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Concrete and Cement

Buildings today cannot go without concrete and cement. Cement mixed with water, reinforcing steel, sand and gravel, binds all of these components together. When dried, it becomes hard as a rock, which is perfect for buildings and infrastructure.

3,467 Questions

What is the cost per cubic yard of concrete in Kansas?

Well, isn't that a lovely question! The cost of concrete can vary depending on the supplier and location, but on average, it can range from $100 to $150 per cubic yard in Kansas. Remember, it's always a good idea to get quotes from different suppliers to find the best price for your project. Happy painting!

What is Fcu and Fy for concrete?

Ah, let's talk about FCU and FY for concrete, friend. FCU is the compressive strength of concrete, like the mighty foundation of a happy little tree. And FY is the yield strength of reinforcement, providing support and strength just like the branches of a strong and resilient tree. Together, they work in harmony to create a sturdy structure that can withstand the test of time.

What elements combine to make glass and concrete?

Common glass is made from sand, SiO2, Na2O and CaO. Concrete is a mixture of rocks (aggregate), sand, and water.

What are advantages and disadvantages of in situ Concrete?

One advantage of in situ concrete is its versatility, as it can be molded and shaped to fit any design requirements. Additionally, in situ concrete provides a seamless finish without joints, reducing the risk of water leakage and enhancing structural integrity. However, a disadvantage is the longer construction time required for in situ concrete compared to precast concrete, as it needs time to cure on-site. Additionally, in situ concrete may require more skilled labor and expertise for proper installation and finishing.

A swimming pool 25m by 10m has a concrete border all round Find the area of the concrete border if it is 2.5m wide at the sides and 5m at the ends?

To find the area of the concrete border, we first calculate the total area of the pool including the border and then subtract the area of the pool itself. The total length of the pool with the border is 30m (25m + 2.5m on each side), and the total width is 15m (10m + 5m on each end). Therefore, the total area of the pool with the border is 30m x 15m = 450 square meters. The area of the pool itself is 25m x 10m = 250 square meters. Thus, the area of the concrete border is 450 square meters - 250 square meters = 200 square meters.

What was the cost per cubic yard of concrete in 1970?

Oh honey, you're really taking me back! In 1970, the average cost per cubic yard of concrete was around $35. But you know, prices have probably changed more times than I've changed hairstyles since then. So, you might want to double-check with someone more up-to-date if you're planning on building a time machine back to the '70s.

How much concrete is needed to fill an area 24ft x 12 ft?

You need to specify how deep the area is to answer the question; this is a volume problem. Please ask again

How much concrete you need for slab 10 ft by 31 ft 5.5 inches thick?

You would need 5.26 cubic yards of concrete based on the concrete calculator found at the related link below.

5.5 deep is hard to guarantee in every spot of the slab, so order extra. You would really want between 5.5 and 6 cubic yards. You don't ever want to be short.

If this is an exterior slab that would be exposed to freezing conditions, make sure to order air entrainment and 4,000 psi concrete and don't add an more than 1 gallon of water per cubic yard of concrete. If you want it to be more loose, then ask for a low range water reducer in the mix.

How much silica for 42pounds Portland cement?

For Portland cement, the typical silica content is around 20-25%. To calculate the amount of silica for 42 pounds of Portland cement, you would take 20-25% of that weight. This means you would need approximately 8.4 to 10.5 pounds of silica.

Can concrete explode?

Concrete itself does not explode, but it can experience explosive spalling or fragmentation under certain conditions, such as exposure to extreme heat or rapid temperature changes. When subjected to intense heat, trapped moisture within the concrete can turn to steam, causing pressure buildup that may lead to cracking or pieces breaking off. Additionally, certain chemical reactions, like those involving expansive agents or improper mixing, can create explosive-like failures in concrete structures. However, these scenarios are generally not classified as explosions in the traditional sense.

How many bag of cement and sand per square meter at 5 inches thick concrete slab?

Well, darling, if you want a concrete slab that's 5 inches thick, you'll need about 0.012 cubic meters of cement and 0.06 cubic meters of sand per square meter. Just make sure you mix it well and pour it like a boss. Good luck with your project, sugar!

What is the cement content for M7.5 grade concrete?

  • For M7.5 concrete, the common mix ratio is 1:4:8. This means:1 part cement 4 parts fine aggregates (sand)8 parts coarse aggregates. These ratio is by volume.

How much water required per m3 concrete?

The water required for 1 m3 of the nominal mix of m20 concrete is about 240 liters, according to math calculations such as 403 × 0.55 = 220 liters. The water concrete ratio is about 0.55 for a normal mix of M20 concrete, so the amount of water needed for a 50kg bag of cement is about 28 liters. Sai isha clinic is also member of Indian association of cardiothoracic surgery – IACTS, European association of cardiothoracic surgery (EACTS) and Society of Pediatric and Congenital heart surgeons (SPCHS). Neurologist Chennai areas of interest are congenital heart surgery (from newborn to adults), thoracic surgery, coronary artery bypass grafting surgery, minimally invasive cardio-thoracic surgery, video assisted thoracic surgery.

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Can cement bricks and concrete bricks be used together in the same wall construction?

I think that they can, if they are both used correctly, the cement and concrete bricks can be put together in the same wall construction. :)

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I think you need to define some words. Concrete is made by mixing portland cement, water, and sand/crushed stone. There ARE no "cement bricks" Traditional bricks are made by mixing clay, shale, and water, and baking them in a kiln (oven) at high temperatures. And yes, regular clay brick and concrete brick/ block are frequently both used in a wall. Together.

How many 5 inch blocks will one bag of cement lay?

All things being equal; a bag of cement would lay 100 pieces of 5 inch blocks.

How many yards of concrete to cover a 6'x8'x6' patio?

I'm guessing it's a 6 foot by 8 foot patio (but 6 inches, not feet deep). {Note that typically something like a patio may only use 4 inch depth of concrete}. In the case of 6 inches, it should be specified as 6'x8'x6". A yard of concrete has a volume of 1 cubic yard, which is 3x3x3 = 27 cubic feet.

For the patio depth of 6 inches converts to 0.5 feet, so we have 6 ft x 8 ft x 0.5 ft = 24 ft³. Take 24/27 = 8/9 or 0.8889 cubic yards [0.8889 yards of concrete].

How much sand is in 1 cubic yard of concrete using 6 portlands per cubic yd?

Where I am, concrete would be made in the proportions of 1 of cement, 2 of sand, and 4 of gravel. River gravel, by definition is stronger material than the fines and sand, for it has better withstood the travel down the river. Thus river gravel will always make a stronger concrete that material quarried from a hillside, even if nominally the same rock type.

The cement should cover every material surface inside the concrete. That is why too much sand (with its proportionately higher surface to volume ratio) will weaken the concrete.

The setting reaction is a complex set of calcium carbonate, sulphate, and silicate reactions which take considerable time to form the crystals which give the strength to the concrete. And, of course, any water surplus to the crystal formation will leave (minute) voids that will give a weaker concrete.

So for concrete constructions in which strength is vital (bridges, slabs) a long drying period is preferred, and the concrete should be kept moist for as long as possible.