ASTM D4380 Density Test of Bentonite: A Quick Guide
Learn the ASTM D4380 bentonite density test using a mud balance, including calibration, test procedure, calculation, and key precautions.
QA & QC
Ultrasonic Pulse Velocity Test of Concrete IS 516 (Part 5/Sec 1)
Ultrasonic Pulse Velocity (UPV) Test of Concrete The Ultrasonic Pulse Velocity (UPV) test is a non-destructive test used to assess the quality and uniformity of hardened concrete without damaging the structural member. It is particularly useful for identifying areas that may contain cracks, voids, honeycombing, or other internal defects. Reference Standard IS 516 (Part 5/Sec … Read more
Oxygen Permeability Test of Concrete — IS 516 (Part 2/Sec 3): 2022
Oxygen Permeability Test of Concrete The oxygen permeability test is a durability test used to assess the permeability of hardened concrete to gas. It provides an Oxygen Permeability Index (OPI), which is particularly useful for evaluating the quality and durability of the concrete cover. Reference: IS 516 (Part 2/Sec 3): 2022, Hardened Concrete — Methods … Read more
25+ Codal Provisions from IS 516 (Part 1 / Section 1): 2021 – Testing of Hardened Concrete
Codal Provisions from IS 516 (Part 1 / Section 1) If you are involved in construction, quality control, or civil engineering, keeping up with standard codes is crucial for safety and compliance. The Bureau of Indian Standards updated its concrete testing protocols with IS 516 (Part 1 / Section 1): 2021. This comprehensive standard outlines … Read more
PROCEDURE FOR LAYING AAC BLOCK MASONRY WORK [A HOW TO GUIDE]
ACC block stands for autoclaved cellular concrete block. The ACC block is a valuable addition to the masonry units accessible to masonry contractors. Advantages of cellular concrete block masonry over brick masonry are its lightweight design, minimal mortar use, and faster working speeds Many contractors are unfamiliar with the usage of autoclaved cellular concrete blocks. … Read more
HOW TO CHECK SUITABILITY OF WATER FOR CONCRETE MIXING?
SUITABILITY OF WATER FOR CONCRETE MIXING OBJECTIVE To assess suitability of water for use in concrete mix. Equipment Measuring cylinder Cube moulds Trowel Tamping rod Vibrating table Testing machine Procedure Analyse water for its chemical compositions as per IS 3025-1964 and compare these with permissible limits given in IS: 456-2000. In case water does not … Read more
QUALITY CONTROL CHECKLIST FOR EXCAVATION WORK
Earth Excavation Checklist The following checklist should be used as a guide for better quality control over earth excavation. (1) Prior to the start of excavation operations, take photographs of the construction area, make sure that sufficient cross—sections are taken, and continue to take progress photographs during construction. (2) Review the log of borings to … Read more
WHETHER OR NOT TO SELECT CONCRETE FOR CONSTRUCTION?
FACTORS AFFECTING CHOICE OF CONCRETE FOR A STRUCTURE The choice of whether a structure should be built of concrete, steel, masonry, or timber depends on the availability of materials and on a number of value decisions. 1. Economy Frequently, the foremost consideration is the overall cost of the structure. This is, of course, a function … Read more
PPC or PORTLAND POZZOLANA CEMENT
Portland Pozzolana Cement 1. Pozzolana Pozzolana is a volcanic powder found in Italy near Vesuvius A pozzolanic material is essentially a siliceous or aluminous material which possess no cementitious properties. But it has the property when it combined with lime to produce a stable pozzolana compound it has definite cementitious properties. In the presence of … Read more
PLASTERING – THINGS EVERY ENGINEER SHOULD KNOW
PLASTERING The following topics are covered in this post. What is plastering? What are the requirements of good plaster? Different types of mortars for plastering Number of coats of plastering How to preparation of background before plastering? What are the recommended mortars mixes for different situation? What are the defects in plastering? What is plastering? … Read more
