Building Maintance and social knowledge

Fifth Generation 5G will provide speed work on the internet as well as  provide reliable communication.5G means fifth generation. Most of the people are using 3G/4G network today.If 5G has lot of advantage in the world then there are some disadvantages:- Advantage of 5G :- Due to 5G, there will be a lot of help in medical treatment. Increase accuracy while talking on social networking.example watch video with no delay or glitches. Increase speed by 10 times in comparison of 4G, which will make easy to download the data in shortest time. Increase the accuracy of GPS. This will also help us in education,we can offer online classes from other countries. Possibility of visualisation of universe,planets and galaxies is possible. Natural disaster can be detected speedly. Easy to control your personal computer with cell phone. We can increase security and privacy. We can use 5G technology in weapons. Disadvantage of 5G :- Reduced th...

Numbers Number system is the most important tools in the world used to count,labeling,sequencing and coding and measuring purpose. Types of Number system Natural Number :-   Numbers that can be counted are called Natural numbers like 1,2,3,4,5,6................                                                                                                 Whole Number :-   Numbers that can be counted together with zero are called whole number. Example:-0,1,2,3,4,5..............                                                                  ...

Concrete  After   water , concrete is the most used thing in the world. The mixer of cement ,water and coarse aggregate is called   Concrete . Properties of concrete:- Concrete is divided into two stages:- Plastic stage Hardened stage Plastic stage   :-The time duration when concrete begins to take their original shape after the removal of   stress or strain . At the time of plastic stage concrete should have:- Good   workability Freedom from   segregation freedom from   bleeding  2 .Hardened stage :-The time duration when concrete fails to take their original shape after the removal of   stress or strain . Properties of concrete in hardened stage:- Strength Durability Impermeability Dimensional change Strength :-        (1) Compressive strength :-         1.For road & Bridge -20 to 40 N/mm2.        2. 20 N...

CEMENT Cement is a binding material mixed with water and aggregate to form concrete or mortar.The mixture of cement and water is called   Cement paste ..The mixture of cement,water and fine aggregate is called   mortar .The mixture of cement,water,fine and coarse aggregate is called   Concrete   or the mortar fill the voids in the presence of coarse aggregate is called   Concrete . Testing of Cement :- OPC & PPC Field test Laboratory test 1. Field test:- Take a look at cement paste, there should not be visible lump. Colour of cement should normally be greenish grey. It should give a cool feeling,when we put hand into the cement bag. Take a pinch of cement bag, it should give a smooth feeling. feel not oily when touched. Take a handful of cement and throw it on a bucket of full of water, the particle should float for some times before they sink. 2.Laboratory test:- Test of OPC: 33,43 and 53 grade  Ordinary Portland Cement- ...