Solution:- When more water is added to concrete, high dense cement will go down the bottom and less dense cement particles will float on the top surface of water. Also bleeding and segregation occur. So finally concrete gets weaken as a result of increase in water added to a concrete mixture. From given options, (a) is the correct answer.
Question 13 Not yet answered Points out of 3.00 P Flag question An increase in water...
Question 5 Not yet answered Points out of 3.00 P Flag question Soundness of an aggregate indicates its resistance to weathering. Select one: True False Question 6 Not yet answered Points out of 3.00 P Flag question RAP is an acronym for Residuum Asphaltic Pavement Select one: True O False
Question 7 Not yet answered Points out of 3.00 P Flag question ESAL an acronym for Equivalent Single Axle Load Select one: True False Question 8 Not yet answered Points out of 3.00 p Flag question A pycnometer measures grain size. Select one: True False
Question 13 Not yet answered Marked out of 3.00 p Flag question What is the major product of the reaction below? 1) NaH 2) CH2CH2Br Select one: O a. ob. O c.
Question 9 Not yet answered Points out of 3.00 P Flag question A Rotational Viscometer is used to determine the viscosity of asphalt binders in the low temperature range, Select one: True O False
Question 14 Not yet answered Points out of 3.00 P Flag question What is the SAE classification for a steel with 3.5% nickel and 20% carbon. Select one: a. 3320 b. 2320 O c. 2315 O d. 3215
Question 30 Not yet answered Points out of 3.00 P Flag question The level of saturation at which the cell walls are completely saturated, but no free water exists in the cell cavities is called the Select one: a. EMC b. free water point c. FSP d. MC
Question 17 Not yet answered Points out of 3.00 P Flag question What is a typical maximum percent of the carbon in the steel used for structures? Select one: a. 0.60% O b. 2.5% C. 0.25% O d. 3.0% e. 12%
Question 15 Not yet answered Points out of 3.00 P Flag question What is the preferred ASTM steel designation for Rectangular HSS sections? Select one: a. A53 Gr. B O b. A36 C. A992 O d. A500 Gr. B-46
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Not yet answered Marked out of 3.00 p Flag question What is the relationship between the two molecules? CI CI Select one: O a. conformations o b. diastereomers O c. constitutional isomers d. enantiomers Question 40 Not yet answered Marked out of 3.00 Hag question What is the major product of the reaction below? Br2 hv
Question 18 Not yet answered Points out of 3.00 P Flag questi Slump is a measure of Select one: a. laziness b. air entrainment c. workability d. strength