A kind of high plasticity concrete and the method for controlling its mixing performance
A technology of concrete and high plasticity, applied in the field of high plasticity concrete, can solve problems such as construction difficulties, achieve the effects of saving construction control costs, safe and reliable technical performance, and avoiding quality control risks
Active Publication Date: 2018-04-17
SINOHYDRO BUREAU 5
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Problems solved by technology
In the process of mixing concrete in engineering construction, due to the influence of rainy days and rainy seasons, the use of bentonite slurry with an appropriate concentration often exceeds the water consumption requirements for meeting the fluidity requirements of the concrete itself. This is in areas with high rainfall and high water content raw materials. Construction cause great difficulty
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[0048] The method, the concrete mix ratio and the achieved mixing performance of the present invention will be further described below according to specific embodiments and accompanying drawings.
[0049] A method of controlling the mixing properties of highly plastic concrete includes the following:
[0050] (1) Selection of raw materials: raw materials include sand and gravel aggregate, cement, water, bentonite, stabilizer, retarding water reducer; the sand and gravel aggregate includes coarse aggregate and fine aggregate.
[0051] According to the actual needs of the project, seek reasonable raw materials that meet the construction requirements with technical standards. The characteristics of raw materials meet the requirements of construction technology design. For high plastic concrete, the raw materials suitable for plastic concrete should be selected as much as possible. According to the test results, verify the performance reliability of raw materials. In the select...
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Abstract
The invention discloses high-plasticity concrete and a method for controlling the mixing performance of the high-plasticity concrete. Dry gravel aggregate mixing ratio is determined by mixing ratio tests, the decreased amount of bentonite slurry is replaced by water with the same weight by bentonite mixing tests to determine an allowed bentonite mixing range, and further allowed maximum moisture content of gravel aggregate is obtained. In actual construction, if the actual moisture content of the gravel aggregate is lower than the allowed maximum moisture content of the gravel aggregate, the dosage of the bentonite slurry with the same weight is correspondingly decreased according to the actual moisture content of the gravel aggregate, and then the concrete is mixed. The method realizes rapid construction of the high-plasticity concrete in areas with high rainfall capacity and high water content of materials, quality control risks caused by change of high-plasticity concrete mixture along with the water content of raw materials are effectively avoided, construction control cost is effectively saved, and the method has the advantages of high production efficiency, simplicity and convenience in operation, high practicability, safe and reliable technical performance and the like.
Description
technical field [0001] The invention relates to the technical field of high plastic concrete, in particular to a high plastic concrete and a method for controlling its mixing performance. Background technique [0002] High plasticity concrete means that under certain external force, compared with ordinary concrete, concrete has certain mechanical strength, higher deformation, lower elastic modulus and high impermeability, and has strong plastic deformation ability. A new type of concrete with the main characteristics of high impermeability and high impermeability. High plastic concrete is a hydraulic building material that has developed rapidly in recent years. Its high performance is mainly reflected in its high deformation performance, low elastic modulus and high impermeability. It is widely used, and it is still in the research and application stage in our country. In general, high plasticity concrete is mainly used in dam foundation cut-off walls of hydraulic structur...
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IPC IPC(8): C04B28/00G06F19/00
CPCC04B28/00G16Z99/00C04B14/00C04B14/104C04B2103/302C04B2103/22
Inventor 王昌王叶勇李博博李峰张帆张赛周安清
Owner SINOHYDRO BUREAU 5