well concrete mix is a 1/3 gravel , 1/3 sand and 1/3 portland cement . I hope this helps.
1 94-pound bag of cement is approximately equal to 1 cubic foot.
equal parts to mix
6 bags.... depending on the mix ratio
Stressed concrete beams have a variety of uses in civil engineering. They hold up roofs and bridges among other things. -These concrete beams are not just concrete, they have steel cables inside that create a tension to make the beam stronger.
2300lm Comment I think you mean lumens, not lumen's. No that answer is wrong Watts (energy usage) / Lumens (light output) 25 is equal to 200 35 is equal to 325 40 is equal to 450 60 is equal to 800 75 is equal to 1100 100 is equal to 1600 125 is equal to 2000 150 is equal to 2600 36 watts would be about 350 Lumens
1 94-pound bag of cement is approximately equal to 1 cubic foot.
Cement content varies on concrete type, but is typically 400kg per cubic metre. According to the manufacturer, Portland Cement (which is what 99.9% of all cement actually is) has a density of 1505kg/cubic meter.
One cubic meter of concrete is equal to 1.308 cubic yards of concrete. If there are 5 1/2 bags of cement in 1 cubic yard of concrete, there would be 7.2 bags in 1 cubic meter of concrete. These are the 94 pound bags of portland cement or roughly 40kg bags so figure 8 bags total. Some will be left over
1 cubic meter of gravel equals to 1400kg or 1.4 tons.
Knowing that 1 cubic foot is pretty much equal to 100 pounds or 0.05 ton, 1 ton of gravel is around 20 cubic feet.
14 .
If you are referring to "concrete" it is measured in square yards which is sometimes referred to as a ton. If you mean the premixed "Sac-rete" you buy at the local building supply house 22.22 90lb bags would equal a ton by dry weight while by volume it would take 40.55 bags to equal a square yard. "Cement" in a dry powder form is mixed with other aggregates such as sand and gravel or rock and then water is added to make materials such as mortar, stucco or concrete.
27 cu ft
Estimate based on dry loose gravel containing 1/4" to 2" stones 30000lbs of gravel = 10.58201 cubic yards 30000 / 2835 = 10.58201 estimate 2835 pounds per cubic yard
Each tonne of portland cement produced produces about a tonne of CO2, about half of which is produced when calcium carbonate (limestone) is heated to 1400` and turned into calcium oxide. Mining, processing and transport accounts for the other half.So no, cement is not good for the environment.Geopolymer cement,the type used by the Romans, is a lot more environmentally friendly. When made, It is only heated to 700`, and this produces only a tenth of the CO2.It is the equal of portland cement in strength and longievity,and very fast cure times are possible when needed.It costs around the same to make. The Romans used a naturally occurring geopolymer (accelerant) which is only found in the Bay of Naples, but synthetic geopolymers have been around since the 1970s.Until now, there hasn't been any incentive to switch to this,but hopefully carbon trading will make it viable.Cement production makes up 5% of our carbon emissions(about the same as aviation) and doing this will make a real difference.
equal parts to mix
assuming kilos means kilograms. In that case, there is no definite answer. Kilograms are units of mass and ite dpends on the consistency (or density) of the cement mixture. A cubic meter of cement can have various densities.