Answered: soil is computed by dividing the wet…

soil is computed by dividing the wet mass by the area of the mold used True O False O The saturation line should be parallel to the dry side of the compaction * .curve True O

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter3: Weight-volume Relationships And Plasticity

Section: Chapter Questions

Problem 3.1P

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Question

In soil mechanics

The wet density of the compacted
soil is computed by dividing the wet
mass by the area of the mold used
True O
False O
The saturation line should be parallel
to the dry side of the compaction
* .curve
True
False
At maximum dry density there are
more than one water content (O M C)
True O
False O

Branch of science that deals with the stationary and moving bodies under the influence of forces.

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Please use formula
SURFACE MOISTURE OF FINE AND COARSE AGGREGATE Pycnometer or Flash Method make up computation, make one Mass of specimen (S) Mass of pycnometer + water (C) Mass of pycnometer + water + specimen (W) Mass of displaced water (V) Specific Gravity, G 2.86 D = S/G % surface moisture
A saturated aggregate sample with an absolute volume of 5.05x10^-5 m^3 has a mass of 178 g before drying and 139 g after drying in an oven. Assume the water absorption by volume to be 59.18%. Determine the following: a. Specific gravity of the solid particles b. Mass specific gravity c. Void Ratio d. Porosity
Q-5) Answer (True) or (false) and correct if (false). 1. C,S need more than twice amount of water from C,S to hydration. 2. Calcareous material as a source of silica and alumina in manufacture of Portland cement. 3. Rough surfaces of aggregate improve mechanical bond. 4. Saturated surface dry condition (SSD) of aggregate means all internal pores are saturated with water and its surface wet. 5. Iraqi specification No. 5 limited Sulfur oxide in the cement as max. by 2.8% when C3A > 5%.
Example 2: Specific gravity test was conducted for a fine aggregate. If the following data was obtained during the test: - the saturated surface dry weight of the sample = 500 g. %3D - Weight of pycnometer full of water= 750 g - Weight of pycnometer and sample and water= 1050 g. - Oven dry weight of the sample is 475 g. for this aggregate, FIND - The apparent specific gravity. - The bulk specific gravity on an ssd basis. Percentage of absorption.
2) Two aggregates (Al and A2) were obtained from the field. They were brought to the oven dry condition (OD) and weighed. Data for each of the aggregates is presented in the table below. (Density of water=lg/cm³) Table 1. Absorption capacity and moisture content data. A1 A2 600 g 600 g Field Weight Oven Dry Weight Absorption Capacity (%) | 0.6 % 595.3 g 598.3 g 0.7 % a) Describe the field moisture state of each aggregate, Al and A2 (i.e. wet, SSD, or air dry). For each sample would you add water or dry the sample to bring it to SSD state? Determine the expected mass of each sample in the SSD state. b) If the bulk volume Al oven dry is 220 cm³ and the bulk volume of A2 oven dry is 250 cm³, determine the bulk oven dry specific gravity for each aggregate, Al and A2.
Aggregate particles are classified as flaky (Aggregate Shape test) when they have a thickness (smallest dimension) o А. Less than 0.6 of their mean sieve size. В. More than 0.6 of their mean sieve size. C. More than 0.5 of their mean sieve size. D. Less than 0.5 of their mean sieve size. B.
Answer 5.8
Please solve
A sample of wet aggregate 297.2 N. After drying in an oven, this sample weighed 281.5. The absorption of this aggregates is 2.5%. Calculate the percent of free water in the original wet sample. Weight of the wet aggregates (Wwet) = 297.2 N Weight of the dry aggregates (Wdry) = 281.5 N
Calculation: Mmoist - Maryx 100% MC = : Mary Where: MC = moisture content in percent Mmoist = mass of original specimen Måry = mass of oven dry specimen Tabulated Data and Result Sample No. Mmoist (kg) Mdry (kg) MC 1 0.5 0.25 0.4 0.18 3 0.5 0.22 4 0.3 0.13
2) Two aggregates (Al and A2) were obtained from the field. They were brought to the oven dry condition (OD) and weighed. Data for each of the aggregates is presented in the table below. (Density of water=1g/cm') Table 1. Absorption capacity and moisture content data. A1 A2 Field Weight 600 g 600 g 598.3 g Oven Dry Weight Absorption Capacity (%) 0.6 % 595.3 g 0.7% a) Describe the field moisture state of each aggregate, Al and A2 (i.e. wet, SSD, or air dry). For each sample would you add water or dry the sample to bring it to SSD state? Determine the expected mass of each sample in the SSD state. b) If the bulk volume Al oven dry is 220 cm and the bulk volume of A2 oven dry is 250 cm2, determine the bulk oven dry specific gravity for each aggregate, Al and A2. MONSTER E12 PRT SC PAUSE う