Design the concrete mix according to the following conditions: Design environment Pavement, subjected to freezing Required design strength =21 MPa Slab thickness=300 mm Statistical data indicate a standard deviation of compressive strength of 1.7 MPa is expected (more than 30 samples) Only air entrainer is allowed Available materials: Air entertainer: Manufacturer specification is 9.5 ML /1% air/100kg cement Coarse aggregate: 50 mm nominal maximum size, crushed stone Bulk volume oven-dry specific gravity=2.57, absorption=2.8%, oven-dry rodded density=1922 kg/m³ Moisture content3D1% Fine aggregate: Natural sand Bulk oven-dry specific gravity=2.54, absorption=3.4% Moisture content= 4.5% Fineness modulus=2.60 Cement: Type I, relative density=3.1

Q: What is the minimum strength that concrete must reach prior to freezing so that the overall strength…

A: The minimum strength that concrete mus overall strength gain is not affected:

Q: Design the concrete mix according to the following conditions: Design Environment • Concrete slab o…

A: 1) Concrete slab : Subjected to freeze and thaw, Required design strength (fs') = 21 MPa ,Slab…

Q: A trial concrete mix is to be prepared for a garage floor which is subjected to freezing. and…

A:

Q: The name of the test used to measure the consistency and workability of fresh concrete is called the…

A: The name of the test used to measure the consistency and workability of fresh concrete is called the…

Q: Design concrete mix to satisfy the requirements for concrete foundation subjected to ground water…

A:

Q: Using the following data for n unreinforced Portland Cement Concrete pool deck: Design strength f'c=…

A: (a) The formula to calculate the compressive strength is given by, fm=fc+1.65σ              ...1…

Q: Concrete is required for a building foundation that is placed on a soil with high chloride content.…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: To evaluate the effect of a certain admixture on the flexure strength of concrete, two mixes were…

A: a) The formula of modulus of rupture of the beam is given by,

Hydrogen Energy

Energy is a quantity that cannot be defined, its existence can only be felt. In simple language, if a system possesses energy, it can do a specific kind of work. There are many forms of energy sources which people can use to obtain work. Solar energy, tidal energy, hydroelectric energy, geothermal energy, wind energy are some of the renewable energy sources which are primarily used for the production of electricity.