{"id":13024,"date":"2026-07-20T15:44:14","date_gmt":"2026-07-20T12:44:14","guid":{"rendered":"https:\/\/localhost\/wordpress\/?post_type=product&p=13024"},"modified":"2026-09-04T11:07:02","modified_gmt":"2026-09-04T08:07:02","slug":"rock-original-test-hammer-l-type","status":"publish","type":"product","link":"https:\/\/www.liyatest.com.tr\/en\/urun\/rock-original-test-hammer-l-type\/","title":{"rendered":"Rock Original Test Hammer | L Type"},"content":{"rendered":"

[vc_row][vc_column][vc_column_text css=”” woodmart_inline=”no” text_larger=”no”]<\/p>\n

What Is an L Type Rock Test Hammer?<\/h1>\n

The L Type Rock Test Hammer<\/strong> is a portable instrument used to determine the rebound hardness of rock surfaces and core specimens. A spring-loaded mechanism applies a controlled impact to the test surface. The resulting rebound value provides a rapid indication of the relative hardness of the rock.<\/p>\n

The device is suitable for both laboratory and field applications. Its compact design also makes it useful for rock-core classification, geological investigations and preliminary material comparisons. The rebound value should not be considered a direct compressive-strength result unless a suitable rock-specific correlation has been established. ASTM also notes that rebound results are intended primarily for rock-hardness classification and should not automatically be converted into design strength values.<\/p>\n

Low 0.74 Nm Impact Energy<\/h2>\n

The L Type mechanism operates with approximately 0.74 Nm impact energy<\/strong>. This lower energy level is particularly suitable for smaller core specimens, relatively weak rocks and fragile materials.<\/p>\n

Liya recommends the L Type for structures or specimens with a thickness below approximately 100 mm<\/strong>. ASTM D5873 likewise described rebound hammers with impact energies not exceeding about 0.735 Nm<\/strong> for rock applications.<\/p>\n

Rock Core Testing Cradle<\/h2>\n

A dedicated rock-test cradle can be used for cylindrical specimens. The V-shaped metal bed<\/strong> holds core samples with diameters between approximately 21.46 and 54.74 mm<\/strong>.<\/p>\n

The vertical support connected to the cradle helps keep the hammer perpendicular to the test surface. Correct positioning is important because impact direction, surface condition, moisture and rock structure can influence rebound measurements.<\/p>\n

How Is the Rock Hammer Test Performed?<\/h2>\n

First, the operator selects a clean and representative rock surface. Loose particles and surface irregularities should be removed.<\/p>\n

The hammer is positioned perpendicular to the test surface. The plunger is then pressed steadily until the spring mechanism releases the impact. The resulting rebound value is recorded.<\/p>\n

Several readings should be taken rather than relying on a single impact. The results can then be evaluated according to the selected test procedure. Consistent specimen condition and impact direction improve comparability between test series.<\/p>\n

ISRM Schmidt Hammer Method<\/h2>\n

The ISRM revised suggested method describes the Schmidt hammer as an index device for evaluating rock rebound hardness<\/strong> in laboratory and field conditions. It also discusses factors such as hammer type, impact direction, specimen condition, weathering and moisture content.<\/p>\n

ISRM also currently lists a Schmidt Hammer Rebound Hardness<\/strong> resource dated 2024 in its Suggested Methods materials.<\/p>\n

As a result, the L Type Rock Test Hammer<\/strong> provides a simple and portable method for rapid rock-hardness classification and comparative testing.<\/p>\n

[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

STANDART:\u00a0 \u00a0<\/span><\/strong> ASTM D 5873; ISRM<\/em><\/p>\n

\n

LT-R0005<\/strong>\u00a0 \u00a0\u00a0 Rock Original Test Hammer <\/em>| L Tipi<\/em><\/p>\n<\/div>\n","protected":false},"featured_media":11240,"template":"","meta":[],"product_brand":[],"product_cat":[148,145],"product_tag":[],"class_list":["post-13024","product","type-product","status-publish","has-post-thumbnail","product_cat-classification-testing","product_cat-rock-mechanics","first","instock","shipping-taxable","product-type-grouped"],"yoast_head":"\nL Type Rock Test Hammer | 0.74 Nm | L\u0130YA Test<\/title>\n<meta name=\"description\" content=\"L Type Rock Test Hammer measures rebound hardness of rock surfaces and core samples with 0.74 Nm impact energy for laboratory and field testing.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.liyatest.com.tr\/en\/urun\/rock-original-test-hammer-l-type\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta 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