3. For a particular aggregate, the bulk specific gravity (Dry) was 2.67,the porosity was 3%, and the absorption was 1%. For another sample of the same aggregate obtained from another storing room, the moisture content was found to be 3%. Calculate: 1. The apparent bulk specific gravity 2. The bulk specific gravity (SSD) 3. The percent of water wetting the aggregate surface.
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- Define the following terms:a. Saturated surface-dry condition of aggregatesb. Absorption of aggregatesc. Free water on aggregatesd. Referring to Figure , which portion of the water in the aggregate reacts with the cement in the PCC mix?A sample of lightweight coarse aggregate weighs 532.3 g when oven-dried, 615.7 g when saturated surface-dried, and 191.3 g when submerged. Calculate the bulk specific gravity, apparent specific gravity, and percent absorption.7 The specific gravity and absorption test (ASTM C128) was performed on fine aggregate and the following data were obtained:Mass of SSD sand = 500.0 gMass of pycnometer with water only = 623.0 gMass of pycnometer with sand and water = 938.2 gMass of dry sand = 495.5 gCalculate the specific gravity values (dry bulk, SSD, and apparent) and theabsorption of the fine aggregate
- Sample of coarse aggregate from a stockpile are brought to the laboratory for determination of specific gravities and absorption. The following masses were obtained.Mass of moist aggregate = 5,982 gramsMass of oven-dried aggregate = 5,892 gramsMass of aggregates submerged in water = 4,082 gramsMass of SSD aggregate = 5,897 gramsDetermine;a) apparent specific gravityb) bulk dry specific gravityc) bulk SSD specific gravityd) absorption, in percente) moisture content of stockpile aggregate, in percentf) free moistureThe specific gravity and absorption test (ASTM C128) were performed on fine aggregate. The following data were obtained.Given:Mass of SSD sand = 400.0 gMass of pycnometer with water = 520.0 gMass of pycnometer with water plus sand = 850.0 gMass of dry sand = 397.0 gRequired:a) bulk dry specific gravityb) bulk SSD specific gravityc) apparent specific gravity aaaaaaaaaaDefine the following terms:a. Saturated surface-dry condition of aggregatesb. Absorption of aggregatesc. Free water on aggregatesd. Referring to Figure 5.9, which portion of the water in the aggregate reactswith the cement in the PCC mix?
- The mass of fine aggregate B has been reduced and weighed to conduct an aggregate test shown in Table 2. (e) Calculate the dry bulk specific gravity, SSD bulk specific gravity, apparent specific gravity, and the aggregate absorption.A mix design requires 1160 kg/m3 of coarse aggregate (in dry condition), 599 kg/m3of fine aggregate (in dry condition) and 148 kg/m3 of water. The absorption capacityof the coarse aggregate is 0.4 % while the moisture content is 1.5%. The absorptioncapacity of the fine aggregate is 0.4 % while the moisture content is 4%. Pleaseanswer the following questions based on information given. a. What is the amount of Moist Coarse Aggregate? b. What is the amount of SSD Fine Aggregate? c. What is the amount of Moist Fine Aggregate? d. What is the amount of water after adjusting for moisture?The following table provides data obtained during a specific gravity and absorption test on coarse aggregate. Using the data, determine the a) apparent bulk specific gravity, b) bulk SSD specific gravity, and c) absorption of the coarse aggregate.
- 46.5 kg of fine aggregate is mixed with 72.3 kg of coarse aggregate. The fine aggregate has a moisture content of 2.0% and its absorption is 3.4% whereas the coarse aggregate has a moisture content of 1.3% and its absorption is 3.0%. Determine the amount of water required to increase the moisture content so that there is 1% free moisture in the aggregate blend.A sample of coarse aggregate was tested in a laboratory to find its moisture content. The wet weight of the sample found to be 5403.5 gr and its dry weight after drying the sample in the oven was 5235.1 gr. Find the moisture content of the aggregate If the absorption of the aggregate was measured as 2.15%, calculate the percent of free water in the original sample.The mass of aggregate B has been reduced and weighed to conduct an aggregate test shown in Table 2. (e) Calculate the: (iii)apparent specific gravity, and the (iv) aggregate absorption.