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What is C-40 grade of concrete used for?
Constructions that require the concrete to withstand 40 Newtons of compressive force.
What was the weight of concrete in the goldengate bridge?
1,900 was used.
Advantages use prestressed concrete in constructions?
1.Higher spans can be obtained by reducing no.of column supports. 2.Concrete sections can be reduced. 3.Rebar and concrete can be economized. 4.Used for precast concrete members particularly for bridges. Pandu R Reddy.Bijjam M.Tech(structures)
Why it is called a biaxial voided slab?
Voided biaxial slabs are reinforced concrete slabs in which voids reduce the amount of concrete.While concrete has been used for thousands of years, the use of reinforced concrete is a relatively recent invention, usually attributed to Joseph-Louis Lambot in 1848. Joseph Monier, a French gardener, patented a design for reinforced garden tubs in 1868, and later patented reinforced concrete beams and posts for railway and road guardrails.The main obstacle with concrete constructions, in case of horizontal slabs, is the high weight, which limits the span. For this reason major developments of reinforced concrete have focused on enhancing the span, either by reducing the weight or overcoming concrete's natural weakness in tension
How much concrete was used to build the millau bridge?
The volume of concrete used to build the Millau bridge is 85,000 m3 (cubic meters). The weight of this volume of concrete is 206,000 metric tons.
Would a food scale be a good way to measure the weight of a concrete block?
No. The weight of the concrete block is likely to exceed the range over which the food scale is designed to be used.
Why fibers are used in concrete?
to increase the strength of the material and decrease the weight of the material
What is weight of 8mm 10mm 12mm 16mm 20mm in kg?
The weights of steel rods with diameters of 8mm, 10mm, 12mm, 16mm, and 20mm will vary based on the specific material used. As an example, the weight of a 1-meter long mild steel rod with a diameter of 8mm would be approximately 0.39 kg, 0.62 kg for 10mm, 0.89 kg for 12mm, 1.58 kg for 16mm, and 2.47 kg for 20mm. These are approximate values and can vary depending on the exact composition of the steel.
What does a 8x10x16 block weight?
The weight of an 8x10x16 concrete block typically ranges from 40 to 60 pounds, depending on the concrete density and any additional materials used in its composition. Standard concrete blocks, often referred to as CMUs (concrete masonry units), are made of a mixture of cement, water, and aggregates, which contribute to their weight. For a precise weight, it's best to check the specifications from the manufacturer.
What is the weight of a concrete mixer carrying 9 yards of concrete?
The weight of a concrete mixer carrying 9 yards of concrete can vary depending on the specific density of the concrete used, but on average, concrete weighs about 4,000 pounds per cubic yard. Therefore, 9 yards of concrete would weigh approximately 36,000 pounds. Additionally, the weight of the concrete mixer itself typically ranges from 20,000 to 30,000 pounds, depending on its size and design. Thus, the total weight when fully loaded would be around 56,000 to 66,000 pounds.
What is M20 concrete grade?
M20 refers to the grade of the concrete generally used in construction purpose. Here, M refers to mix & number 20 refers to the characteristic strength of concrete. the proportions of this grade is (1:1 1/2: 3). Along with this there are some more grades used in constructions i.e., M5, M7.5, M10, M15, M25, M30................. M80
What is Roman concrete?
The Romans in 127 AD used crushed pumice for aggregates in cement (light weight concrete) for walls of Pantheon in Rome
