Q:I am a gravel transit business I would like to ask the customer to sell gravel need to pay any tax?

9) stipulates that general taxpayers sell their own production and production buildings Materials used by the sand, soil, stone, can choose to follow the simple method in accordance with the 6% levy rate to pay VAT

Q:Ordinary concrete mix design rules JGJ55-2011 in the sand material 28d compressive strength is what glue

Mortar = cementitious material + standard sand gelling material, formerly refers to the cement, the new standard refers to the cement is replaced by fly ash. 450 cement, replaced by fly ash slag 10%, that is, 360 cement, 4 tiger harbor suppression of the tide of the tide attack 5 gray fly ash, 45 ore powder by the previous super-mixed coefficient to increase the amount of glue, and now through Affect the coefficient to reduce the strength of rubber, and then increase the amount of glue

Q:World of Warcraft when the sand of the bottle of the required materials and price, detailed, thank you.

Is it a recipe? The recipe for the sand bottle must be an archaeological profession that can be made by recognizing the tois debris, and the 5% chance to open the sand bottle recipe, and the recipe picks up, the conditions are very harsh The But also must be accompanied by alchemy to do it, that is to say archeology and alchemy! Mixed with yellow iron crystal bottle time of the sand real gold the wind of the chain of drugs Titan of the elite chain of drugs deep rock oil

Q:Can you list some of the building materials used at high temperatures

High temperature resistant materials include refractory and heat resistant materials, inorganic compounds, and polymer materials

Q:. known to be adjusted by the mixing of concrete, a variety of materials, the amount of mixing materials: 4.5kg cement, water 2.7kg, sand 9.9 Hai Fu and Yan Gu Feng off the auxiliary kg, gravel 18.9kg. The apparent density of the concrete mixture was measured to be 2400 kg / m3. try to calculate the amount of various materials per cubic meter of concrete. If the construction site sand moisture content of 4%, stone moisture content of 1%, seeking construction mix. If you do not mix and match, directly to the laboratory with the use of construction in the field, the actual mix of concrete how to change? What is the effect on the strength of concrete? (Using 32.5 grade slag cement). Very urgent ah to the details of the process will be able to leave the best! Thank you! The The The The The The The The The The The The The More

. known to be adjusted by the mixing of concrete, a variety of materials, the amount of mixing materials: 4.5kg cement, water 2.7kg, sand 9.9 Hai Fu and Yan Gu Feng off the auxiliary kg, gravel 18.9kg. The apparent density of the concrete mixture was measured to be 2400 kg / m3. try to calculate the amount of various materials per cubic meter of concrete. If the construction site sand moisture content of 4%, stone moisture content of 1%, seeking construction mix. If you do not mix and match, directly to the laboratory with the use of construction in the field, the actual mix of concrete how to change? What is the effect on the strength of concrete? (Using 32.5 grade slag cement). Very urgent ah to the details of the process will be able to leave the best! Thank you! The The The The The The The The The The The The The More

Q:Basement wall masonry construction can use concrete filling block, air defense parts of the wall and whether the use of this material masonry?

Human defense can not, or else can not prevent, huh, huh

Q:Novice want to do a good job decoration? Building materials to buy skills

In general, before the purchase of building materials, we must list the list of building materials, divided into the main material and auxiliary materials

Q:World of Warcraft orange stick when the sand in the Oulton, seeking detailed coordinates

In the upper left corner of the Oulton an oasis in a female hotel owner to sell, the location of the way about .. can not remember

Q:Why the sand can not replace the river sand to do building materials

Mountain sand because of the rough surface, so the cement attachment effect is good, but the mountain sand composition is complex, most contain soil and other organic impurities. Therefore, the general decoration works, are recommended to use the river sand. River sand surface roughness moderate, and more clean, with less impurities. Generally from the market to buy back the sand have to use the net to filter before use.

Q:Please experts advise, the production of 1 ton of coated sand raw materials, how much each need, about how much cost?

Oh, so the cost is not good to calculate the different price of the original sand is not the same, different ways of production, then the cost is certainly not the same, but the profit is certainly