02534nam a2200181Ia 4500999001700000100006700017100001800084245008600102260001400188260001000202260000900212300000700221500195500228700003602183856003302219942001102252952008902263  c58191d58188  aSeema Balouch a14MCE08aSupervisor  Prof. Dr Noor Ahmed Memon  aSeema Baloch  0aFundamntal Strength Properties of concrete with Polypropylene Fiber (ME Thesis)    aNawabshah  bQUEST  c2014  a45  aABSTRACT

Concrete is considered as main material in the construction industry. It is produced with the conventional ingredients.
aggregates, cement and water It is very strong in compression and weak in tension. Also it exhibits poor flexural toughness and post crack response. Generally steel fibers are very common in use. Fibers work in concrete as  crackarrestors . In Pakistan the use of fibers in concrete is very seldom and particularly fibers other than steel. This experimental study reports the effect of ‘polypropylene fiber' on workability and fundamental strength properties of concrete. The concrete of I :2:4 is cast with casted water­
cement ratio of value 0.5. the fibers extruded from the wheat bags available in local market.
.the fibers were used with uniform length of 2". The dosage of fiber content added from 0% to 2o/o with increment of 0.25% A batch of normal concrete of same proportion but without fibers was also cast for the comparison purpose. Thus in all 09 batches were cast. The effect of fibers was studied in terms of workability , compressive strength and tensile strength . Workability is determined by slump test, whereas the cube and cylinder specimen of standard size was cast to evaluate the compressive and tensile strength respectively. Tensile strength   is evaluated by   indirect tensile strength method (splitting tensile   strength   of Cylinders) in each case 05 specimen were tested to achieve the representative mean value. The result it revealed the decrease in workability with the addition of fibers even converting control content of normal slump value into no slump concrete (Zero slump). When fiber content added is 1.75% in concrete. The compression and tensile strength increased upto 1% of polypropylene fiber and then decreased. The Polypropylene fibers are observed to be more effective in case of tensile strength than the compression strength at the same percentage of fibers.

 

  aDepartment Of Civil Engineering  uhttps://tinyurl.com/bde3mzxj  cTHESIS  00104070aRESEARCHbRESEARCHd2018-03-27l0pMP18-187r2018-03-27 00:00:00yTHESIS