hydro Engineering

This waste called coal in input materials, and called coke in exhaust materials. Applying the aggregates smaller than 75 microns (sieve NO. #200), if not plastic, can be a useful solution for reducing the free space among fine-aggregates. Typically, the use of about 2 to 8 percent of aggregates smaller than 75 microns in pavement roller concrete is common (ACI 325.9 R) [4]. This study includes three consecutive parts. In the first part, materials and instruments were prepared and initial tests were performed to establish material properties. In the second part, material properties were checked with codes and proper mix design were defined by testing several initial mix designs. In the last part, main specimens were prepared and tests were conducted on 7, 14, 28, 42 and 90 days specimens. In this research, we used nine mix designs based on 140 kg/m3 cement type- II and Iron ore powder, Iron ore concentrate, Coal Powder and Coke as filler materials passing sieve no. #100 (0.15>) by replacing 3% and 6% of coarse and fine-aggregate content. Finally, the results compared with mineral powder filler as control sample. In order to study the durability and mechanical properties of concrete; maximum density, VB time, compressive strength on 7, 14, 28, 42 and 90 days and 24-hour absorption of specimens on the day 28 were investigated. 2. EXPERIMENTAL PROGRAM The material properties of the concrete mixture used in this experimental study has given in the following. 2.1. MATERIALS 2.1.1. Aggregate Of 0–6, 6–12 and 12–25 mm grain size aggregate used in this study have been widely used in the civil projects in Kerman for years, provided from Gloomak Region. The aggregate grade was designed as existing between the curves of 2- 4-3-A and 2-4-3-B defined in journal No. 55 Iran Standards [5]. The properties of these aggregates are presented in Table 1 and Figure 1, 2. The gradation curves of mixed aggregates consisted of coarse-aggregates (12-25 mm) (33%), fine- aggregates (6-12 mm) (22%) and fine-aggregates passing sieve No. 4 (4.75mm) (45%) compared with the limits set by ACI 207-5R standard, which presented in Figure 3 [6]. 932