Coarse-grained soil and fine-grained soil are two different types of soil that can be identified based on their texture or ‘feel’ and particle size. It is very crucial to observe the range of particle sizes in soil as it heavily ...
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Initial Setting Time and Final Setting Time of Concrete
The initial setting time of concrete is the time when cement paste starts hardening while the final setting time is the time when cement paste has hardened sufficiently in such a way that a 1 mm needle makes an impression ...
Blended Cement – Characteristics, Types and Uses
Blended cement can be defined as uniform mix of ordinary Portland cement (OPC) and blending materials such as silica fumes, fly ash, limestone and slag to enhance its properties for different uses. Blended cement can improve workability, strength, durability and ...
Inspection and Testing of Ready Mix Concrete
Inspection and testing of ready mix concrete is crucial to ensure that all specified conditions meet the acceptable criteria. Ready mix concrete, which produced in batching plant and transported to construction site by truck mounted mixers, are commonly inspected and ...
Sandcrete Block Manufacturing and Testing
Sandcrete blocks and bricks are masonry units manufactured from a mixture of cement, sand and water, and it plays a crucial role in the building construction. Sandcrete blocks are largely used for load bearing and non-load bearing walls and foundations. ...
Consolidation Test on Soil by Consolidometer or Oedometer
Consolidation Test is used to determine the rate and magnitude of settlement in soils. The settlement values obtained by this test are due to primary consolidation only which is 90% of the total consolidation. The results of consolidation test are ...
Various Codes for Construction Material Testing
Various standard codes for testing of construction materials are specified by ASTM international, Eurocodes, IS Codes, BS Codes, etc. These codes specifies testing procedure and methods for concrete, masonry, aggregates, steel, soil and other building materials. Codes and standards are ...
Role of Gypsum in Cement and its Effects
Gypsum is a mineral and is hydrated calcium sulphate in chemical form. Gypsum plays a very important role in controlling the rate of hardening of the cement, so its is generally termed as retarding agent of cement. It is mainly used ...