International Research Journal of Engineering and Technology (IRJET) Volume: 04 Issue: 02 | Feb -2017
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e-ISSN: 2395 -0056 p-ISSN: 2395-0072
A Study of Construction Chemical Used for Testing in Building Construction Anil Gupta, Rahul Satbhaiya M.Tech Scholar Dept. Of Civil Engineering, Infinity Management & Engineering College Sagar, M.P. India Asst. Prof. Dept. Of Civil Engineering, Infinity Management & Engineering College, Sagar, M.P. India ---------------------------------------------------------------------***--------------------------------------------------------------------i) In these mixes, the slump value is found to be less than the Abstract - - Performance assessment of RCC building
slump value of the reference mix. ii) In the mixes with reduced water content and having water reducers, the slump value is found to be more in the mixes containing 1% dosage than in the mixes having 0.5% dosage. iii) It is seen that mixes containing refined lignosuiphonates and processed lignosulphonates have very low slump value for 15% water reduction and 20% water reduction. It is concluded that they are plasticisers and able to maintain workability up to 15% water reduction even though they enhance strength. iv) While reducing water content and adding water reducers, the 28- day compressive strength increased for 10%, 15% and 20% water reduction than the value of reference mix. This increase is less than that with 1% dosage of processed lignosuiphonates based plasticisers. v) The value of 28-day compressive strength of the mix containing 20% less water than reference mix with 0.5% water reducer was found to be 42.96 N/mm2 which is 55% greater than the strength of reference mix. The water reducer used was naphthalene based one. The corresponding slump value was 11 mm, which is slightly less than that of reference mix. vi) The advantage of adding water reducer to concrete is to lower the water content thereby increasing strength without affecting workability. On comparing the results, it has been seen that melamine based superplasticiser performed best in achieving good strength on reducing water content while maintaining workability.
structures can be done while accessing the chemicals which are being used by the engineers for building the complete.
Testing the chemical used in the building constructing. We have considered three main parameters to test & these are as follows: 1. Water Reducers 2. Water Proofers 3. Strengtheners Tests are as follows: a) 28 Day cube compressive strength b) Split tensile strength test c) Jacketed column test d) Double shear test
1. INTRODUCTION WR Series I i) It is seen that the addition of water reducers increases workability. The slump values and compaction factor values of the mixes containing water reducers are more than that of the reference mix. ii) From the test results, it is observed that the workability values in terms of slump and compaction factor, of the mixes with 1% dosage of water reducers are greater than with 0.5% dosage. iii) Mixes with water reducers having chemical bases refined lignosulphonates, naphthalene base and m0elamine base performed well in producing very high workability. This was observed from the results of slump test and compaction factor test. iv) One of the objectives of adding water reducers is to increase the workability with unchanged strength. On seeing and comparing the results of 28-day strengths of various mixes, it is concluded that melamine based superplasticiser performed best in achieving higher strength in addition to increased workability. WR Series 2
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WR Series 3 The purpose of this series is to prove that the addition of water reducer helps in the reduction of cement without loss of workability and strength and comparing the performance of mixes containing different water reducers. The following are the observations: i) The slump is found to be more in the mixes containing 1% dosage than in the mixes with 0.5 % dose. ii) From the test values, it has been found that the mixes with naphthalene based superplasticiser performed well while reducing cement content without affecting workability and 28 –day compressive strength. iii) the manufacturers advertise that addition of water reducers to concrete results in reduction of cement content without loss of strength & workability thus leading to economy. In this program, the cement content was reduced
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