混凝土攪拌車對水泥顆粒的要求有哪些
混凝土攪拌車是用來集中攪拌混凝土的聯合裝置，又稱混凝土預制場。由于它的機械化、自動化程度較高，所以生產率也很高，并能保證混凝土的質量和節省水泥，常用于混凝土工程量大、工期長、工地集中的大、中型水利、電力、橋梁等工程。隨著市政建設的發展，采用集中攪拌、提供商品混凝土的攪拌車具有很大的良好性，因而獲得迅速發展，并為推廣混凝土泵送施工，實現攪拌、輸送、澆筑機械聯合作業創造條件。
Concrete mixer truck is a combined device used for centralized mixing of concrete, also known as concrete prefabrication yard. Because of its high degree of mechanization and automation, it has high productivity, and can ensure the quality of concrete and save cement. It is often used in large and medium-sized water conservancy, electric power, bridge and other projects with large amount of concrete, long construction period and concentrated construction site. With the development of municipal construction, the mixer truck with centralized mixing and commercial concrete supply has great advantages, so it has developed rapidly, and creates conditions for promoting concrete pumping construction and realizing the joint operation of mixing, conveying and pouring machinery.
混凝土攪拌車主要是適用于各級的公路的基層的以及底層的，水泥的穩定中粒土和粗粒土用作基層時其水泥的計量不要超過百分之六。對于土的要求就是要比較易于破碎，要滿足一定的級配，以便于碾壓成型。
The concrete mixer truck is mainly suitable for the base course and bottom course of highways at all levels. When the cement stabilized medium grained soil and coarse grained soil are used as the base course, the cement measurement shall not exceed 6%. The requirement for soil is that it should be easy to be broken and meet certain gradation, so as to facilitate rolling forming.
細粒土要求：顆粒的的直徑要小于9.5毫米，同時小于2.36mm的顆粒含量不小于百分之九十。
Requirements for fine-grained soil: the diameter of particles shall be less than 9.5mm, and the content of particles less than 2.36mm shall not be less than 90%.
中粒土要求：顆粒的的直徑要小于26.3毫米，同時其中還要小于18.6毫米的顆粒含量不小于百分之九十。
Requirements for medium grained soil: the diameter of particles shall be less than 26.3mm, and the content of particles less than 18.6mm shall not be less than 90%.
粗粒土要求：顆粒的粒徑小于37.5mm，且其中小于31.5mm的顆粒含量不小于百分之九十。
Coarse grained soil requirements: the particle size is less than 37.5mm, and the content of particles less than 31.5mm is not less than 90%.
