Influence of Aggregate Particle Size and Particle Shape on Concrete

1, the impact of particle sizeHenan 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:twin shaft concrete mixers for sale,concrete batching plants,concrete mixer,blocking making machine,concrete pump,etc. The more water cement ratio is, the greater the permeability of concrete is, the less influence of mortar is, and the frost resistance of concrete is reduced. 2, the influence of grain shape For concrete with a certain strength and density, the construction of the mixture is the most important quality of the concrete. In concrete construction, the size of the aggregate is sometimes greater than the impact of gradation. The ideal aggregate particle shape is spherical in shape (i.e., macro sphere). When the surface roughness is same, the specific surface area of equal diameter aggregate is the smallest, the water consumption is the smallest, and it can meet the construction and strength of concrete properties. The weathering of coarse - grained granite concrete slump is 195mm Diesel drum mixers, 28 days strength up to 71.3MPa, and Wushi Valley stones belong to dense limestone, high strength Mobile Concrete Brick Making Machine, but the grain shape is not good, because of the large quantity of concrete mixture required, to meet the requirements of the concrete strength of water cement ratio, mix and logistics dynamic is poor. To ensure the slump has reached 195, the measures is to increase the amount of water, which increases the paste aggregate ratio, is not the economy, will have greater susceptibility to cracking measures; the second is improve the water binder ratio mini mix concrete batching plant, strength is not up to the requirements. The water cement ratio does not fall, the result is strength reaches 68.8MPa, slump was not to 150mm, apparently not use intensity is low but the grain shape of Weathering...