6'' thick sand filling, then 9'' thick plain cement concrete 1:4:8 [ ratio] then top layer of Plain cement concrete 1:1.5:3 mixed with concrete mixer. proper vibrator should be used. expansion joint should be after 2.5mts to 3mts alternatively of 12 mm wide and filled with the mixer of hot bitumen sand mixed.
by: m.s.chaudhary [civil engineer]
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Bleeding in concrete is sometimes referred as water gain. It is a particular form of segregation, in which some of the water from the concrete comes out to the surface of the concrete, being of the lowest specific gravity among all the ingredients of concrete. Bleeding is predominantly observed in a highly wet mix, badly proportioned and insufficiently mixed concrete. In thin members like roof slab or road slabs and when concrete is placed in sunny weather show excessive bleeding.Due to bleeding, water comes up and accumulates at the surface. Sometimes, along with this water, certain quantity of cement also comes to the surface. When the surface is worked up with the trowel, the aggregate goes down and the cement and water come up to the top surface. This formation of cement paste at the surface is known as "Laitance". In such a case, the top surface of slabs and pavements will not have good wearing quality. This laitance formed on roads produces dust in summer and mud in rainy season.
It is unknown who came up with the idea to pave roads with concrete. The first concrete paved road was built in 1909 and was Woodward Avenue in Detroit, Michigan.
The four-letter word you're looking for is "pave." It refers to the process of covering a road with a hard surface, typically using materials like asphalt or concrete to create a durable driving surface.
Road companies begin by surveying the area for stability. They clear the area, take measurements and begin digging. After laying the foundation, they then tar the road.
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http://simscience.org/cracks/advanced/concrete2.html A common mistake people make is to use the words cement and concrete interchangably. It is important to remember that cement is only a component of concrete and concrete is the structural material. The cement used in concrete is not used as a building material because it would be too expensive and not as strong as concrete. So when you see a parking garage, a driveway, a sidewalk or a road remember it is made of concrete, not cement. And, by the way, that funny looking truck is a concrete mixer, not a cement mixer! But, if cement is not concrete, then what is it? Cement is a general name for a material that binds other materials together. Yes, it is another name for glue. There are many materials which we would classify as cements and they are usually identified with certain uses, and can produce different types of "concrete". The type of cement used to make the riding surface of some of our roads (blacktop!) is called asphalt cement. It is a petroleum bi-product, and it binds rock into the road material we call asphaltic concrete.
Sandor Popovics has written: 'Mineral aggregates in highway engineering' -- subject(s): Aggregates (Building materials), Road materials 'Fundamentals of Portland cement concrete--a quantitative approach' -- subject(s): Concrete, Portland cement
Allen L. Cooley has written: 'Evaluation of recycled portland cement concrete pavements for base course and gravel cushion material' -- subject(s): Concrete Pavements, Pavement design, Pavements, Pavements, Concrete, Performance, Portland cement concrete, Recycled materials, Recycling, Waste products as road materials
Way to mean "method" is an abstract noun, like procedure. Way to mean a route is a concrete noun: a road, street, or path.
Bob the Builder's concrete mixer is named Dizzy. Dizzy is an orange, off-road cement mixer with a bright and enthusiastic personality. She is always ready to help Bob and the team with construction projects.
No.
A bituminous road is a road that has been covered with bitumen. If this is wrong, could I please have the correct answer. A bitumen road is different from tar road. bitumen is extracted from crude oil. since the bitumen is used as a binder this road is called bituminous road. if tar is used as a binder then it is called tar road.
Metalled roads are :1) made of bitumen of coal, cement or concrete 2) all wheather or season road Unmetalled roads are: 1)made in the absence of cement and concrete and sometimes made even of sand and laid as extended roads 2)limits its usage in rainy season
Less resistance on a smooth concrete road.
Broken roads shouldn't be tampered with as the government will take care of it. They can easily be fixed by putting more cement and balancing it so the concrete is nice and even.
Limestone is commonly used in construction as a building material, for example in the production of cement, concrete, and mortar. It is also used in agriculture to neutralize soil acidity and provide essential nutrients to crops. Limestone is used in the manufacturing of glass, as a flux in steel production, and in various chemical processes.