The basis for such a classification is the physical properties of rocks, the manner and arrangement of different particles and mass forming a stone. They are classified as follows: (i) Stratified Rocks Stratified structure is formed due to the splitting of a series of parallel layers of sedimentary rocks. They exhibit distinct layers which can… Continue reading Physical Classification
Month: January 2023
Geological or Genetic Classification
According to the geological classification, rocks are subdivided into three large groups, viz., igneous rocks, sedimentary rocks and metamorphic rocks.
CLASSIFICATION OF ROCKS
The origin and conditions of rock formation predetermine their chemical and mineralogical composition, crystalline structure and texture. These characteristics, underlying the strength and decorative properties of rocks, are the starting point for the engineering and economic evaluation of rocks for various structures of buildings and installations. The three major classifications are based on the following… Continue reading CLASSIFICATION OF ROCKS
INTRODUCTION
The earth’s crust is composed of rocks. Rock is a mineral mass of a more or less uniform composition. It may consist of a single mineral (monomineralic) or of several minerals (polymineralic). A mineral is a natural body, homogeneous in chemical composition and physical properties. Further minerals are the products of physical and chemical processes… Continue reading INTRODUCTION
Precautions
The following precautions have to be observed:
Uses of Lime Concrete
Lime concrete is used for
Preparation of Lime Concrete
Good lime concrete is prepared using hydraulic lime. Fat lime is not used as it is not suitable to use in large masses. The sand to be used should be free from impurities. The coarse aggregates used for lime concrete are broken bricks or broken stones. The water used should be clean. The mix proportion… Continue reading Preparation of Lime Concrete
Properties of Lime Concrete
LIME CONCRETE
Ingredients of Lime Concrete Lime concrete is made of lime, fine aggregate and coarse aggregate and mixed in suitable proportions in addition to water. Hydraulic lime is generally used as a binding material, sand, surkhi and cinder are used as fine aggregates, and broken bricks or broken stones are used as coarse aggregates.
Pulse Velocity Method
It consists of two parts, viz., the mechanical ionic pulse velocity method and the ultrasonic pulse velocity method. The mechanical sonic pulse velocity method consists of measuring the time of travel of longitudinal or compressive waves generated by a single impact hammer blow or repeated blows. The ultrasonic pulse velocity method consists of measuring the… Continue reading Pulse Velocity Method