Holooly Plus Logo
Holooly Plus Logo

Question 3.13: Liquid limit tests on a given sample of clay were carried ou...

Liquid limit tests on a given sample of clay were carried out. The data obtained are as given below.

Test No. 1 2 3 4
Water content, % 70 64 47 44
Number of blows, N 5 8 30 45

Draw the flow curve on semi-log paper and determine the liquid limit and flow index of the soil.

The Blue Check Mark means that this solution has been answered and checked by an expert. This guarantees that the final answer is accurate.
Learn more on how we answer questions.

Figure Ex. 3.13 gives the flow curve for the given sample of clay soil. As per the curve,

Liquid limit, w_{l}=50 \%

Flow index, I_{f}=29

3.13

Related Answered Questions

A sample of saturated clay from a consolidometer test has a total weight of 3.36 Ib and a dry weight of 2.32 Ib: the specific gravity of the solid particles is 2.7. For this sample, determine the water content, void ratio, porosity and total unit weight.

Verified Answer:
w=\frac{W_{w}}{W_{s}} \times 100 \%=\frac{3...

The moisture content of an undisturbed sample of clay belonging to a volcanic region is 265% under 100% saturation. The specific gravity of the solids is 2.5. The dry unit weight is 21 Ib/ft^3. Determine (i) the saturated unit weight, (ii) the submerged unit weight, and (iii) void ratio.

Verified Answer:
(i) Saturated unit weight, \gamma_{\text {s...

A sample of wet silty clay soil has a mass of 126 kg. The following data were obtained from laboratory tests on the sample: Wet density, pt = 2.1 g/cm^3, G = 2.7, water content, w = 15%. Determine (i) dry density, pd, (ii) porosity, (iii) void ratio, and (iv) degree of saturation.

Verified Answer:
Mass of sample M = 126 kg.   Volume V=...

A sample of inorganic soil has the following grain size characteristics

Verified Answer:
Percent of fine grained soil = 75 Computation of G...

Mechanical analysis on four different samples designated as A, B, C and D were carried out in a soil laboratory. The results of tests are given below. Hydrometer analysis was carried out on sample D. The soil is non-plastic. Sample D: liquid limit = 42, plastic limit = 24, plasticity index =18

Verified Answer:
Grain size distribution curves of samples A, B, C ...

The following data refers to a silty clay that was assumed to be saturated in the undisturbed condition. On the basis of these data determine the liquidity index, sensitivity, and void ratio of the saturated soil. Classify the soil according to the Unified and AASHTO systems. Assume Gs = 2.7.

Verified Answer:
Liquidity Index, I_{l}=\frac{w_{n}-w_{p}}{w...

A sedimentation analysis by the hydrometer method (152 H) was conducted with 50 g (= Ms)of oven dried soil. The volume of soil suspension is V = 10^3 cm^3. The hydrometer reading Ra = 19.50 after a lapse of 60 minutes after the commencement of the test. Given: Cm (meniscus) = 0.52, L (effective) =

Verified Answer:
From Eq. (3.24)   D=\sqrt{\frac{30 \mu...

A 500 g sample of dry soil was used for a combined sieve and hydrometer analysis (152 H type hydrometer). The soil mass passing through the 75 μ sieve = 120 g. Hydrometer analysis was carried out on a mass of 40 g that passed through the 75 μ sieve. The average temperature recorded during the test

Verified Answer:
From Eq. (3.29)   L=16.3-0.1641 R[/lat...

500 g of dry soil was used for a sieve analysis. The masses of soil retained on each sieve are given below:

Verified Answer:
Computation of percent finer US standard sieve D...

The laboratory tests on a sample of soil gave the following results: wn = 24%, wl = 62%, wp = 28%, percentage of particles less than 2 μ = 23% Determine: (a) The liquidity index, (b) activity (c) consistency and nature of soil.

Verified Answer:
(a) Plasticity index, I_{p}=w_{l}-w_{p}=62-...