Global Journal of Researches in Engineering, A: Mechanical & Mechanics, Volume 22 Issue 1

Global Journal of Researches in Engineering (A ) Volume XxXII Issue I Version I 41 Year 2022 © 2022 Global Journals Construction of Concrete Wall with Resistance to Explosions- A View Figure 6: Steel strips modelled as a strengthening technique for structural improvement IV. A nalysis of F ield A pplication a) Field Conditions for Site and Mixture The Experiment was held at a chemical plant which manufactures Cosmetics. For the manufacturing of the Cosmetic high-pressured gas should be introduced which is cautious and we should allocate a special area for this process and it should be protected from any kind of sudden explosions or blasts. The main structure is made of reinforced concrete structure. In this research, the outer wall of the protected area was covered with High-performance fibre-reinforced Cementitious composites (HPFRCC). The applied amount of HPFRCC was about 50 m³ for 3 m depth of the protective wall. The concrete mixture was delivered by the truck with agitator (stirrer) was placed using the ready mixed concrete system mixing at the plant and to placed by the pump. The Target concrete mixture has target compressive strength at 28 days of 25 MPa, and 150 mm of target Slump. Apart from the laboratory test, the field applied concrete has a coarse aggregate of size of 25 mm. To develop workability, combined fiber of SF to PF of 1:1 was replaced by 1% of entire volume of the mixture. b) Test Method To check the properties of the mixture for the real field Work, Slump and Slump flow test for Practicable, air condition and compressive strength for mechanical properties are Noted down. The testing samples were taken from the 1 st and 3 rd agitator (stirrer) truck arrived at the site. Each and every test was conducted following ASTM C143, C1611, C231 and C39 methods for Slump, Slump Flow, Air Condition and Compressive Strength. The Compressive Strength is conducted at 28 days age. The concrete was mixed with a method called Central Mix Method in the ready mixed concrete plant. As the plant doesn’t have the framework of fiber in addition thus the fiber was introduced manually from the provided entrance of the premeasured quantity. The time taken for mixing of HPFRCC was around 1-2 minutes instead of 30-40 seconds of regular concrete to give required workability and diffusion of Fiber. Different methods of delivery and placing of concrete are done with the agitator (stirrer) truck and pump truck.