compressive strength of cement mortars

TO DETERMINE THE COMPRESSIVE STRENGTH OF CEMENT USING MORTAR CUBES   EQPT/MATERIAL Weighing balance Glass cylinder Trowel/spatula Cube mould (2” x 2” x 2”) Cement, sand passing US sieve # 20 and retained...

shear force and bending moment diagrams are graphical interpretation of shear and moment across the member. In this tutorial by Dr.Structure, We will learn how to draw these diagrams. Using these diagrams...

Stability Of Trusses A stable truss is the one in which when loads are applied, truss maintains its position and configuration and when loads are removed it comes back to original position. Unstable...

DETERMINE THE INITIAL AND FINAL SETTING TIME OF CEMENT   EQPT/MATERIAL Vicat Apparatus with Initial Set Needle Final Set Attachment Stop Watch Portland Cement Water  PROCEDURE Neat cement paste shall be formed by mixing...

Objective Slump test is used to measure the consistency of concrete mix. Indirectly it is used to check whether workability of concrete mix is up to desired level or not. Equipment Used Slump Cone Tamping Rod Spatula Brush Procedure Cone...
2nd class bricks classification

Bricks Classification is done in order to distinguish between bricks so that they can be used accordingly. Indian Standard is followed in this article to classify bricks. Special type of bricks...

Development length and Lap length Many students get confused between Development length and lap length terminologies.  Lap length addresses the length of the bar needed to transfer the stresses to the other...

Mineral admixtures play an important part in making of High Strength Concrete systems. Before going to mineral admixtures, I will clarify the difference between admixtures and additives Concrete admixtures vs additives: Anything which is...

We all know cracking is one of the major problems in concrete and it should be considered while mix design, but for that, we have to know the sources which can...

Raft foundation In case of soils having low bearing capacity, heavy structural loads are often supported by offering raft foundations. Additionally if the structure is susceptible to subsidence on  being situated in...
How To Succeed In Engineeirng

Many of you will be thinking of joining college and taking engineering as your major. The decision is sometimes tough to make and can get you in hassle if you don't know...

photo source: muzeum1939.pl Underwater Concreting Underwater concreting is same as conventional concreting except for one difference. It is done under water. There are mainly four methods for placing concrete under water which are listed...
hydration of portland cement

Introduction Hydration Of Portland cement is defined as "dissolution-precipitation" process. During this process cement in mix reacts with water and transforms from fluid phase to porous solid matter known as concrete. This process...
dams, barrages, weir

Dams, weirs and barrages all are types of head works used to increase the head of water on upstream side. There is confusion between these terminologies which are explained in this...
Method of joints truss

This tutorial describes force method to determine internal forces in truss members. What is a Truss? Truss is a structure having bar elements connected by pins. We assume that loads are applied only...

Influence Lines for statically determinate beams This video (given below) by Dr. Structure explains the influence line of moments considering the case of statically determinate beams. Influence lines are great tool to determine...

APLICATIONS

Concrete Mix design is complete science and it is based on a lot of research. Popular Mix Design method is highlighted in ACI 2011...