Course: B.Tech (Semester V) Subject Code: KCE-051
Subject Name: Concrete Technology Time: 3 Hours
Total Marks: 100
Note: Attempt all sections. If any data is missing, assume suitably.
Section A – Short Answer Questions (2 × 10 = 20 Marks)
Attempt all questions briefly:
Role of gypsum in cement manufacturing Types and grades of Ordinary Portland Cement (OPC)
Use of workability agents Effect of air-entraining admixtures
Why weigh batching is preferred over volume batching
Use of needle vibrator in compaction Meaning of coefficient of variation
Objectives of mix design Tests for workability of self-compacting concrete
Difference between High-Strength and High-Performance Concrete
Section B – Descriptive Questions (10 × 3 = 30 Marks)
Attempt any three:
Hydration process of cement in detail Bonding admixtures and their use in retrofitting
Factors affecting workability of concrete
Define and explain standard deviation, coefficient of variation, and mean strength
Fiber Reinforced Concrete (FRC) – properties and applications
Section C – Long Answer Questions (10 × 5 = 50 Marks)
Q3
(a) Characteristics of aggregates or (b) Suitability of any three types of cement
Q4
(a) Role of accelerating and retarding admixtures or (b) Effect of pozzolana on concrete quality
Q5
(a) Methods of transporting concrete from mixing to deposition
or
(b) Objectives and methods of compaction of concrete
Q6
(a) Design a concrete mix (M30) using IS 10262:2019 with given parameters (aggregate type, exposure, workability, etc.)
or
(b) Design mix for M30 grade concrete for an elevated water tank with specific data (slump, specific gravities, exposure, etc.)
Q7
(a) Ready-Mix Concrete (RMC) – uses, limitations, and future scope
or
(b) Self-Compacting Concrete (SCC) – properties and applications
