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 Posted: Wed 13:59, 12 Jan 2011 Post subject: converse pas cher Backfill high calcium in the App |
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Backfill high calcium in the Application of River and Creek
To the dense, layered paving compacted to the design elevation. After filling Hamamatsu high calcium, we conducted a degree of compaction, vertical and horizontal deformation, short rod penetration method, such as the determination of deflection. 1, Determination of degree of compaction measured frequency of each two each at the two circular knives, knives with Determination of 200cm2 ring. Pine Shop The results measured 60cm Table 5: Table 5 times the number of dry density of compacted maximum dry density of compaction over 5 times 1.291.191.47888l7 1.3l1.181.478980 loose over 1.3l1.2l1.4789829 Shop 40cm rolled 7 times, the measured results in Table 6: Table 6 Number of dry density of the best cutting ring dry density compaction l1.421.479621.411. 479631.421.479641.331.479051.261.478661. 31.478871.391.479581.261.478691.3l1.4789101.321.4790ll1.331.4790121.331.4790 seen from the above two tables, with the Dong Fang Hong 75 bulldozer as rolling machines,[link widoczny dla zalogowanych], rolling to select 7 times the number of times as the best rolling. 60cm rolling pine shop, two storeys real degree of pressure measurement was found to achieve the upper compaction requirements, and lower the lower degree of compaction, mainly the thickness of the thinning of pine spread to 40cm, rolled 7 times After compaction can meet the requirements, which determine the best song shop high calcium thickness. 2. In order to understand the deformation of the vertical and horizontal expansion of high calcium effect on the quality of the project, in the high calcium level after filling to the design, carried out the determination of vertical and horizontal deformation. (1) Bang in the river bed filled the establishment of two sections, each section into five piles, pile spacing equal to the standard height measurement every day, after leveling a few days and found no vertical protrusion expansion. (2) fill in the bed of the establishment of two sections Hama, in the river to play one of the stakes,[link widoczny dla zalogowanych], with a wire connection between the two stakes tension,[link widoczny dla zalogowanych], and then along the wire into the wood piles in the river bed, respectively, a day bed in the determination of stakes along the wire direction of the deviation from the data, the results have not found a lateral deformation of the situation. Expansion of calcium fly ash can be seen in the transport and had almost disappeared during the construction period, and even some expansion, for filling Bang project,[link widoczny dla zalogowanych], is beneficial, it can improve the density of the surrounding natural soil to increase its density, reducing the settlement. A 60 - Shanghai-Hangzhou Expressway (Shanghai Section) academic horn (3) short rod penetrometer determination of density and intensity, the measured data in Table 7: short rod penetration instrument hammering number of people with the determination of the date time table 7 5 / 195/205/215/225/235/245/255/265/275/285/295/30 hammering number 172123252729313233343537 visible over time, gradually increase the number of hammer. RCC formed the longer the better ability to resist deformation, fully reflects the strength characteristics of high calcium. (4) Deflection Measurement and Analysis in the 2 months after completion of construction, we carry out deflection testing, deflection measured by the liberation of cA ~ 10B standard car back and forth over the test, each 12 times, the results see Table 8. In order to facilitate data analysis and comparison, we measured the liberation of the standard car value multiplied by the 1.41 coefficient of deflection, deflection value converted into the Yellow River and into the formula E0 = (9308 / I.) -0 Converted modulus. Table 8 measurement points Deflection (mm) value of the measuring point conversion Deflection (mm) value of the conversion of heavy 10.0410.1220.0220.1830.0230.1240.12Loi = 0.08mm40.182 = 0.09mm50.04 standard heavy-duty truck standards for vehicle conversion conversion 50.08 60.120.08 × 1.14 = 0.11mm60.080.09 × 1.14 = 0.13mm70, 04Eoi = (9308/0.11) one. . 70.12Eo2 = (9308/0.13) one. 80.10 = 562.7kg/cm80, 04 = 476kg/cm90.04 = 56.3MPa90.04 = 476MPa100.06100.06110.20110.06120.20120.04 can be seen from the table, twice the value of the deflection close,[link widoczny dla zalogowanych], calculated from the resilient modulus is also similar, with an average 51.9MPa. Gray intensity of the two calcium than subgrade strength, low calcium fly ash strength. 'Through the above analysis and practical application, we can see that high calcium to fill Bang has certain advantages in construction, development and utilization of a new material to be.
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