As a result, cohesive crack existed where it will produce break on concrete. Glass fibre also acted as crack arrester. This can be explained when the first crack occur in the matrix where the strong fibre pick up the load. In other words, it meant the support was stronger than the matrix itself where more load will only produce new crack but glass fibre will immediately arrest the crack in order to avoid first crack from propagating
Slump Flow Test: This test is conducted to measure the flow ability of self-compacting concrete. The measured characteristics of slump flow test are filling ability, viscosity and stability. 2. J Ring Test: This test helps to find out the passing ability of the concrete. The apparatus consists of rings of reinforcing bar around a standard slump cone.
Ready mixed concrete containing polypropylene fibers can be placed using conventional methods. The entrapped air must be expelled in order to ensure maximum performance. Also during the process of incorporating of polypropylene fibers more compaction must be done than for the plain Concrete. Generally, polypropylene fibers, when mixed with concrete, respond well to conventional compaction techniques and fibers do not easily segregate from the mix. POLYPROPYLENE FIBER MANUFACTURE: The commercial production of polypropylene started in 1960s.Two forms of polypropylene fibers started being available one was monofilament and other was film fiber.
Polyethylene is an ideal material to use in the construction of piping. Polyethylene is categorized according to their density and molecular structure. Ultra-high molecular weight polyethylene (UHMWPE) is tough and resistant to chemicals. It is used to manufacture moving machine parts, bearings, gears, artificial joints and some bulletproof vests. Besides that, high-density polyethylene (HDPE) is recyclable plastic which commonly used as milk jugs, liquid laundry detergent bottles, outdoor furniture, margarine tubs, portable gasoline cans, drinking water distribution systems, water drainage pipes, and grocery bags.
Experimental study of sliding baseisolated buildings   with MR Dampers in near-fault earthquakes was conducted in which use of supplemental nonlinear passive dampers in the isolation system reduces the base displacements, however, this increases the interstorey drifts and accelerations in the superstructure. II. DESCRIPTION OF BENCHMARK BASE-ISOLATED BUILDING A 3D benchmark model of an eight-storey base isolated building with lateral-torsional behavior has been developed as per the directions of ASCE Committee . It is similar to the existing building in Los Angeles, California. The building has a rigid steel-framed superstructure and consists of eightstorey.
COMPARITIVE STUDY OF RESPONSE OF MULTI STOREY BUILDINGS SUBJECTED TO EARTHQUAKE FORCES WITH AND WITHOUT DAMPERS D.V.BANGARA RAJU1, CHANDAN KUMAR.PATNAIKUNI2 1 D.V.Bangara Raju, M.tech student, Department of Civil Engineering, Gitam University, Andhra Pradesh, India 2 Chandan Kumar Patnaikuni , Assistant Professor, Department of Civil Engineering, Gitam University, Andhra Pradesh, India Abstract Dampers helps in reducing the vibrations caused by wind and earthquake. By using dampers we can improve the resistance of building towards the forces which are caused by earthquakes .In this study an attempt has been made to compare the results of equivalent static method and response spectrum method of seismic analysis for various models with
Fundamental purposes behind utilizing self-compacting concrete are to guarantee compaction in the structure., particularly solid work in limited zones where vibrating compaction can be put effectively in complicated formwork and dense reinforcement. Furthermore, self-compacting concrete can eliminate noise during concrete works due to vibration with more
Based on the simulation result, we have known that the assembly sequence has a significant influence on the final distortion. Asifa Khurram et al.This paper presents an efficient FE technique using equivalent load to precisely predict welding deformations and residual stresses
Micro-level concept also enables accurate modelling of ordinary infill, infill with openings, non-strengthened infill, strengthened infill and other different types of infill. Based on developed computer program and successful theoretical results, it has been expected that this modelling concept will be widely adopted in modern earthquake engineering. (8) 1.1.4. Disadvantages Micro models are particularly suited for small structures and involve rigorous calculations, whereas macro level model saves times and uses less memory too. (8) 1.1.5.
The slump test is used to ensure uniformity for different batches of similar concrete under field conditions. The test procedure was in accordance with BS 1881: Part 102: 1983 (cited in Ministry of works, 2000). Main Principles The slump test is carried out by filling a specified mould with freshly mixed concrete and measuring the slump after removal of the mould. The method applies to cohesive concrete of medium to high workability, and with maximum aggregate size of 40mm. Equipment used in this procedure was • A slump mould of galvanized iron or steel.