Low-cost premixed concrete
A ready-mixed concrete, low-cost technology, applied in the field of building materials, can solve the problems of ready-mixed concrete segregation, strength decline, poor compactness, etc., and achieve the effect of easy pumping, high compactness and high strength
Inactive Publication Date: 2014-09-03
郑卫东
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Problems solved by technology
[0006] The technical problem to be solved by the present invention is that the addition of coarse aggregate in the prior art is high, resulting in ready-mixed concrete prone to segregation, decreased strength, poor compactness and prone to plugging pump accidents, and then provides a coarse aggregate added High-strength, low-cost ready-mixed concrete weighing less than 1000kg
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Embodiment 1
[0045] The C15 ready-mixed concrete described in this embodiment includes the following components per cubic meter of concrete: 83kg of cement, 111kg of fly ash, 83kg of slag powder, 813kg of sand, 397kg of bluestone, 596kg of stone, 174kg of water, plus Dose 2.8kg.
Embodiment 2
[0047] The C20 ready-mixed concrete described in this embodiment includes the following components per cubic meter of concrete: 118kg of cement, 88kg of fly ash, 88kg of slag powder, 810kg of sand, 396kg of bluestone, 594kg of stone, 173kg of water, and Dose 2.9kg.
Embodiment 3
[0049] The C25 ready-mixed concrete described in this embodiment includes the following components per cubic meter of concrete: 154kg of cement, 62kg of fly ash, 92kg of slag powder, 808kg of sand, 395kg of bluestone, 593kg of stone, 173kg of water, plus Dosage 3.1kg.
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Abstract
Provided low-cost premixed concrete comprises cement, fly ash, slag powder, fine aggregate, coarse aggregate, water and an additive. Based on per one cubic meter of the concrete, the concrete comprises the following compositions by mass: 83-333 Kg of cement, 0-118 Kg of fly ash, 75-143 Kg of slag powder, 687-813 Kg of sand, 985-993 Kg of coarse aggregate, 172-174 Kg of water and 2.8-4.8 Kg of the additive. The coarse aggregate is composed of cyan stones and broken stones with the mass ratio of 4:6. By controlling the addition mass ratio of cyan stones to broken stone to be 4:6, optimum matching of the coarse aggregate is guaranteed, and by matching with cement, fly ash, slag powder, fine aggregate, water and the additive with specific quantities and guaranteeing the addition amount of the coarse aggregate to be 985-993 Kg, the high-compaction-degree easily-pumping high-strength low-cost premixed concrete with the cubic compressive strength degrade of C15-C50 is prepared.
Description
technical field [0001] The invention relates to a low-cost ready-mixed concrete, which belongs to the field of building materials. Background technique [0002] With the continuous development and improvement of the ready-mixed concrete industry, the overall development trend of the ready-mixed concrete industry has shown the characteristics of transition from extensive to technical. The advancement of ready-mixed concrete technology has also intensified the competition in the industry. In order to obtain reasonable profits, manufacturers need to continuously study methods to reduce the cost of concrete. [0003] In order to reduce the cost of ready-mixed concrete, in the prior art, low-cost fly ash or slag powder is usually added to replace part of the cement to prepare ready-mixed concrete. For example, in "Effects of Slag Powder and Fly Ash on the Early Performance of Concrete", Ding Yunbin, Jiangxi Building Materials, pages 11-14, discloses a concrete, which includes 34...
Claims
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IPC IPC(8): C04B28/04
Inventor 郑卫东
Owner 郑卫东