Tech Civil | civil and construction technology blogs.

Colour of Cement . Cement has become the basic and important part in the Feild of construction. Earlier Egyptians used calcined gypsum as cement and greeks and Roman used lime made by heating limestone and added mortar with coarsar stones for concrete. And then finally in cement was discovered in 1824 by burning finely ground chalk and clay until carbon dioxide is removed. Now cement and its composition is well known by anyone . But how many of them know why cement is grey in colour ? Generally cement is not fully grey in colour. Instead it also consists whitish grey colours also . This whitish Grey colour of the cement is due to the presence of iron  in the cement. This is because to make white cement, we need ingredients which donot dicolour it. The primary culprit is Fe2O3 . In the other ingredients (limestone , clay and little gypsum ). Chromium and Manganese are also a source of discoloration. However, making white cement requires sintering into clinker at around 1600C

Super wood . We all know how steels are used in construction mainly because of their durability, strength and resistance. In this the most common steels used are carbon steel, aluminium, copper tubing and Stainless steel and even titanium  . But now engineers have found something which we would call as the  super wood.  Yes, thats right in early days we used woods for conconstruction.  Mainly  in America . But now because wood lack in strength we use steel . But the're is no need of that as we have super wood . New process could make wood as strong as titanium  alloys but lighter and cheaper.  Engineers at the university of Maryland have found a way to make wood more than 10 times stronger and tougher than normal  .  And the cost is also cheaper than any steel . Engineers  say that this wood can even compete  with the ultimate  carbon fibre . They say that it is strong as steel, but six times lighter than it. The team tested the wood by shooting bullet at the normal and th

Building materials The construction of any engineering structure requires wide range of materials called engineering materials or building materials . Building materials play an important role in modern technology. Building material industry is an important contributor in our national economy, as its output governs both the rate and the quality of construction work. The choice of the building materials is wide open with the rapid advancement of constructional methods, mechanical tools and plants and variety of materials. But the materials chosen should have such properties that they are safe, economical, eco-friendly and serviceable for the purpose for which they are used. The building industry economists should have working knowledge of building materials, their Optimum application based on their principal properties and their manufacturing techniques, in order that the buildings and installations may have optimum engineering, economic  performance and efficiency. The

Types of survey  We all know what surveying in civil engineering means and in civil engineering survey there are two types Geodetic and plane survey. What is Geodetic survey? The survey in which the shape and curvature of earth is taken into account. Here the true shape of the earth is taken into consideration. This type of surveying is being carried out for highly precise work and is adopted for surveying of large area. It is also called as land survey because curvature of earth is taken into consideration. Since we know that we cannot place two points or draw a straight line on earths surface we use geodetic survey . The term geodetic was taken because earths shape is geoid . A definite limit can not be set for the area upto which a surveying may be treated as plane, as the degree of accuracy required is the main factor we use geodetic survey. What is plane survey? The survey in which the shape of the earth is not taken into account. As we have discussed the geodeti

What is the scope of surveying?? As we all know survey is the process of measuring land in order to find out its boundaries. Surveying includes levelling ,in which it is possible to find the elevations or levels or height of the points with respect to a given or assumed datum. Levelling is essentially a process of determining the positions of  the points in a vertical plane . Surveying-dailyblogger Scope of surveying are :  In preparation of plan and maps .when we plot drawn all the survey points on paper will constitute a plan . To know the dimensions of any construction site . To establish boundaries of land . To measure area and volume of land . To choose proper site for an engineering project. To conduct all kinds of survey(engineering survey, topological, military, environmental survey, global positioning survey etc). To get information about physical earth , environment in 3D space . Objective of survey The objective of survey is to collect field data

What is survey ? Surveying is a science and art of determining the relative positions of points on, above or beneath the surface of the earth by means of measurement of distance, direction and elevation either directly or indirectly. lt is essential in a process of determining the positions of horizontal and vertical directions in a plane. These the professional survey definition but survey is actually the method or way from which all  planning and design of all civil engineering projects such as construction of highways, bridges, tunnels etc are based on survey measurements . Survey is used to do different civil engineering tasks .Surveying includes levelling, in which it is possible to find the elevations or level or heights of the points with respect to a given or assumed datum. levelling is essentially a process of determining the positions of points In  vertical plane. Without surveying the construction work cannot be carried on , so surveying is the basic requirement for

What is the Scope of civil engineering?? Civil Engineering is the oldest branch of the profession of engineering. This is why civil engineering is called mother of engineering . Civil Engineering looks into the public needs to meet the necessary infrastructure demands of the society.It deals with improving the quality of life. So meeting peoples needs and thinking increased development in construction technology. Civil Engineering involves number of operations right from surveying, planning, analysis, design, estimate, execution of work and maintain the structures for its life time . Civil Engineering is a vast area. The first but built with bamboos and leaves can be taken as the first Civil Engineering construction carried out to satisfy the needs for shelter/ The scope of civil engineering is increasing development and need of construction materials,techniques and facilities. Civil Engineering has created scope by providing and achieving new things among them construction is

Who built the pyramids  The great pyramid of giza which is one of the seven wonders of the world situated 15 miles from the centre of modern Cairo . So now many had this question or doubt or we could call it a secret that who built the pyramids and what is the connection of the pyramids  with the civil engineers . Many people still believe that aliens were involved in this . But actually it was built by the people , hundreds of ancient Egyptians carried huge blocks of Lime stone and granite to Giza . the pyramid  of khufu remained the tallest structure on earth made by humans for over 3800 years . It was composed of 2.3 million stone blocks . The grate pyramid was originally covered with highly polished lime stone . The pyramid had inner passages going both up and down unlike the other pyramids . It is the only eight sided pyramid in Egypt .It aligned with the star's in the Orions belt and pointed to the pole star alpha draconis . it is the most accurately aligned constr