With the development of the concrete industry, concrete batching systems have become indispensable equipment for various manufacturers. PHP editor Youzi introduces the concrete computer batching system to everyone. It is an advanced batching technology that can accurately control the proportion of each component of concrete, improve concrete quality, and reduce production costs. This article will delve into the characteristics, advantages and applications of concrete computer batching systems to help everyone fully understand this important equipment.
This will be done automatically just by inputting the ratio, cubic quantity and number of plates. For poor systems, you can only add the cubic quantity per plate. Without it, practice makes perfect
The main body is made of natural sand, which is a mixture of different sizes and different mineral particles formed after weathering of rocks, generally including river sand, sea sand and mountain sand. The quality requirements of the fine aggregate used in preparing concrete are as follows:
The fine aggregate used in preparing concrete must be clean and free of impurities to ensure the quality of the concrete. Sand often contains some harmful impurities, such as mica, clay, silt, silt, etc., which adhere to the surface of the sand, hindering the bonding of cement and sand, and reducing the strength of concrete. At the same time, it also increases the water consumption of concrete, thereby increasing the shrinkage of concrete and reducing frost resistance and impermeability. The sand used in concrete for important projects should be tested for alkali activity. If it is judged to be potentially harmful, when preparing concrete, cement with an alkali content of less than 0.06% should be used or an admixture that can inhibit the alkali-aggregate reaction should be used. . When using additives containing potassium and sodium ions, special tests must be conducted. If sea sand must be used, it should be washed with fresh water and its chloride ion content should not exceed 0.02%. If there are more fine soil powders in the sand, the workability of the mixture can be improved by slightly extending the mixing time.
1. After collecting the goods, you should check whether the accessories and technical documents are complete according to the packing list, and check whether the complete machine and parts are defective.
2. Users must lay a good foundation based on the basic diagram of the purchased product.
3. Set the installation position according to the basic diagram, so that each mechanism is in a horizontal state.
4. After the whole machine is in place, install the sensor and remove the fixing bolts of the weighing hopper. This means that the weighing hopper is in normal working condition.
5. Check whether each transmission part is flexible and whether the bolts at each connection part are loose.
6. Follow the "Ingredients Controller Instructions" for wiring and installation of electrical circuits, including: main power cable and each motor cable, sensor cable and remote control device cable.
7. Carry out an empty running test to check whether the steering of each motor is correct.
8. According to the instructions of the batching controller, conduct a simulated batching cycle test, set small weighings for various materials, and check whether they can perform automatic batching cycles.
★Special attention:
1. A knife should be installed between the main power supply and the electrical box.
2. The neutral line of the power supply of the batching control instrument must not be connected incorrectly with the ground wire, otherwise serious accidents will occur.
3. The batching controller must be reliably grounded, and the resistance should not be greater than 4 ohms.
4. The location where the batching controller is placed should be equipped with sunproof, rainproof, dustproof and shockproof facilities.
:
Permeable concrete has good air permeability and water permeability. Single-grain and double-grain pebble coarse aggregates were used in the test. The results show that:
water permeability
The water permeability and compressive strength of concrete are related to the porosity of concrete;
The amplitude difference of single-grain coarse aggregate The larger the
, the higher the strength of the permeable concrete prepared, and the worse the
water permeability
;
The performance of permeable concrete prepared with double-grained coarse aggregate is significantly better than that of single-grained coarse aggregate,
double-grained There is an optimal proportion of coarse aggregate blending.
5. What is the load of 0.5 cubic meter concrete mixer and batching machine?
6. What is the proportion of concrete ingredients?
Take c20 concrete as an example. When mixing, the mass ratio of cement is 1, the mass ratio of sand is 1.1, the mass ratio of water is 0.55, and the mass ratio of stones is 3.42. Their proportions must be calculated correctly before mixing. Properly mix it to avoid affecting the strength and construction effect of concrete.
7. Asphalt concrete ingredient list?
The asphalt concrete formula includes the following raw materials by weight: 10 to 15 parts of petroleum asphalt, 26 to 38 parts of gravel, 15 to 21 parts of fine sand, 12 to 18 parts of iron ore powder, and 3 to 7 parts of rosin for thickening Resin, 3 to 7 parts of octyl phenolic tackifying resin.Preferably, the asphalt concrete formula includes the following raw materials in parts by weight: 10 parts of petroleum asphalt, 26 parts of gravel, 15 parts of fine sand, 12 parts of iron ore powder, 7 parts of rosin thickening resin, and 7 parts of octyl Phenolic tackifier resin.
