20 17 supervision engineer examination time is 2 1 on may 20th. I have arranged some jingles about quality inspection and control for you, hoping to help you.
1, subgrade fill compaction test
Choose good materials for embankment filling, and make tests before filling; The samples shall be representative and the testing frequency shall not be less than.
2, subgrade drainage
Subgrade construction, drainage should be first; Put an end to flooding and ensure quality.
3. Rolling before subgrade filling
Embankment construction should first put the slope and move the topsoil to the sideline; Hole filling, leveling, compaction, embankment stability, not sinking.
4. Selection of subgrade filler
The subgrade filler should be selected, and the stable soil should be carefully found; Soil is not suitable for improvement, and strength and particle size are more important.
5. Embankment filling steps overlap each other.
The old and new interfaces should be connected, and steps should be dug on the slope; Filling layer by layer, overlapping construction layers.
6. Layered thickness of filled embankment
Embankment filling should be carried out in layers, and the thickness of filling layer is moderate; Thirty centimeters as a reference, and then adjust the process test.
7. Filling width of fill embankment
The width of embankment should meet the requirements to ensure that the edge is pressed firmly; There are many diseases caused by the lack of filling and the width of the side, so the survey and lofting should be detailed.
8, different soil mixed embankment
Embankment fill is different, according to the soil layer; On the basis of strength and water permeability, the subgrade is stable and diseases are prevented.
9, abutment backfill
The abutment back is filled with materials, thin and fully compacted; Backfill range should not be less, and the back of abutment will not trip.
10, the choice of compaction machinery
Choose compaction machinery, commonly used static pressure machinery; Sand vibration compaction efficiency is high, and sheep feet are good at rolling clay.
1 1, compacted water content
When the water content is the best, the mechanical compaction work is less; Turning over the sun, sprinkling water to adjust the water content, and mixing ash when it is too wet are all good methods.
12, fill embankment is rolled.
Light before heavy, steady before vibration; From high to low, wheel tracks overlap.
13, compactness of embankment
Check whether the rockfill body sinks and classify the compactness of the fill; Area 909395, compaction ensures stability.
14, soil embankment compaction test
Embankment compaction is very important, and compaction inspection is indispensable; Double indexes of deflection measurement and compaction deflection of soil subgrade.
15 compaction of high fill embankment
Self-weight should be taken into account when high filling to test the bearing capacity of foundation; According to the regulations, walking with a rammer is an expedient measure.
16, rock-filled embankment filler
Require rockfill to meet the strength and particle size; Fill the upper part of the road bed and test the bearing capacity with soft stone.
17, layered thickness and paving of rock-filled embankment
Rock-fill layer should be horizontal and the thickness should be suitable for stable pressure; Mechanical paving should be assisted by manpower, and manual paving should be smooth.
18, compaction of rock-filled embankment
Rock-filled embankment is stabilized by heavy machinery operation; Lightweight machinery is thinned, and measured settlement pressure is tested.
19, layered thickness of earth-rock embankment, stone particle size
The earthwork filling is divided horizontally, with a thickness of 40cm；; The thickness is suitable for limiting the particle size, and the hard and soft stone particles are different.
20. Compaction of earth-rock embankment
The difference of earth-rock mixed filling depends on the quantity and particle size of stone; Many pieces belong to rock filling, and few pieces belong to earth filling.
2 1, subgrade construction in paddy field section
The road section should be drained first, and the soft foundation section should be constructed early; Preparing soil, mixing ash, controlling boiling and filling thin and pressing quickly are the key points.
22, expansive soil subgrade construction
The preparation of soil mixed with ash is sandy, so it is very important to mix evenly; Mechanical stirring is a bit excessive, and thin filling and quick pressing are the key.
23, cement powder injection pile construction
Do the proportional test first, and there must be no less pile testing work; It is also important to check the elevation ash frequently and re-mix the pile top.
24, fly ash embankment paving compaction control
Strictly control layered paving, paving and rolling should be compacted; Adjust the optimum moisture content and control the rolling sequence;
It is forbidden to turn around and brake, and the maintenance and drainage are endless.
25, stone blasting
Slope stability is the most important, and small guns should be used in design; Two rows of holes near the inclined plane are more reliable to reduce looseness.
26. Deep excavation and cutting blasting of unilateral slope rock
Blasting design should be combined with reality, mainly slope protection; Accelerate the progress of mechanized construction and comprehensively arrange the form of blastholes.
27. Composition design of stabilized soil mixture
The purpose of composition design is clear and the test ratio is optimized; All the data have a basis and guarantee the guidance of construction.
28, stabilized soil mixture detection
Test and detection should be timely, and problems should be corrected in time; Have the basis of applying standards and strictly control the quality.
29 specimen maintenance of stabilized soil mixture
Specimen maintenance should be mastered, familiar with methods and strictly operated; According to the true and accurate data, guide the construction quality.
30, stable soil construction
Stabilized soil should be carefully constructed and strictly required; The ingredients must be stirred evenly, and the right amount of water should be compacted and stabilized.
3 1, construction survey of stabilized soil
Surveying and setting out is essential, and the standard sample depends on it; Need to retest and verify to ensure that the accuracy is not wrong.
32, stable soil bearing layer detection
The lower bearing layer construction inspection, the shape requirements meet the standards; Internal quality should be tested, and construction can only be started after all products are qualified.
33, stabilized soil wet mixing sprinkler
Sprinkling water should be controlled slowly, neither more nor less; Don't be too dry when the water volume is slightly larger, it will be more uniform and easy to compact.
34, stable soil road mixing method
Don't turn it over at the beginning to prevent the rubber from sinking; Remove the interlayer and stir evenly, and then stir deeply for one centimeter.
35. Centralized mixing of stabilized soil
Concentrated mixing is good, and the mechanical properties are improved; Aggregate requirements should be strict, and the mixing quality can be guaranteed.
36. Stable soil transportation
The road is smooth and potholes-free, and the transportation must be smooth; Shortening time, arriving early and timely delivery are the most important.
37. Stabilized soil should be laid by grader.
Paving aggregate should be uniform, and coarse and fine particles should not be nested; Looking for new materials to fill the potholes, leveling measures can be controlled.
38, road mixing method of plastic construction
Compaction and leveling is the forerunner, and the shaping process is indispensable; Skillfully operate according to regulations to ensure mechanical support.
39, rolling process
Keep in mind during the rolling process, and the machinery should be compacted well; Strict control of quality standards, compactness and smoothness are the most important.
40. Treatment of vertical and horizontal summer-planting in road mixing construction
The vertical and horizontal summer-planting treatment is proper, and the height difference becomes smooth; Mixing, rolling and winding are tight, leaving no future trouble for a long time. ;