TH11946U - The process of producing self-compacting concrete by mixing rice husk ash from thermal power plants and limestone powder. - Google Patents

Abstract

Revised Invention Summary 7/06/2016. The process for producing self-compacting concrete using a mixture of rice husk ash from a thermal power plant and limestone powder involves the following steps: The concrete mixture is prepared using a mixer at a specific ratio, starting from step 1: Adding all river sand to the mixer and mixing for 3 minutes. Step 2: Adding the total amount of rice husk ash to the mixing drum and mixing for 4 minutes. Step 3: Adding the total amount of cement and limestone powder and mixing for 3 minutes. Step 4: Adding the total amount of crushed limestone and mixing for 4 minutes. Step 5: Adding the total amount of water and mixing for 3 minutes. Step 6: Adding the total amount of a superplasticizer (G) and mixing for 7 minutes. The total mixing time is 24 minutes, resulting in self-compacting concrete mixed with rice husk ash and limestone powder. ---------------------------------------------------------------------------------------------- Revised Invention Summary 7/06/2016 The process for producing self-compacting concrete using a mixture of rice husk ash from a thermal power plant and limestone powder involves the following steps: The concrete mixture is prepared using a mixer at a specific ratio, starting from step 1: Add all the river sand to the mixer and run it for 3 minutes. Step 2: Add the total amount of rice husk ash to the mixing drum and mix for 4 minutes. Step 3: Add the total amount of cement and limestone powder and mix for 3 minutes. Step 4: Add the total amount of crushed limestone and mix for 4 minutes. Step 5: Add the total amount of water and mix for 3 minutes. Step 6: Add the total amount of a superplasticizer (G) and mix for 7 minutes. The total mixing time is 24 minutes, resulting in self-compacting concrete mixed with rice husk ash and limestone powder. ------------------------------------------------------------------------------- Revised 7/6/59 The process for producing self-compacting concrete mixed with rice husk ash from thermal power plants and limestone powder involves the following steps: The concrete mixture is prepared using a mixer at a specific ratio, starting from step 1: Add all the river sand to the mixer and run it for 3 minutes. Step 2: Add the total amount of rice husk ash to the mixing drum and mix for 4 minutes. Step 3: Add the total amount of cement and limestone powder and mix for 3 minutes. Step 4: Add the total amount of crushed limestone and mix for 4 minutes. Step 5: Add the total amount of water and mix for 3 minutes. Step 6: Add the total amount of a superplasticizer (G) and mix for 7 minutes. The total mixing time is 24 minutes, resulting in self-compacting concrete mixed with rice husk ash and limestone powder. .................................................................................................................................................. The process for producing self-compacting concrete using rice husk ash from a thermal power plant and limestone powder involves the following steps: First, mix one of six possible ratios of rice husk ash concrete using a mixer. The mixing process begins as follows: Step 1: Add all the river sand to the mixer. The mixer, with a cylindrical drum (100 cm diameter, 50 cm high), is operated at 90 revolutions per minute for 3 minutes. Step 2: After 3 minutes, add the total amount of rice husk ash to the mixer and continue mixing for 4 minutes. Step 3: After 7 minutes, add the total amount of cement and limestone powder and continue mixing for 3 minutes. Step 4: After 10 minutes, add the total amount of crushed limestone and continue mixing for 4 minutes. Step 5: After 14 minutes, add the total amount of water and continue mixing for 3 minutes. Finally, at 17 minutes, add the total amount of type G super-reducing admixture. Then mix for another 7 minutes, for a total mixing time of 24 minutes, resulting in self-compacting concrete mixed with rice husk ash and limestone powder.

Claims (4)

