{"id":12412,"date":"2019-02-24T23:13:49","date_gmt":"2019-02-24T22:13:49","guid":{"rendered":"http:\/\/www.bancadellacalce.it\/bdc\/?page_id=12412"},"modified":"2023-09-20T09:55:59","modified_gmt":"2023-09-20T07:55:59","slug":"natural-hydraulic-lime-2","status":"publish","type":"page","link":"https:\/\/www.bancadellacalce.it\/bdc\/natural-hydraulic-lime-2\/?lang=en","title":{"rendered":"Natural Hydraulic Lime"},"content":{"rendered":"
[vc_row full_width=”stretch_row_content”][vc_column 0=””][vc_empty_space height=”120″][vc_column_text 0=””]\n

Our Natural Hydraulic Lime is made in Italy
\nburning calcareous marls at low temperature<\/span><\/h1>\n[\/vc_column_text][vc_empty_space height=”30″]
\"Calcequalita<\/div>
\"Calcequalita<\/div><\/div>
\"Calcequalita<\/div><\/div>
\"Intonaco<\/div><\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row full_width=”stretch_row” css=”.vc_custom_1455362636532{background-color: #ffffff !important;}” local_scroll_id=”calcequalitasu”][vc_column width=”1\/2″][vc_column_text 0=””]\n

NATURAL HYDRAULIC LIME<\/h2>\n

The hydraulic limes are obtained from marly limestones or calcareous marls<\/strong> (natural mixtures of limestone and clays) subjected to burning process at temperatures generally between 1100 and 1250\u00b0 C. In such conditions calcium oxide is formed, which subsequently combines in part with the silica and the alumina of the clay, forming hydraulic silicates and calcium aluminates, that is compounds which, reacting chemically with water, form stable and insoluble hydrates. That allow the material to harden and remain stable even under water (hydraulic behaviour).<\/strong> On leaving the kiln, the hydraulic lime is subjected to extinction, such as aerial lime, but, given the presence of hydraulic compounds, the extinguishing water is only the stoichiometrically necessary to transform the calcium oxide, left as quicklime , in calcium hydroxide. If, in fact, even the silicates and the aluminates are hydrated, they would not be able to provide hydraulic characteristics during use.<\/p>\n

According to the EN 459-1:2010 standard, natural hydraulic lime is available in three different types: NHL 2, NHL 3.5 and NHL 5<\/strong>. The acronym NHL is, in fact, synonymous with Natural Hydraulic Lime. The numbers 2, 3.5 and 5 represent the compressive strength expressed in N\/mm2 and are associated with the traditional terms of ‘weakly hydraulic lime’, ‘moderately hydraulic lime’ and ‘eminently hydraulic lime’. The merit of the NHL is that each grade is suitable for different types of use and boundary conditions. This means that it is possible to obtain different mortars, adapting them to the type of use, the required performances and the expected durability. Banca della Calce has selected two types of NHL 3.5 and NHL 5 hydraulic lime produced in Italy in traditional, natural draft, coal-fired kilns.<\/strong><\/p>\n[\/vc_column_text][vc_empty_space height=”10px”][\/vc_column][vc_column width=”1\/2″][vc_column_text 0=””]\n

WHAT LIME? WHAT INTERVENTION?<\/h2>\n

Contrary to what is thought, when choosing a natural hydraulic lime, not always a “stronger” lime is the best solution. The most important thing it’s know what to do and choose the right lime.<\/b><\/p>\n

In the case of historical walls, by way of example, the mechanical resistances are less important than the chemical-physical compatibility. A NHL 3.5 natural hydraulic lime used in a plaster will give the coating characteristics of breathability and help regulate the relative humidity in indoor environments.<\/strong> Moreover, thanks to the low elastic modulus, it will have the ability to absorb the natural settling of the masonry and the effects of thermal expansion, thus ensuring greater durability over time.<\/p>\n

In other cases, of course, mechanical performance will be important. A mortar with a low mechanical strength, will be poorly suited to collect stones and bricks or to make a screed. In these cases, NHL 5 will be the right choice and\u00a0allows you to build, fix, cover, coat and repoint.<\/strong> Finally, it is necessary to consider the environmental conditions and the degree of exposure to atmospheric agents.<\/strong> The mortar must have a hydraulicity index suitable for the quantity of water, or humidity, with which it will normally be in contact over time. Basically, in the preparation of a mortar it is not enough to choose the stronger or weaker lime, instead it is necessary to select the most suitable one.<\/p>\n

