With the nation’s raising needs for environmental management, a great deal of top notch building materials are more and more limited. Under the guidance of the sustainability approach, mechanical sand, unique great sand and various other products have entered the business concrete market. Because of the facility ranges as well as different homes, it usually has an excellent influence on the concrete job, which triggers pumping troubles in the building process, and also often even unable to get in the mold. This paper discusses the concrete basic materials, mix proportion layout and also building and construction innovation, so regarding help with the simple as well as reliable solutions despite similar troubles.
1 Raw material control
( 1) Category and storage of different basic materials: according to different classification of efficiency.
( 2) Attempt to guarantee the stability of all sort of raw materials. The stability of the high quality of the product itself makes a reasonably big contribution to the standard deviation, which is beneficial to the stability of the top quality.
( 3) Secret control of technological indicators vulnerable to troubles: such as chloride ion content of desalination sea sand, stone powder content of mechanical sand, mud web content of melon seeds, grading of big rocks, bit form, cement security, water need ratio of fly ash, task index of mineral powder, depression preservation of admixture, and so on( 4) In-site production procedure control: proactively connect with front-line manufacturing employees, and also can utilize instantaneous messaging tools to interact via team conversation. Specifically to the blending structure drivers, forklift workers, overview various products (sand) feeding way, concrete production process of the size of mixing time, blending current dimension, slurry flow rate to stand for the fluidity of concrete, concrete right into the mixer audio of various judgment of the quantity of stone.
- Mix proportion design
( 1) Make an affordable design according to the various buildings of products to stay clear of the downsides of products. For instance, we frequently utilize two kinds of blending, all-natural sand excellence modulus is fine, however the mud material index value is excellent, the fineness modulus of mechanical sand is huge, the content of rock powder is likewise high, in this case, we can enhance the percentage of all-natural sand in the mixed sand, suitably lower the excellence modulus of combined sand, and after that minimize the sand rate can fix the problem. This can not just make certain the strength of concrete, but likewise resolve the problem that concrete operate in the building process can not satisfy the requirements.
( 2) Establish the version of build-up concept in the process of mix ratio style, and pick affordable raw materials. In the very early years, the state is not very rigorous on the mining control of river sand, some business owners illegally take river sand, Taking sand extracted in the Yangtze River Delta as an instance, the excellence modulus of this kind of river sand has to do with 0.3 ~ 1.2, as well as the mud content is basically within 1%. We can utilize this type of material to change the flow level as well as communication of concrete. On the one hand can save the expense, on the other hand can likewise boost the job of concrete. However, because of the boost of national environmental management initiatives, the previous prohibited mining in the Yangtze River no longer exists, instead of the previous blown sand and after that with the screened fine sand, which is characterized by low fineness modulus (concerning 0. Around 1), high mud material (regarding 7% ~ 25%), personally really feel such product is not suitable for concrete, for concrete liquidity, stamina, downturn loss, as technical personnel should be reasonable overview in charge, monitoring principle, give up such products, can not eliminate the golden eggs, light cost and also ignore the high quality. Once again such as the percentage of sticky material, as a basic technical workers only take note of the quantity of all kinds of products, typically disregard the issue of particle grading, if the material bit rating modifications need to change the proportion, the area is an essential indication of powder fragment distribution, such as ore powder surface listed below 400m2/ kg, require to reduce the percentage of the percentage of ore mix.
( 3) Dynamic control of admixture (main finger pumping agent and water decreasing representative). Because of the lack of sand and rock materials, the mud material of different batches of sand and also rock materials modifications greatly. By adjusting the percentage of different sand and also stone products, the impact of mud material change on the functioning nature of concrete can be appropriately decreased. Likewise can be adjusted by the admixture to make sure that the independent concrete water intake in a controlled variety, such as regular C30 concrete production water usage can be regulated in 100 ~ 140 kg/m3 array, water usage is too little is not conducive to the late cement hydration, way too much water usage is harmful to the strength and toughness of concrete. Consequently, the amount of admixture can be dynamically controlled to make sure the working capacity of concrete, and likewise to make sure the strength of concrete in the later period.
( 4 )Use of adhesive agents. Under the premise of limited sand products, the rate of concrete is obtaining greater and higher, so it additionally created adhesive representative. The precursor of sticky minimizing representative was cement grinding aid, which was made use of in concrete and also located to enhance the toughness of concrete. In the test and also the actual production process, after adding a specific proportion of adhesive representative, it can be clearly discovered that the harmony of concrete is boosted, and the slurry quantity comes to be more, which can considerably boost the previous big capacity mixer transport to the building site, the start as well as the end of the stone is much more, as well as the center of the concrete stone is much less. Consequently, I think that the most significant impact of adhesive agent is not to minimize the amount of cementitious product, yet to boost the efficiency of concrete, I did not reduce the quantity of use of sealing material in the usage procedure, however to utilize sealing representative to enhance the work of concrete, can also be generally referred to as “concrete state regulatory authority”.
3 Construction innovation
( 1 )Weather condition effects. The author once listened to a peer claimed a weird thing, when autumn, a concrete business in the manufacturing of a bottom plate concrete, even more amount, the daytime manufacturing process of everything is normal, concrete liquidity can be excellent, yet late at night the pump stone is way too much, incapable to pump. After the technical personnel reached the scene discovered that the concrete has been segregation, professionals likewise questioned, the day or regular, why to the evening on the phenomenon of segregation? As a matter of fact, we in some cases neglect the problem of temperature level difference between night and day. When the temperature distinction between day and night is large, we should proactively adjust the admixture, and also suggest that the evening manufacturing should lower the dose by 0.2% ~ 0.4%. The details scenario depends according to the temperature level distinction.
( 2 )Refine control of the building and construction website. Building and construction site can arrange the tester right into the pump, into the concrete visual, such as high-rise drag pump (lorry pump) pouring concrete, found in pump truck receptacle job should satisfy the requirements of the concrete, but the building device reflects right into the challenging, really this scenario is disregarding the pump loss, drag the pump pipeline connection is most building personnel prior to the concrete link, the seal edge and also clamp can not be compared with the pump truck, basic each link has a percentage of water, much less right into more, it will certainly trigger difficult right into the mold. For that reason, in the process of such concrete manufacturing, greater needs are advanced for the work, usually the expansion degree need to be more than 450mm, so regarding meet the building requirements.
4 Conclusion
(1) Resources are the basis of controlling the concrete work, pick the ideal products, classification and use in the storehouse.
(2) blend ratio layout according to the performance of the material to advertise strengths and also stay clear of weak points, to stay clear of causing slump adjustments excessive, the choice of glue agent can enhance the work of concrete.
(3) Construction website tracking observation, according to the temperature, the real construction conditions in advance of the style of concrete job.