Sebaik-baiknya, formula konkrit asfalt termasuk bahan mentah berikut dalam bahagian mengikut berat: 13 bahagian asfalt petroleum, 31 bahagian kerikil, 18 bahagian pasir halus, 15 bahagian serbuk bijih besi, 5 bahagian resin pemekat rosin, dan 5 bahagian octyl phenolic Tackifying resin.
Sebaik-baiknya, formula konkrit asfalt termasuk bahan mentah berikut dalam bahagian mengikut berat: 15 bahagian asfalt petroleum, 38 bahagian kerikil, 21 bahagian pasir halus, 18 bahagian serbuk bijih besi, 3 bahagian resin pemekat rosin, 3 bahagian oktil damar penolak fenolik.
Semasa menyediakan konkrit C6O, simen Portland 52.5R boleh dipilih, tetapi perlu diperhatikan bahawa gred kekuatan simen yang tinggi dan dos buburan simen yang rendah boleh mengurangkan kekuatan batu simen dan kekuatan ikatan antara batu simen dan agregat. Pada masa yang sama, tahap kekuatan simen meningkat, dan kestabilan kemerosotan konkrit juga terjejas pada tahap tertentu. Konkrit C60 mempunyai nisbah air-simen yang rendah Untuk memastikan kecairannya, sifat reologi simen yang digunakan adalah lebih penting daripada kekuatan.
Konkrit telap biru ialah bahan binaan mesra alam dengan kebolehtelapan air yang baik, dan ramuannya perlu ditentukan mengikut keperluan khusus. Berikut adalah skema ramuan untuk konkrit telap biru dalam keadaan biasa:
1: Pasir adalah agregat utama dalam konkrit telap biru atau pasir tiruan dengan saiz zarah 2-5mm biasanya digunakan, dan dosnya menyumbang 10% daripada 60%-70% daripada agregat.
2. Kerikil adalah agregat sekunder dalam konkrit telap biru Biasanya, batu atau batu buatan dengan saiz zarah 5-10mm digunakan, dan dosnya menyumbang 20%-30% daripada jumlah agregat.
3. Simen: Simen ialah bahan penyimenan bagi konkrit telap biru Secara amnya, simen Portland biasa atau simen komposit digunakan, dan dosnya menyumbang 10%-15% daripada jumlah nisbah campuran konkrit.
4 Pigmen: Konkrit telap biru memerlukan penambahan pigmen untuk memberikan penampilan biru yang cantik. Dos pigmen biasanya kira-kira 2% daripada jumlah dos simen.
5. Agen pengurangan air: Untuk meningkatkan kecairan konkrit telap biru, mengurangkan jumlah simen dan meningkatkan kebolehtelapan air, jumlah agen pengurangan air yang sesuai boleh ditambah.
6 Lain-lain: Mengikut keperluan khusus, bahan tambahan seperti zarah kaca, sanga, serbuk bijih juga boleh ditambah untuk meningkatkan prestasi konkrit telap biru.
Perlu diingatkan bahawa kualiti dan perkadaran bahan mesti dipastikan semasa proses batching untuk memastikan prestasi konkrit telap biru memenuhi keperluan reka bentuk.
Secara amnya, untuk menentukan nisbah bancuhan konkrit atau menguji prestasi bahan tertentu dalam konkrit, ujian ini dilakukan secara ringkasnya ujian campuran. Untuk mensimulasikan keadaan konkrit semasa pengeluaran sebenar, jumlahnya secara amnya dikurangkan kepada 10L atau 15L mengikut nisbah campuran semasa pengeluaran, dan pengadun ujian khas di makmal digunakan untuk pencampuran percubaan Konkrit dalam ujian ini mungkin berjaya atau gagal, jadi Jangan mencuba banyak (seperti 1 persegi atau separuh persegi konkrit), terlalu banyak akan menyebabkan pembaziran.
Spesifikasi reka bentuk nisbah campuran lama memerlukan volum percubaan 10L, manakala spesifikasi baharu memerlukan 15L.
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