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Fertility Of Concrete Lab Report

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CHAPTER 3
EXPERIMENTAL INVESTIGATION
3.1 General
The experimental work was done to evaluate the effect of waste glass powder on the technical properties of concrete. The waste glass generated from glass industries and basically generated from broken doors and windows are grounded fine and used for the partial replacement of cement. For studying the effect of glass powder on compressive strength of concrete, density and water absorption, 150mmX 150mm X150 mm specimens were casted by partially replacing the cement from 0% to 25 % with an interval of 5%. Similarly the beams of size 100mm x 100mm x 500 mm were casted to determine the flexural strength of the cement. The mix design was prepared as per IS 10262:2009. The specimens were casted and …show more content…

Adjust that it shows zero reading when touches the non-porous plate. The plunger is released and reading is noted.
Quantity of cement = 400gm
Quantity of water in %, P = 33% Figure 3.1 VICAT APPARATUS
3.3.1.2. Setting time Test
Vicatapparatus with 1mm2needle is required for this experiment.
The time consumedfrom the addition of water in cement to the point at which needle fails to penetrate the test sample to a depth of 5mm from the bottom is known as Initial Setting time. While Final Setting time is the time consumed from the addition of water in cement to the time at which needle of 1mm2 with 5 mm diameter attachments fails to make an impression on the sample.
PROCEDURE:
A sample of 400gm is taken. 0.85 P % water by weight of cement is added and mixed, where P is normal consistency. Fill the Vicatmould and level the surface of the mould. The gauging time should be in between 3 to 5 minutes. The needle is brought near the top surface of cement paste and released. Step d is repeated till the needle fails to penetrate the cement paste about 5mm from the bottom of the mould.This time, is noted and is Initial setting time. The needle is replaced by the angular …show more content…

The test is performed to determine the fineness of cement i.e. whether the cement is properly grounded or not. Finer the particle, higher will be the rate of hydration and the development of strength will be quick.
PROCEDURE:
Take 1000 gm of cement and place it on 75µm sieve. The cement is sieved and the weight of cement-retained on the sieve is noted. Calculate the percentage retained and should range from 0 – 10%.
Table 3.2 FINENESS OF CEMENT
Observations Test 1 Test 2 Test 3
Weight of cement, gm 1000 1000 1000
Weight of cement-retained, gm 40 35 37.5
Percentage Weight retained, % 4% 3.5% 3.75%
Average % Weight retained 3.75%
3.3.1.4 Specific Gravity
The specific gravity of cement is defined as the ratio of the weight of a given volume of cement to the weight of an equal volume of water.
The specific gravity bottle is used for this experiment.
PROCEDURE:
The weight of empty bottle is noted i.e. w1. Now the bottle is filled with distilled water and the weight is noted i.e.

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