Revised 7/06/2016 1. The process for producing self-compacting concrete using a mixture of rice husk ash from a thermal power plant and limestone powder involves the following steps: a.1. Place all river sand into the mixer and operate the mixer, which has a cylindrical mixing drum with a diameter of 100 centimeters and a height of 50 centimeters, at a speed of 90 revolutions per minute for 3 minutes. b. After 3 minutes, add the total amount of rice husk ash to the mixing drum and continue mixing for 4 minutes. c. After 7 minutes, add the total amount of cement and limestone powder and continue mixing for 3 minutes. d. After 10 minutes, add the total amount of limestone and continue mixing for 4 minutes. e. After 14 minutes, add the total amount of water and continue mixing for 3 minutes. f. After 17 minutes, add the total amount of a superplasticizer (G). Then, mixing continued for 7 minutes, for a total mixing time of 24 minutes, resulting in self-compacting concrete mixed with rice husk ash. 2. The process for producing self-compacting concrete mixed with rice husk ash from a thermal power plant and limestone powder, according to claim 1, where the rice husk ash has a chemical composition by weight consisting of 0.35% aluminum oxide (Al2O3), 93.10% silicon dioxide (SiO2), 1.63% potassium oxide (K2O), 1.32% calcium oxide (CaO), 0.03% titanium dioxide (TiO2), and 0.24% iron oxide (Fe2O3), with a weight loss due to combustion of 1.91%, while having physical properties including an average size of 269.6 micrometers and a specific surface area of 472 square centimeters per gram. Specific gravity equals 2.21, moisture content equals 3.12. 3. Process for producing self-compacting concrete mixed with rice husk ash from thermal power plants and limestone powder according to claim 1, where the limestone powder has a chemical composition by weight consisting of aluminum oxide (Al2O3) 9.69%, silicon dioxide (SiO2) 17.70%, potassium oxide (K2O) 0.46%, calcium oxide (CaO) 47.92%, titanium dioxide (TiO2) 0.56%, iron oxide (Fe2O3) 3.27%, and has a weight loss due to combustion of 13.10%, while having physical properties including an average size of 15.36 micrometers, a specific surface area of 12,950 square centimeters per gram, a specific gravity of 2.66, and a moisture content of 2.43. 4. Self-compacting concrete. According to claims 1, 2, or 3, where the concrete mix formula is: Mix Volume (kilograms per 1 cubic meter of concrete) Formula Name Cement Fine Aggregate Coarse Aggregate Percentage River Sand Rice Husk Ash Limestone Powder Limestone Water Reducing Agent Formula 1 551 814 35 43 710 2.10 ------------------------------------- Revised 7/6/59 1. The process for producing self-compacting concrete mixed with rice husk ash from a thermal power plant and limestone powder involves the following steps: a. Put all the river sand into the mixer and start the mixer, which has a cylindrical mixing tank with a diameter of 100 centimeters and a height of 50 centimeters, at a speed of 90 revolutions per minute for 3 minutes. b. After 3 minutes, add the total amount of rice husk ash to the mixing tank and continue mixing for 4 minutes. c. After 7 minutes, add the total amount of cement and limestone powder and continue mixing for 3 minutes. d. After 10 minutes, add the total amount of crushed limestone. Then mix for 4 minutes. (J) After 14 minutes, add the total amount of water and mix for 3 minutes. (F) After 17 minutes, add the total amount of superplasticizer (G) and mix for 7 minutes. The total mixing time is 24 minutes, resulting in self-compacting concrete mixed with rice husk ash. 2. The process for producing self-compacting concrete mixed with rice husk ash from a thermal power plant and limestone powder, according to claim 1, where the rice husk ash has a chemical composition by weight consisting of: aluminum oxide (Al2O3) 0.35%, silicon dioxide (SiO2) 93.10%, potassium oxide (K2O) 1.63%, calcium oxide (CaO) 1.32%, titanium dioxide (TiO2) 0.03%, iron oxide (Fe2O3) 0.24%, and has a weight loss due to combustion of 1.91%, while having physical properties consisting of: The average size is 269.6 micrometers, the specific surface area is 472 square centimeters per gram, the specific gravity is 2.21, and the moisture content is 3.12. 3. The process for producing self-compacting concrete mixed with rice husk ash from a thermal power plant and limestone powder, as per claim 1, where the limestone powder has a chemical composition by weight consisting of 9.69% aluminum (Al2O3), 17.70% silicon dioxide (SiO2), 0.46% potassium oxide (K2O), 47.92% calcium oxide (CaO), 0.56% titanium dioxide (TiO2), and 3.27% iron oxide (Fe2O3), with a weight loss due to combustion of 13.10%, while having physical properties including an average size of 15.36 micrometers and a specific surface area of 12,950 square centimeters per gram. Specific gravity equals 2.66. Moisture content equals 2.43. 4. Self-compacting concrete according to claim 1, 2 or 3 where the concrete mix formula is: Mix ratio (kilograms per 1 cubic meter of concrete) Formula Name Cement Fine aggregate Coarse aggregate Percentage River sand Rice husk ash Limestone powder Stone Water reducing agent Formula 1 551 814 35 43 710 2.10 .................................................................................................................................................................................... 1. The process for producing self-compacting concrete mixed with rice husk ash from a thermal power plant and limestone powder involves the following steps: a. Step 1: Place all river sand into the mixer and operate the cylindrical mixer (100 cm diameter, 50 cm high) at 90 revolutions per minute for 3 minutes. b. Step 2: After 3 minutes, add the total amount of rice husk ash to the mixer and continue mixing for 4 minutes. c. Step 3: After 7 minutes, add the total amount of cement and limestone powder and continue mixing for 3 minutes. d. Step 4: After 10 minutes, add the total amount of crushed limestone and continue mixing for 4 minutes. e. Step 5: After 14 minutes, add the total amount of water and continue mixing for 3 minutes. f. Step 6: After 17 minutes, add the total amount of super-reducing admixture type G and continue mixing for 7 minutes. The total mixing time is 24 minutes, resulting in self-compacting concrete mixed with rice husk ash. 2. The process for producing self-compacting concrete, as per claim 1, where rice husk ash has a chemical composition by weight consisting of 0.35% alumina trioxide (Al2O3), 93.10% silicon dioxide (SiO2), 1.63% potassium oxide (K2O), 1.32% calcium oxide (CaO), 0.03% titanium dioxide (TiO2), and 0.24% iron oxide (Fe2O3), with a weight loss due to combustion of 1.91%, while having physical properties including an average size of 269.6 micrometers, a specific surface area of 472 square centimeters per gram, a specific gravity of 2.21, and a moisture content of 3.12. 3. The process for producing self-compacting concrete as per claim 1, in which limestone powder has a chemical composition by weight of 9.69% alumina trioxide (Al2O3), 17.70% silicon dioxide (SiO2), 0.46% potassium oxide (K2O), 47.92% calcium oxide (CaO), 0.56% titanium dioxide (TiO2), and 3.27% iron oxide (Fe2O3), with a weight loss on combustion of 13.10%, while having physical properties including an average particle size of 15.36 µm, a specific surface area of 12,950 sq. cm./g, a specific gravity of 2.66, and a moisture content of 2.43. 4. Method for producing self-compacting concrete according to claims 1, 2, and 3, where the concrete mix formulas are as follows: Mix Amount (kg/1 cubic meter of concrete) Formula Name Cement Fine Aggregate Coarse Aggregate Percentage River Sand Rice Husk Ash Limestone Powder Stone Water Reducing Agent Formula 1 551 814 35 43 710 2.10 Formula 2 551 733 68 86 710 2.10 Formula 3 551 652 132 171 710 2.10 Formula 4 551 490 205 255 710 2.10 Formula 5 551 330 271 340 710 2.10 Formula 6 551 165 338 424 710 2.10