lin91957
Cholerny Spammer
Joined: 22 Jul 2010
Posts: 461
Read: 0 topics
Location: xgnddr
|
Posted: Thu 7:10, 06 Jan 2011 Post subject: p90x workout schedule Rubber dam poor coarse aggre |
|
|
Rubber dam poor coarse aggregate in the flood of new technology design and implementation of port station
Coarse aggregates construction quality control focus. Mainly for sand ratio, measuring ingredients, mixing quality, rolling quality control. Sand rate control in 29% or so. Of sandy gravel, excavation spoil material for screening tests, according to their different rates of gravel sand material, excavated spoil material mixing ratio adjustment, the rate of change in the basic guarantee of sand in the range of about 3%. In the field loader bucket capacity several times compared with the weight coefficients of the experiments, the volume of different materials bucket capacity conversion factor. When the ingredients label on the bucket capacity to control its range. Cement, fly ash and powder bags under the weight. Bags to reduce the loss of demolition to ensure the accuracy of measurement using the measurement of water flow. By setting the standard mixing pit, using methods such as volume conversion, the basic problem to solve on-site measurement. Mixing uniformity test with reference to RCC mixing uniformity testing methods. The scene before and after mixing mortar mixing and washed aggregate bulk density test. Mortar density difference in the 11 ~ 14kg / m between the content of washed aggregate difference of 1% to 3.2%, and that uniformity is good. V value for the quality of primary RCC, RCC thickness, the number of rolling over the control. V value of the construction process, sampling a total of 11 times, its value is 4. 5 ~ 9. 5s, amplitude is uniform. Bulk density testing: the thick pine shop 40cm, compacted thickness of about 30cm, the use of nuclear moisture density gauge punched directly detected. Shop on Pine thickness 60 ~ 70cm, compacted thickness of about 50 ~ 60cm, and 30cm deep digging. Pit leveling, then drilling test using nuclear moisture density gauge. Measured bulk density in the 21.61 ~ 23. 82kN / m. Range. The average bulk density of 22. 54kN / m. 9od average compressive strength of 5.8MPa. 90d average tensile strength of 0. 60MPa. The indicators are to meet the design requirements. 4. Non-stop continuous and rapid construction techniques poor coarse aggregate concrete with less plastic. Low heat of hydration, adiabatic temperature rise of the low, initial setting time, final setting between 1l ~ 40h. These characteristics determine its speed can be achieved non-stop continuous construction. By setting the number of mixing pit, mixing multiple backhoe to achieve continuous mixing feed. Template using precast concrete blocks. Before construction can be prefabricated in sufficient quantities to ensure continuous construction needs. Adiabatic temperature rise at 5 ~ C or so. Can cancel the temperature control measures to ensure the continuous rapid rise in non-stop rolling. In particular climate,[link widoczny dla zalogowanych], in addition to temperature, rainfall during the need to stop the facilities I # 1 -, the remaining time slots (including high-temperature phase) can be continuously rolled construction. Hongkou main cofferdam l1 in January 2006 officially open casting,[link widoczny dla zalogowanych], early April to complete the construction, actual construction time was 50d. The basis of the actual construction of the bottom elevation of 40.0m, the top elevation of the final placement to 75. 5m. Maximum height is 35. 5m, the total filling volume of 32,[link widoczny dla zalogowanych],000 m. Maximum daily increase in height of 1. 2m. The maximum filling capacity at 1200m,[link widoczny dla zalogowanych], basically non-stop continuous rapid construction. V. OPERATION Hongkou cofferdam built from the April 2006 after experiencing a number of flood test. Observations from instruments laid collected data show that the normal working behavior cofferdam. VI Conclusion poor coarse aggregate rubber dam height of the new technology has been in 35. 5m Hung mouth overflow cofferdam upstream hydropower station has been successfully applied in practice proved a combination of roller compacted concrete face rockfill dam and two mainstream the advantages of dam with foundation adaptability,[link widoczny dla zalogowanych], quick construction, safety and environmental protection, investment advantages of the economy, is a very potential of green, environmentally friendly technologies dam. In the future in the medium water conservancy and hydropower dam projects widely used. ■ Editor Wei Feng years (on the next page 54) Fourth, the conclusion by \programs reserved for the removal of favorable conditions cofferdam, construction, demolition combine to enrich the cofferdam design. RCC cofferdam of Three Gorges I52 Demolition of three large scale, high difficulty encountered in the design of the cofferdam directed the dumping of reliable problems, deep water blasting medication calculation problems of technical difficulty in similar projects at home and abroad are rare. these research methods and solutions to other similar projects and promote the use of reference values. ■
More articles related to topics:
moncler jacken Pishihang Irrigation Practice and W
ugg boots günstig Application of goal programming
[link widoczny dla zalogowanych]
The post has been approved 0 times
|
|