Concrete Mix Ratios – Cement, Sand, Aggregate and Water
网页by Anthony Hock. Concrete mix ratio is a vital topic in concrete mix design. The four basic ingredients for making concrete are: Portland cement, sand, aggregate (stone) and water. The strength of concrete mixture depends on the ratio in which these four ingredients are mixed. Concrete mix ratio of 1:3:3 – On mixing 1 part cement, 3 parts ...
Advantages and Disadvantages of Using Fly Ash In Concrete
网页The reduced permeability of concrete by using fly ash, also aids to keep aggressive composites on the surface where the damaging action is reduced. It is also highly resistant to attack by mild acid, water and sulfate. It effectively combines with alkalis from cement, which thereby prevents the destructive expansion.
Setting and Hardening of Cement - Civil Engineers Forum
网页2015年4月27日 · The term ‘ Setting ‘ is used to describe the stiffening of the cement paste. Setting of cement refers to changes of cement paste from a fluid to rigid state. Setting differs from Hardening of cement. The term ‘ Hardening’ refers to the gain of strength of a set cement paste, although during setting the cement paste acquires some strength.
Ferrocement – Advantages and Disadvantages of Ferrocement
网页What Is Ferrocement? Ferrocement was developed by an Italian architect named P.L. Nervi in 1940. Ferrocement is generally applied to a Portland cement and sand mixture applied over layers of expanded steel mesh and steel rebars …
Mixing Concrete Manually - Step by Step Guide - Civil Engineers …
网页It comes in different grades from I to V, but for construction purposes grade I suffices the purpose. The compressive strength of concrete is determined by the ratio of sand to cement. Concrete made from Portland cement and sand in the ratio of 1:3 will yield concrete having a compressive strength of over 3000 pounds per square inch (PSI.)
Cement Stabilization of Soil - Civil Engineers Forum
网页by Anthony Hock. Cement stabilization of soil is done by mixing pulverized soil and Portland cement with water and compacting the mix to attain a strong material. The material obtained by mixing soil and cement is known as soil-cement. The soil cement becomes a hard and durable structural material as the cement hydrates and develops strength.
Advantages and Disadvantages of Geopolymer Concrete - Civil …
网页Here are some of the top advantages of geopolymer concrete. 1. High Strength – it has a high compressive strength that showed higher compressive strength than that of ordinary concrete. It also has rapid strength gain and cures very quickly, making it an excellent option for quick builds. Geopolymer concrete has high tensile strength.
Fiberglass Reinforced Concrete - Uses, Advantages and …
网页Disadvantages of Fiberglass Reinforced Concrete. There is no ductility. Ductility is a solid material’s ability to deform under stress. The cost of GFRC is higher than traditional concrete. Due to the fiberglass being inside the concrete and the addition of additives and acrylic co-polymer the price is steeper. GFRC is difficult to self-mix.
Build Concrete Steps – Step by Step Guide - Civil Engineers Forum
网页The first step to building concrete steps is to calculate the floor to floor height and the length of the stairway. Exterior concrete steps are most comfortable with a 12″ tread and a riser height of 7.5”. 1) Height of one floor to the other = the total rise to the stairs. 2) Measure the horizontal distance the staircase will span.
Difference Between Cement and Concrete – Cement vs Concrete
网页2015年6月2日 · Cement is made of limestone and clay. Concrete is made of cement, rocks, sand and water. Cement is a binding agent or glue. Concrete is an actual construction material. Cement can only be mixed in small batches. Concrete can be mixed in large quantity. Cement is not strong and cannot be used in sidewalks and for walls.