{"id":7108,"date":"2025-12-15T14:29:33","date_gmt":"2025-12-15T12:29:33","guid":{"rendered":"https:\/\/forcitexplosives.fi\/?post_type=blogs&p=7108"},"modified":"2026-08-24T10:26:03","modified_gmt":"2026-08-24T07:26:03","slug":"todays-measurement-value-fordyn-vs-kemix-a-in-a-water-filled-borehole-ruutiset-1-2025","status":"publish","type":"blogs","link":"https:\/\/forcitexplosives.fi\/en\/blogs\/todays-measurement-value-fordyn-vs-kemix-a-in-a-water-filled-borehole-ruutiset-1-2025\/","title":{"rendered":"TODAY’S MEASUREMENT VALUE: FORDYN VS. KEMIX A IN A WATER-FILLED BOREHOLE (RUUTISET 1\/2025)"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

It is well established that emulsion explosive cartridges\u2014such as Kemix A\u2014descend more slowly in water-filled boreholes compared to dynamite-based products like Fordyn. The reason is straightforward: Kemix A has a lower density than Fordyn (1.15\u20131.20 kg\/m\u00b3 vs. 1.45\u20131.55 kg\/m\u00b3). To better understand the practical implications of this difference, we conducted a study in collaboration with our product development team.<\/p>\n\n\n\n

We constructed a controlled test setup using a \u00d8110 mm PVC sewer pipe filled with water, a timer, and a simulated detonator lead made from extension wire. This setup served as a \u201cborehole simulator.\u201d We then measured the time it took for \u00d850 mm cartridges of Fordyn and Kemix A to sink to the bottom.<\/p>\n\n\n\n

CARTIRIDGE<\/strong><\/td>SINKING SPEED<\/strong><\/td><\/tr>
FORDYN<\/td>1.34 m\/s<\/td><\/tr>
KEMIX A<\/td>0.96 m\/s<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

As anticipated, Fordyn sank faster than Kemix A. The measurement accuracy is estimated at \u00b15%.<\/p>\n\n\n\n

In practice, in a blast site with 1000 meters of water-filled boreholes, a user charging with Kemix A would spend approximately 5 minutes more on bottom charging compared to a user using Fordyn.<\/p>\n\n\n\n

<\/p>\n\n\n

\r\n
\r\n
\r\n

How do Fordyn and Kemix A behave in water-filled boreholes?<\/h4><\/summary>\r\n
\r\n

Fordyn sinks faster in water-filled boreholes than Kemix A. In the test, the sinking speed of Fordyn was 1.34 m\/s, while the sinking speed of Kemix A was 0.96 m\/s.<\/p>\n <\/div>\r\n <\/details>\r\n

\r\n

How does sinking speed affect charging operations?<\/h4><\/summary>\r\n
\r\n

An explosive with a higher sinking speed can make bottom charging faster. Based on the test, on a blast site with 1,000 metres of water-filled boreholes, using Kemix A could increase charging time by approximately five minutes compared to using Fordyn.<\/p>\n <\/div>\r\n <\/details>\r\n <\/div>\r\n <\/div>\r\n\r\n ","protected":false},"featured_media":7053,"menu_order":0,"template":"","categories":[7],"class_list":["post-7108","blogs","type-blogs","status-publish","has-post-thumbnail","hentry","category-uncategorized-en"],"acf":[],"_links":{"self":[{"href":"https:\/\/forcitexplosives.fi\/en\/wp-json\/wp\/v2\/blogs\/7108","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/forcitexplosives.fi\/en\/wp-json\/wp\/v2\/blogs"}],"about":[{"href":"https:\/\/forcitexplosives.fi\/en\/wp-json\/wp\/v2\/types\/blogs"}],"version-history":[{"count":0,"href":"https:\/\/forcitexplosives.fi\/en\/wp-json\/wp\/v2\/blogs\/7108\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/forcitexplosives.fi\/en\/wp-json\/wp\/v2\/media\/7053"}],"wp:attachment":[{"href":"https:\/\/forcitexplosives.fi\/en\/wp-json\/wp\/v2\/media?parent=7108"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/forcitexplosives.fi\/en\/wp-json\/wp\/v2\/categories?post=7108"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}