Experimental Investigation on Polypropylene Fiber Reinforced Concrete With Artificial
The paper presents research work of experimental investigation on polypropylene fiber reinforced concrete by replacing river sand to artificial sand with and without admixture. Use of fiber reinforce polymer in civil engineering increase rapidly. Various type of fiber is used such as glass, carbon, steel, asbestos, polyester and polypropylene. The various experimental investigations for determination of properties of polypropylene fiber are discussed in paper work. This paper presents the effect of polypropylene (PP) fibers on various properties of concrete such as compressive strength, tensile strength, workability, and fracture properties with various content of fiber(0% ,0.5%,1.0%,1.5%). The result of this present investigation indicates that by adding of 0.5% of polypropylene fiber shows maximum compressive and tensile strength.
Experimental study on Polypropylene Fiber Reinforced Concrete Using Manufactured Sand as Fine Aggregate
12345 UG Student, Civil Engineering Department, BGMIT,Mudhol, India 6Assistant Professor, Civil Engineering Department, BGMIT,Mudhol, India ---------------------------------------------------------------------***--------------------------------------------------------------------Abstract – Concrete is a fundamental unit for the infrastructural development of an entire world and is a most commnly used building material for its sustainability, versatility, durability and economy. Concrete is a mixture of cement, sand and aggregate with water. In present situation the availability of natural sand is being decreasing day by day due to its high consumption. Scarcity of natural sand has uplifted the need for its substitute. Manufactured sand is one such excellent alternative material to replace natural sand. Manufactured sand is purpose made crushed aggregate processed by separation, washing, crushing and srubbing. Polypropylene fibres are used in a concrete to enrich the resistance against cracks and to strengthen the concrete. This paper enhances the experimental results of compressive strength, split tensile strength and flexural strength of fiber reinforced concrete with a partial replacement of manufactured sand with variant proprotions (0%, 20%, 40%, 60%, 80% and 100%) and addition of fixed proportion(1% of weight of cement) of polypropylene fibers.
Mechanical behaviour and durability of high volume fly ash cementitious composites
The purpose of this research is to separate different morphological particles of ASTM class F fly ash, and study their effect on mechanical behaviour and durability of high volume cementitious mixtures. In this research wet separation of raw fly ash is carried out, which resulted in three layers of different morphological particles. The first layer of particles float, comprise of about 1-5% of fly ash, is identified as cenospheres or hollow spheres. The second layer of particles is measured to be 55-60% of raw fly ash and consisting of porous spherical and rounded particles rich in Si and Al. The third layer particles is measured to be about 35-40% of raw fly ash. High volume fly ash cementitious composites containing second or third layer particles are tested under compression and bending, highlighting a higher strength and ductility in comparison to cementitious ones containing raw fly ash particles. KEYWORDS. Cementitious matrix; Raw fly ash; Second layer particles; Third layer particles.