0086-21-58386256
A polymer grouting method for uplifting a ballastless track of a high-speed rail includes following steps of: (1) drilling grouting holes; (2) manufacturing geo-textile bags and binding the grouting pipes up with the geo-textile bags; (3) tying up the geo-textile bags; (4) displacing the geo-textile bags; (5) grouting two-component expansive polymer materials into the geo-textile bags; (6 ...
To this end, three 1.2-m diameter and 27-m long bored piles were constructed, two of which were excavated under polymer fluids [i.e., (1) Pile P1, and (2) Pile P2] and one under bentonite (Pile B1). The Marsh funnel viscosity of the support fluids, measured prior to use, were 70, 69, and 34 s for Piles P1, P2, and B1 respectively.
The incredible quality. piling polymer available at Alibaba are available in various qualities and are mostly used for making hygienic products such as baby diapers, sanitary pads that need to be very health-friendly. These. piling polymer are equipped with higher pH value, are waterproof, and are breathable products.
P2). The bentonite pile (Pile B1) was concreted at 7.5 h. Figure 2 shows the load-settlement curves of the three piles; both polymer piles behaved similarly and significantly outperformed their bentonite counterpart at the maximum test load of 18 MN – and indeed the pile open for 26 h showed slightly better behaviour than that open to 7.5 h.
The Polymer 80 Frame came with a fixture, as well as the drill bits needed to complete it. A lot of people building firearms are using drill presses or milling machines to "machine" these. After doing some looking I came to the conclusion that it was not really necessary to have that kind of equipment for this project.
bored piling project in Hong Kong. river was diverted so that during construction, the piling rigs operated on a platform built in the original riverbed. The polymer used for this project was SlurryPro CDP® which was supplied in granular form. The polymer mate-rial was mixed with fresh water at a concentration of at
Works are for Aurizon's development of a new Train Support Facility (TSF). This will then service Aurizon's growing Hunter Valley Coal freight business and a...
It is for this reason that polymer fluids have been favoured over bentonite slurry for piling projects in central Glasgow over recent years. Continuous flight auger (CFA) piles were also a possible option, but in the past flighting has occurred in the loose granular deposits resulting, on occasions, in building damage ( Lennon et al., 2006 ...
The two piles constructed using polymer fluids (P1 and P2) showed much stiffer load-settlement response than the pile constructed using bentonite (B1), and the projected long-term pile head settlements are 29.3, 24.0 and 50.5 mm for piles P1, P2 and B1 respectively for the maximum applied load of 18.1 MN ( DVL+ SWL). These results ...
Advantages of Chemtex's PHPA based Drilling Polymer. Strong shear thinning performance, optimum rheological and suspension aggravated ability; Relatively good flocculation ability, significant lubrication and drag reduction, good effect of anti-sloughing in quicksand, water sensitive formation.; Low TDS content, moderate density, strong hold and does not interfere with aquifer /underground ...
In the case of a friction-like polymer pile, a hole of specified diameter is drilled to depth, filled with gravel and injected with our hydro-insensitive resin. As the resin mixture expands, voids between the gravels are filled and a controlled mold pressure is exerted completely binding the gravels with resultant break-points exceeding 1600 psi.
piles were excavated under polymer fluids [i.e., (1) Pile TP1, (2) Pile TP2, and (3) Pile TP2 R] and one was excavated under bentonite (Pile TP4). The polymer used was a PHPA marketed as CDP. To assess the effect of construction time, Pile TP1 was constructed over …
Civil Techno India is a YouTube channel which contains Technical lecture on "Civil Engineer" from personal field experience. This channel is maintained by ci...
4 12.1 The strength coefficient = 550 MPa and strain-hardening exponent = 0.22 for a certain metal. During a forming operation, the final true strain that the metal experiences = 0.85.
A polymer grouting method for uplifting a ballastless track of a high-speed rail includes following steps of: (1) drilling grouting holes; (2) manufacturing geo-textile bags and binding the grouting pipes up with the geo-textile bags; (3) tying up the geo-textile bags; (4) displacing the geo-textile bags; (5) grouting two-component expansive polymer materials into the geo-textile bags; (6 ...