Steady cement curb quality material crushing disposal

Production process of cement stabilized layer aggregates processing process is generally: Cleanup Ishiyama topsoil → rock blasting into rubble → feeder → jaw crusher →

crusher → vibrating sieve machine → products. In the above process, because the feeder is loaded rock blasted open mouth

The stone tablets, which contain a certain soil, therefore, must be feeder and jaw crusher added between energy screening 10cm below the soil and impurities shaker to ensure

access cone machine stone clean. In addition, the jaw crusher and impact crusher with material storage increased between

Warehouse, serves two purposes: First, to improve production efficiency; second is to ensure supply of stone to stone crusher balanced and stable, thus ensuring the finished

material particle shape, particle size  Feeding equipment  distribution stability; Third, in the jaw crusher and storage silos installed between the vibration sieve machine, jaw crusher out from

the rubble sample 3

~ 5cm gravel into the storage silos, to the crusher, because the gravel specification over the General Assembly reduced back-breaking production efficiency; too small to make

the file without counterattack broken into particles below 31.5mm excessive, resulting in aggregate flakiness of the increase; Fourth, in order to control aggregates containing

powder

Volume, need to be installed before the crusher plant manufacturer dust removal equipment, vibrating sieve machine belt outlet installed dust removal equipment. Therefore, aggregate processing

process as shown.

The main control aggregate index selection flakiness content, the key sieve throughput, 0.075mm aggregate throughput as the primary control targets. And in the following three

aspects of the file aggregates as the main technical requirements: flakiness content of aggregates volumes flake content to meet regulatory requirements

≤ 20.0%), and the smaller the better; each key sieve throughput at 90% to 100% range, as far as 95% for the control objectives, acceptance criteria can be set at 91% ~ 99%;

clay content the smaller the better, to meet regulatory requirements (specification requirements: clay content ≤ 5.0%).

Aggregate mix design process quality inspection with qualified aggregates, can be done on optimum design, draw conveniently situated and linear continuous smooth gradation

curve, and the design curve does not change with different batches of screening results change significantly. Aggregate processing quality of the construction test set

Standardized materials processing technology can effectively control the aggregate gradation variability. Inspection during construction phase, should further examine the scene

of cement stabilized layer mixture gradation variability. In the actual construction, should mix washing screening results to test.

Aggregate mining and processing according to the above process, in Yangyang high-grade cement pavement two stable layer aggregates production, has been carefully investigated,

such as the one shown with a production line, and its application in carp collapse quarry, production that could also apply to cement stabilized subbase and base layers 4

Sizes of stone, were: 22 ~ 29,11 ~ 22,6 ~ 11,0 ~ 6mm. In the gravel production line to build and debugging.

Aggregate processing of the main control indicators test aggregate principal control indicators were: flakiness content, the key sieve throughput, 0.075mm throughput from Table

4 to 6 gives the relevant data for each control indicators point of view, the quarry produces aggregates meet major technology to

Requirements.

Aggregate processing quality construction than design verification aggregate processing quality addition to the mixing ratio test, but also in the construction process to

further test the cement stabilized soil gradation variability. Obviously, the "Highway Engineering Aggregate testing procedures (JTGE42-2005)" in the aggregate mixes screening

Test is appropriate. For cement stabilized base, base, respectively, the number of 100 samples, statistical results see which mixture gradation variability through the sieve

with the coefficient of variation of the rate to characterize, from a statistical point of view the results in the construction process, the mixture gradation always consistent

with the design grading.

Conclusion (1) Cement Stabilized Aggregate processing layer lies the key sieve selected, when the base, base with aggregates processed simultaneously, the key sieve may be set

for 4.75,9.5,19,26.5 mm, machining vibration sieve is 6,11,22,29 mm, and debug, and monitor back plate

The gap between the hammer and the board; (2) of its respective set of specifications corresponding to the key material should sieve passing rate control objectives can be

critical in the processing rate of 95% through the sieve is controlled to 91% acceptance 99% of the standard.