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| Several raw materials of concrete block; Several raw materials of concrete block | |
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| Tweet Topic Started: 23 Apr 2015, 06:11 PM (71 Views) | |
| joanna | 23 Apr 2015, 06:11 PM Post #1 |
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the sand as the brick raw materials, often using mountain sand, river sand, aeolian sand also available artificial sand crushed or industrial waste sand,no matter what kind of sand, shall meet The following requirements. Coarse particle size uniform sand or ultra-fine sand particle size less than 0.75mm. Henan Daswell Machinery Co., Ltd,is a professional manufacturer and trader specializing in the research, development and production of construction machinery for nearly 30 years. Our main products are as follows:Planetary Concrete Mixers for sale,concrete batching machine,mini batching plant,etc. We will provide you with the best product and service. quicklime, quicklime quality directly affects the the bricks quality, it is better to select high in calcium concentrate,good digestion , high temperature digestion of quicklime, their specific requirements are as follows: CaO content gt; 60%; MgO lt; 5%; the digestion rate lt; 15min; digestion temperature gt; 60 ° C; burned lime lt; 5%; the quicklime lt; 10% pulverized ash lt; 10%. Cement: ordinary portland cement mixed with 10% of the 425 #, can improve the strength and water resistance of the brick, after immersion in water does not crack. Otherwise, brick cracking phenomenon. admixtures: mixed with a small amount of admixture (booster dose) diesel mixer for sale, addition to brick induration strength, but also to reduce the amount of cement electric concrete mixers for sale, reduce product cost water: water consumption appropriate, high strength brick. Forming less water, the strength of the brick poor, the material in the mold resistance, single-sided pressure dense brick underside; molding water content, wet underside, out of the mold easily break something. When the sand with a moisture content of 3-5%, molding the amount of water is preferably 10%. If the raw materials of fine sand is too much, then dropped to 8%. Pastes selection of raw materials is very important Concrete Planetary Mixer, strong and beautiful brick can thus produced. |
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8:47 AM Jul 11