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Is the silica sand good for concrete mixed and can you help me about chemical ingredient that help increase concrete durability and strength?
I will pass on the silica sand item and the strength increases. Try the portland cement association site.
As for durability, the most success I know of has been the use of air entraining agents in concrete. My experience is in roads and bridges. A 6% air entrainment (one was called Darex) dramatically improves the ability of concrete to withstand freeze-thaw cycles. Test specimens that I saw had been put through thousands of cycles. The non-air sample was pitted, spalled, pockmarked while the air mix looked pristine. The amont of air entraining agent is critical because it reduces the strength of the mixture (solid sand,and stone particles have been replaced by microscopic air voids).
There are hundreds of ways to improve strength and early development of strength. The biggest effect is overuse of the chemical h2o. Also, in the long run air entrainment maintains strength longer because of the durability increase.
What else can I help you with?
Do they have lime in concrete?
Yes, lime is one of the ingredients in concrete mixes. It is used to improve workability and reduce the amount of water needed in the mix, which ultimately helps increase the strength and durability of the concrete.
What are the disadvantages of using calcium chloride in concrete?
One disadvantage of using calcium chloride in concrete is that it can lead to corrosion of reinforcing steel, which weakens the structure over time. Additionally, it can increase the rate of drying, potentially causing cracking and reducing the overall durability of the concrete.
What is pozzolanna?
Pozzolana is a type of volcanic ash or material that can be mixed with lime to create a cement-like substance called pozzolanic cement. This material has been used in construction for thousands of years due to its ability to increase the strength and durability of concrete when mixed with lime. It is commonly used in various construction projects to improve the performance of concrete structures.
What are water reducers used for?
Water reducers are used in concrete mixtures to improve workability and reduce the amount of water needed for a given slump. They can help increase the strength and durability of concrete while also reducing the risk of cracking and improving the overall finish of the surface.
Is hydrated lime concrete?
No it is not. Hydrated lime and concrete are quite different. hydrated lime is an addative similar to cement and used in concrete to improve the strength. it can also be added to soil to improve stability etc. typically concrete is a mixture containing different % of rock, cement/lime, fly ash, water. lime is a cheaper then cement however not aas effective and takes longer to harden. -civil engineering student
Do they have lime in concrete?
Yes, lime is one of the ingredients in concrete mixes. It is used to improve workability and reduce the amount of water needed in the mix, which ultimately helps increase the strength and durability of the concrete.
What is the purpose of wire mesh in concrete?
Wire mesh is used in concrete to provide reinforcement and increase the strength of the concrete structure. It helps to prevent cracking and improve the overall durability of the concrete.
How can I effectively improve the appearance and durability of my driveway through concrete grinding?
To effectively improve the appearance and durability of your driveway through concrete grinding, you can hire a professional contractor to grind down the surface of the concrete to remove imperfections and create a smooth finish. This process can help to enhance the overall look of your driveway and increase its longevity by reducing the risk of cracks and damage. Additionally, applying a sealant after grinding can further protect the concrete from stains and weathering, improving its durability over time.
Why suitable coarse and fine aggregate used in the concrete ingredient?
aggregates are used to concrete for following purposes: 1.if totally binding materials like cement is used in concrete, the cost of concrete will be high which is uneconomical. 2.to prevent high shrinkage of concrete mix fine aggregates are used. 3.to increase the volume of concrete mix aggregates are used.
What are the disadvantages of using calcium chloride in concrete?
One disadvantage of using calcium chloride in concrete is that it can lead to corrosion of reinforcing steel, which weakens the structure over time. Additionally, it can increase the rate of drying, potentially causing cracking and reducing the overall durability of the concrete.
What is pozzolanna?
Pozzolana is a type of volcanic ash or material that can be mixed with lime to create a cement-like substance called pozzolanic cement. This material has been used in construction for thousands of years due to its ability to increase the strength and durability of concrete when mixed with lime. It is commonly used in various construction projects to improve the performance of concrete structures.
Disadvantages of mineral fillers in concrete?
Mineral fillers in concrete can reduce workability, increase water demand, and potentially decrease the durability of the concrete by increasing the risk of cracking and reducing resistance to freeze-thaw cycles. Additionally, mineral fillers may not provide significant strength improvement to the concrete mixture.
What name are concrete admixture?
Mineral admixture are those which are mixed with concrete ingredients and spread through out the body of concrete to favourably modify the properties of concrete . the commonly used mineral admixture are1. Fly ash2. Silica fume3. Rice Husk ash4. matakaoline
How is microfiber used as a reinforcement in concrete structures?
Microfiber is used as a reinforcement in concrete structures to improve their strength and durability. The small fibers are added to the concrete mix to help control cracking and increase the overall toughness of the structure. This reinforcement helps to enhance the performance of the concrete and make it more resistant to various stresses and strains.
What is the effect of adding marble powder on durability of concrete?
Consider what marble powder is. It is basically calcite, which is an already common component of concrete. Adding more would be to increase the ratio of calcium carbonate to other plasticizing materials. In effect, it would make the concrete more stony and brittle.
What is the difference between concrete grade C35 and C35A?
The main difference between concrete grade C35 and C35A lies in their composition. C35 concrete is a standard concrete mix with a minimum strength of 35 megapascals (MPa), while C35A concrete is a special mix that includes air-entraining agents to improve workability and durability. The inclusion of air-entraining agents in C35A helps to increase the concrete's resistance to freeze-thaw cycles and reduce the risk of cracking. Overall, C35A is more suitable for applications where improved durability and workability are required.
How can I ensure the durability and stability of a concrete slab during construction?
To ensure the durability and stability of a concrete slab during construction, follow these steps: Properly prepare the site by compacting the soil and ensuring proper drainage. Use high-quality concrete mix with the right proportions of cement, water, and aggregates. Reinforce the slab with steel rebar or wire mesh to increase strength. Adequately cure the concrete by keeping it moist and protected from extreme temperatures. Control the placement and finishing of the concrete to minimize cracks and ensure a smooth surface.
