Sentence examples for drill dust from inspiring English sources

The highest PPP and drill dust conductivity was measured at c. 100% saturation, but the area with the strongest gradients differs between the methods.

Pleurotus tuber-regium a fungus that grows on drill dust of the wood Treculia Africana (bread fruit), Elaeis guineensis, or Daniella oliver tree.

The sampling resultants (drill dust and poultice, respectively) were dissolved in deionised water and analysed with a conductivity sensor (WTW Cond 315i; measurement accuracy: 0.5% at 0…35 °C) and by means of Ion Chromatography (Dionex ICS-3000 Reagent-Free Institutitut of Applied Geoscience, Graz University of Technology).

Sealants are field tested on bridges for performance by chloride sampling cores, drill dust samples, water flooding of the treated deck areas to check water leak, core tests to determine the depth of sealant penetration, use dissection/stereo microscopes to determine resin depth and fluorescent, and long-wave UV lighting.

The conductivity values (µs cm−1) shown in Fig. 5 relate to the immersed drill dust from different depth intervals (0 0.5 cm to 1.5 2 cm), obtained from a stone cube soaked in NaCl/Na2SO4 solution of 0.5 mol l−1.

Because of the different mode of sampling the absolute conductivity values are different; the saline solutions obtained by immersion of the poultices reach much higher values (up to 2800 µs cm−1) than those of the drill dust (up to 430 µs cm−1).

And employing reverse circulation down-the-hole air hammer with the current designed drill bit can efficiently protect drilling workers and equipment from threats of drilling dust.

Drilled dust samples extracted after different durations of ponding were tested for the chloride content, which confirmed that the increase in resistance of the ACMs was due to the combined effects of the reduction in the penetration of chlorides and the continuous hydration activity of the ACMs.

Open image in new window Fig. 3 Experimental setup of the drilling dust study.

The analyses are concentrated on the size distributions of the drilling dust in relation to the drilling bite depth.

In the drilling dust, the strongest decrease in ion content is found at the lowest saturation levels.