Banca della Calce can help you make this choice<\/strong> and support you in the selection and mix design phase of the mortars formulated for your restoration or new construction site, always oriented by conservative principles and green building choices.<\/p>\n[\/vc_column_text][vc_empty_space height=”10px”][\/vc_column][\/vc_row][vc_row css_animation=”bottom-to-top” local_scroll_id=”prodotti”][vc_column 0=””][vc_empty_space height=”10px”][vc_column_text 0=””]\n

CHOOSE YOUR NATURAL HYDRAULIC LIME<\/span><\/h2>\n[\/vc_column_text][vc_empty_space 0=””][\/vc_column][\/vc_row][vc_row match_column_height=”yes” local_scroll_id=”prodotti” min_height=”185″][vc_column width=”1\/2″ css=”.vc_custom_1492164160932{background-image: url(https:\/\/www.bancadellacalce.it\/bdc\/wp-content\/uploads\/2017\/04\/calce-idraulica-naturale.jpg?id=11680) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}”][vc_column_text css_animation=”none” css=”.vc_custom_1554299749901{padding-top: 80px !important;padding-bottom: 80px !important;background-color: rgba(255,255,255,0.2) !important;*background-color: rgb(255,255,255) !important;}”]\n

NATURAL HYDRAULIC LIME NHL 3.5<\/a><\/h2>\n[\/vc_column_text][\/vc_column][vc_column width=”1\/2″ css=”.vc_custom_1492179963083{background-image: url(https:\/\/www.bancadellacalce.it\/bdc\/wp-content\/uploads\/2016\/05\/2013-04-25-11.12.36.jpg?id=9870) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}”][vc_column_text css_animation=”none” css=”.vc_custom_1554299768437{padding-top: 80px !important;padding-bottom: 80px !important;background-color: rgba(255,255,255,0.2) !important;*background-color: rgb(255,255,255) !important;}”]\n

NATURAL HYDRAULIC LIME NHL 5<\/a><\/h2>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row full_width=”stretch_row”][vc_column width=”1\/4″ css=”.vc_custom_1491928506775{margin-top: 80px !important;}”][\/vc_column][vc_column width=”1\/2″][vc_empty_space height=”20px”][vc_btn title=”CONTACT US TO REQUEST YOUR LIME” style=”flat” shape=”square” align=”center” button_block=”true” link=”url:https%3A%2F%2Fwww.bancadellacalce.it%2Fbdc%2Fcontatti%2F%3Flang%3Den|||” el_class=”pulsantegobianco”][vc_empty_space height=”5px”][\/vc_column][vc_column width=”1\/4″][\/vc_column][\/vc_row]\n<\/section>","protected":false},"excerpt":{"rendered":"

Calce qualificata per il restauro architettonico e la bioedilizia.<\/p>\n","protected":false},"author":5,"featured_media":18174,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_joinchat":[],"footnotes":""},"class_list":["post-12412","page","type-page","status-publish","has-post-thumbnail","hentry","entry","has-media"],"yoast_head":"\nNatural Hydraulic Lime - La banca della calce<\/title>\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.bancadellacalce.it\/bdc\/natural-hydraulic-lime-2\/?lang=en\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Natural Hydraulic Lime - La banca della calce\" \/>\n<meta property=\"og:description\" content=\"Calce qualificata per il restauro architettonico e la bioedilizia.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.bancadellacalce.it\/bdc\/natural-hydraulic-lime-2\/?lang=en\" \/>\n<meta property=\"og:site_name\" content=\"La banca della calce\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/La-Banca-della-Calce-223667067649398\/\" \/>\n<meta property=\"article:modified_time\" content=\"2023-09-20T07:55:59+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.bancadellacalce.it\/bdc\/wp-content\/uploads\/2019\/05\/calce-idraulica-naturale-nhl-5-intonaco-banca-della-calce.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1440\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Tempo di lettura stimato\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minuti\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.bancadellacalce.it\\\/bdc\\\/natural-hydraulic-lime-2\\\/?lang=en\",\"url\":\"https:\\\/\\\/www.bancadellacalce.it\\\/bdc\\\/natural-hydraulic-lime-2\\\/?lang=en\",\"name\":\"Natural Hydraulic Lime - 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