ConcreteP3B

==Unfortunately, the Haitian people had to endure one of the worst earthquakes in the history of the Caribbean. This disaster ruined almost everything that existed in this extremely poor country. Although these people are living in squalor, the Concrete Crazies are here to prevent any more troubles. We are doing everything we can to lend a helping hand. One of the biggest problems in Haiti was the way the buildings were made. The structures, made of concrete, were cheap and lacked a professional manufacturer. The concrete that was used consisted of too much water, giving the structures thin walls. The concrete was also exposed to seawater because of the location, ensuing in corrosion. We, the Concrete Crazies, use the perfect blend of ingredients, resulting in strong construction and wonderful protection.==

Charts
Gravel Aggregate

Brand Unit Unit Price ($) Quantity Cost ($) Amount used Amount left over Money wasted ($) Alabama Redrock 1500 lbs. $77 1 $77 820 680 $34.91 Alabama Sunset 1600 lbs. $81 1 $1600 820 780 $39.49 Arkansas White Rock 1600 lbs. $97 1 $1600 820 780 $39.49

http://www.cranelandscaping.com/gallery1.htm

We took the amount left over and multiplied it by the cost of the quantity used. Then we divided by the pounds per unit to find the money wasted.

Sand

Brand Unit Unit Price ($) Quantity Cost ($) Amount used Amount left over Money wasted ($) Sharp Sand 1000 lbs. $40 1 $40 520 lbs. 480 lbs. $19.20 Hercules 500 lbs $179 2 $358 520 lbs. 480 lbs. $343.68 Quikrete 50 lbs $3.62 11 $39.82 520 lbs. 30 lbs. $23.90

http://www.homedepot.com/Building-Materials/h_d1/N-5yc1vZ1xr5Zaqns/R-100672236/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053 http://www.lowes.com/pd_98545-286-115251_4294858248_4294937087?zipCode=07677&firstReferURL=http%3A%2F%2Fwww.lowes.com%2Fpd_98545-286-115251_4294858248_4294937087%3FproductId%3D3048145%26pl%3D1%26currentURL%3D%2Fpl_Concrete%252B_4294858248_4294937087_%3FnewSearch%3Dtrue%24ddkey%3Dhttp%3ACategoryDisplay&catalogId=10051&catalogId=10051&productId=3048145&pl=1&findStoreErrorURL=StoreLocatorDisplayView&selectedLocalStoreBeanArray=%5Bcom.lowes.commerce.storelocator.beans.LocatorStoreBean%404bf366b6%2C+com.lowes.commerce.storelocator.beans.LocatorStoreBean%4054cee6b2%2C+com.lowes.commerce.storelocator.beans.LocatorStoreBean%4054a866b2%2C+com.lowes.commerce.storelocator.beans.LocatorStoreBean%401981a6b0%2C+com.lowes.commerce.storelocator.beans.LocatorStoreBean%406a83a7d1%5D&currentURL=%2Fpl_Concrete%2B_4294858248_4294937087_%3FnewSearch%3Dtrue%24ddkey%3Dhttp%3ACategoryDisplay&Ntt=&URL=TopCategoriesDisplayView&langId=-1&langId=-1&storeId=10151&storeId=10151

Cement

Brand Unit Unit Price ($) Quantity Cost ($) Amount used Amount left over Money Wasted ($) Rutland 25 lbs. $52.99 9 $476.91 220 lbs. 5 lbs. $95.39 Quikrete 80 lbs. $3.80 3 $11.40 220 lbs. 20 lbs. $2.95 Sakrete 80 lbs $201.18 3 $603.54 220 lbs 20 lbs. $150.89

http://www.idealtruevalue.com/servlet/the-67350/Detail http://www.lowes.com/pd_10385-286-110180_4294858247_4294937087?productId=3006075&pl=1&currentURL=/pl_Concrete%2BMix_4294858247_4294937087_?newSearch=true$ddkey=http:TopCategoriesDisplay http://underbid.com/product/328-32020/RL-601/Rutland_25_lbs_Bag_Castable_Cement_-_Mix_With_Water_Fire_Clay_2200_degree.html?ref=base

Calculations

__Ingredients__ Typically, a mix is about 10 to 15 percent cement, 60 to 75 percent aggregate and 15 to 20 percent water. Entrained air in many concrete mixes may also take up another 5 to 8 percent.

2 ¾ parts stone and gravel aggregate 2 ½ parts sand 1 part cement ½ part water

Our Concrete will be made of 11% (220 lbs) Portland Cement, 41% (820 lbs) gravel (coarse aggregate), 26% (520 lbs) sand, 16% (320 lbs) water, and 6% (120 lbs) air. We will mix all the these ingredients together, using a power mixer. When the cement and the water harden, this process is called hydration. During hydration, a node (area of swelling), forms on each cement particle. The particles will expand, hardening the concrete.

11 (percent Portland Cement) /100 (entire mixture) = x (amount of ingredient out of 1 ton) /2000 lbs concrete

100x = 22,000

x = 220 lbs Portland Cement

820 lbs gravel

520 lbs sand

320 lbs water

120 lbs air

After we thoroughly researched different types of gravel aggregate, we decided to use Alabama Redrock. We came to this conclusion because this type of gravel permits the least amount of money wasted.

The members of the Concrete Crazies have decided to use sharp sand to complete the building process. Like the gravel, it makes the most sense to use this sand because it results in the least amount of money waster. This is the most efficient path to choose.

We have decided to use Quikrete cement to create our strong buildings. Even though we are using multiple bags, it still results in the most efficient because we have a small amount of money wasted.

sources for josh: http://www.associatedcontent.com/article/529545/mixing_your_own_concrete_the_recipe.html

Sources for Aria: http://www.ehow.com/how_16407_mix-concrete-with.html

Sources for Rachel: http://www.cement.org/basics/concretebasics_concretebasics.asp