The cement concrete is a mixture of cement, sand, pebbles or crushed rock and water, which, when placed in the skeleton of forms and allowed to cure, becomes hard like a stone. The cement concrete has attained the status of a major building material in all branches of modern construction because of the following reasons: (i) It can be readily [...]
Following are the five different types or Classification of cement concrete: 1. Water-Proofing Cement Concrete 2. Coloured Concrete 3. Light-Weight Concrete 4. No-Fines Concrete 5. Pre-Cast Concrete 6. Ready-Mix Concrete 7. Transit-Mix Concrete. Type # 1. Water-Proofing Cement Concrete: For certain types of works like water storage tanks, reservoirs, basement walls, roofs, swimming pools, sewage units, etc., the impermeability of [...]
Following tests are carried out in laboratory on the samples of aggregates to ascertain their some of the properties: The quality of aggregates plays a great role in the performance and long-term economy of the structure. The aggregates also bear the main stresses occurring in the R.C.C items like slab, beam, columns, etc. and resists wear from surface abrasion. The [...]
The concrete surfaces are kept wet for a certain period after placing of concrete so as to promote the hardening of cement. It consists of a control of temperature and of the moisture movement from and into the concrete. The term curing of concrete is used to indicate all such procedures and processes. Purposes of Curing: Following are the objects [...]
In this article we will discuss about:- 1. Joints in Concrete Structures 2. Guniting Process for Repairing Concrete Work 3. Formwork of Concrete 4. Quality Control of Concrete. Joints in Concrete Structures: Following are the two types of joints which are to be provided in concrete structures: (1) Construction joints (2) Expansion and contraction joints. (1) Construction Joints: The construction [...]
Cement concrete is an important construction material. Its importance is increasing every day. It is a composite material consisting of a binding material, which is essentially cement, inert mineral Filler, known as aggregates and water. Thus cement concrete can be prepared by mixing above ingredients in a fixed proportion. Green concrete is a plastic mass, which can be moulded into [...]