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This research revisits on high strength concrete (HSC) using common admixtures, looking at the fundamental requirement to achieve the HSC. Basic requirement of HSC is low water-cement (w/c) ratio. In this project, silica fume (SF) is the mineral admixtures be applied in the mix, and Super plasticizer (SP) is the chemical admixtures used to enhance workability while reducing water content strength are studied. Concrete cubes size 100 x 100 x 100 mm a compressive strength. The highest average 7 MPa. Thus, the expected strength after 28In this study, the mix with 10% of silica fume plasticizer to one m 3 concrete mix seems to produce the best result. J Fundam Appl Sci. 2017, 9(3S), 546-554 547 strength (more than 50 MPa) when compared to common conventional concrete (20 to 40 MPa)[4]. The product can be more economical even though its initial cost can be higher compared to the common conventional concrete. This is because the used of HSC will generate a lighter structure, more long lasting structure and the service life of the structure can be extended. Due to this condition, the structure can resist damage and this will decrease overall cost for maintenances. Proper design and production are the main factor that will influence the quality of the HSC [10][11][12][13][14][15][16][17][18][19][20][21][22].This research will revisit the development of HSC. The used of HSC in the construction industry, especially in the construction of bridges, skyscrapers, mega structures and many other type of structures that demand the used of high strength concrete is the main motivation for this technology [3]. The used of the HSC will be very beneficial since it will reduce the size and weight of the structure and consequently will reduce the size of the foundation. Besides that, the usage of HSC will be more economical for life-cycle cost performance. Further, it will reduce the use of natural resources such as cement and aggregates due to smaller structural elements.The objectives of this research are to design and test HSC mix using state-of-the-art technique in order to achieve mean compressive strength of 40 MPa or more in 7 days, and to investigate the effects of using silica fume (SF) and super plasticizers (SP) on compressive strength of concrete [1].Finally, the effect of carbon fiber in concrete mix will be tested.Based on the literature, the pillars of practical mix design for HSC are low water-cement ratio, used of super plasticizers, application of cement with a high strength [6] potential and application of pozzolans and in particular silica fumes [14,21]. HSC can be produced with water-cement ratios in the range of 0.22-0.40 and the resulting 28-days compressive strength are in the range of 60 to 130 MPa. The maximum size of coarse aggregates should be kept to a minimum at 9-12 mm in order to achieve optimum compressive strength with high cement content and low water-cement ratio. According to [8] to make the concrete mix design for high performance concrete (HPC), the aggregates size used in the matrix...

Ground Granulated Blast-Furnace Slag (GGBS) being used as partial cement replacement in mortar mixed for wall finishing. This research was conducted to determine the mechanical properties of cement mortar when added with GGBS. GGBS as generally is a by-product from the production of waste materials from Iron Industry. Mortar is a mixture of cement, sand and water and normally being used as wall finishing and bricklaying binder. The additional of GGBS being integrated with the cement mortar mix to enhance the strength of the building element. Appropriate mixture proportions and mixing procedures are in the range of 10% to 40% of GGBS in the cement mortar. The testing includes the compressive strength, flexural strength test and split tensile strength test. Comparison between the control sample and the research sample were done to determine the suitability to be used in industries. The result obtains from this research shows that cement mortar with 30% GGBS is the optimum composition because it gives the highest result of strength in term of compression, flexural and tensile compare to the control sample. This research proved that GGBS can be effectively used in cement mortar for wall finishing.

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Interlocking Brick System (IBs) is one of the current technologies used in the construction of load bearing walls. The concepts behind the IBs include the elimination of the mortar layer. The interlocking brick system investigated in this study is load bearing interlocking brick beam system relied on U-shaped hollow bricks in bed row to form beam to transfer load from wall opening. Reinforced concrete grout stiffeners were added in vertical and horizontal directions to enhance the stability and integrity of the beams. Mortar and grout are used as infill material. Generally, in this research, specimens are prepared for full scale testing with different parameters in reinforcement and fillings. The size of interlocking brick is 125 mm x 250 mm x 100 mm and the diameter of reinforcement bar (rebar) used is 12 mm. The dimension of the interlocking bricks beam is 2130 mm length, 125 mm width, and 300 mm height. The arrangement of hollow interlocking brick in bed row will causes a ductile behavior which will be mitigated by the horizontal reinforcement coated by mortar or grout between two layers of hollow brick.