Assertion A : Lime based mortars give higher ratio of brickwork strength to mortar strength as compared to non-lime mortar. Reason R : Lime based mortars have lower bond strength as compared to non-lime mortars?

Related Mcqs:

1. Assertion A : For identical strength, a composite cement-lime mortar is preferred over cement mortar. Reason R : Composite cement-lime mortar has higher drying shrinkage than cement mortar_____________?

   Select your answer based on the codes given below Codes?

   A. Both A and R are true and R is the correct explanation of A.
   B. Both A and R are true but R is not a correct explanation of A.
   C. A is true but R is false.
   D. A is false but R is true

2. Which of the following will give higher ratio of brickwork strength to mortar strength ?

   A. 1 : % : 3
   B. 1 : Vz: 4>/2
   C. 1:1:6
   D. 1:2:9

3. Rich cement mortars are more liable to cracking as compared to lean mortars because rich mortars have________________?

   A. high shrinkage
   B. less strength
   C. both (A) and (B)
   D. none of above

4. For masonry built in 1:1:6 cement-lime-sand mix mortar or equivalent, the horizontal shear stress permissible on the area of a mortar bed joint is_______________?

   A. 0.15 MPa
   B. 0.125 MPa
   C. 0.1 MPa
   D. 0.075 MPa

5. A high lime content in a composite cement-lime mortar results in______________?

   Consider the following statements.
   1. slow hardening.
   2. quick setting.
   3. weaker mortar.
   select the correct statements.

   A. 2 and 3 are correct
   B. 1 and 2 are correct
   C. 1 and 3 are correct
   D. 1, 2 and 3 are correct

6. The mortars used for masonry construction are classified based on strength in IS 2250 and IS 1905 according to their designations L1,L2, H1, H2, M, M2.

   The correct sequence of increasing order of their strengths is?

   A. LLLZ.HLHI.MLMJ
   B. L2,L,,M2>Mi,H2)H,
   C. M,,M2, H,,H2,Li,L2
   D. L2,L,,M,,M2,H,,H2

7. Assertion A : From consideration of structural soundness and economy of design, most codes control the maximum slenderness ratio of masonry walls and columns. Reason R : By controlling the maximum slenderness ratio, failure is by excessive stress and not by buckling.?

   Select your answer according to codes given below.

   A. Both A and R are true and R is the correct explanation of A.
   B. Both A and R are true but R is not .the correct explanation of A.
   C. A is true but R is false.
   D. A is false but R is true.

8. Assertion A : For eccentricity ratio exceeding 1/6, effective thickness of masonry will get reduced. Reason R : For eccentricity ratio exceeding 1/6, there will be tension on one side of the member?

   Select your answer according to the codes give below.

   A. Both A and R are true and R is the correct explanation of A.
   B. Both A and R are true and R is not the correct explanation of A.
   C. A is true but R is false.
   D. A is false but R is true.

9. Assertion A : Limiting value of slenderness ratio for a column is less than that of a wall. Reason R : A column can buckle around either of the two horizontal axes while a wall can buckle around only one axis.

   Select your answer according to the codes given below.
   A. Both A and R are true and R is the correct explanation of A.
   B. Both A and R are true but R is not the correct explanation of A.
   C. A is true but R is false.
   D. A is false but R is true.

10. Minimum compressive strength in N/mm2 for H1 type mortar used for masonry is_______________?

    A. 3
    B. 5
    C. 7.5
    D. 10