{"id":308,"date":"2014-02-16T13:44:47","date_gmt":"2014-02-16T13:44:47","guid":{"rendered":"http:\/\/procureusa.com\/producers\/?page_id=308"},"modified":"2015-05-26T13:50:19","modified_gmt":"2015-05-26T13:50:19","slug":"faq-2","status":"publish","type":"page","link":"http:\/\/procureusa.com\/producers\/faq-2\/","title":{"rendered":"FAQ"},"content":{"rendered":"
[vc_row row_type=”section” type=”grid” text_align=”left” video_overlay=””][vc_column width=”1\/1″][vc_column_text]\n

Internal Curing<\/span><\/h3>\n[\/vc_column_text][vc_separator type=”transparent” position=”center” up=”6″ down=”6″][vc_accordion style=”accordion”][vc_accordion_tab title=”What is internally cured concrete?”][vc_column_text]Internally-cured concrete is defined as a concrete that utilizes absorptive materials that contain absorbed moisture. The absorbed moisture is released as the internal humidity of concrete drops below 100% to enhance and maximize the hydration of cement. Internal curing is defined as supplying water throughout a freshly placed cementitious mixture using reservoirs that readily release water as needed for hydration or to replace moisture lost through evaporation or self-desiccation.<\/span>[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=”Why is internal curing recommended?”][vc_column_text]\n

Concrete curing technology has been challenged by the advent of modern concrete mixes. This includes high performance concrete (HPC), decorative concrete, pervious concrete, and shotcrete, among others. Both low w\/cm and SCM present new challenges to conventional curing.\u00a0Concrete with a water-cementitious materials ratio (w \/cm )\u00a0below 0.42 does not contain enough batch water to fully\u00a0hydrate all of the cement (Neville 1996).<\/p>\n

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The characteristics of concrete that may be improved by increased hydration from internal absorbed moisture include resistance to early-age cracking, higher strength, decreased permeability, decreased warping, dimensional stability, resistance to freezing and thawing damage, resistance to deicing chemicals, resistance to chemical attacks, and creep.<\/p>\n

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Neville, A. M., Properties of Concrete , 1996, fourth edition, John Wiley & Sons, New York, July, 844 pp.<\/em>[\/vc_column_text][\/vc_accordion_tab][\/vc_accordion][vc_column_text]\n

HydroMax\u00ae<\/span><\/h3>\n[\/vc_column_text][vc_separator type=”transparent” position=”center” up=”6″ down=”6″][vc_accordion style=”accordion”][vc_accordion_tab title=”How does HydroMax\u00ae work?”][vc_column_text]HydroMax\u00ae internal curing admixture provides an internal source of water necessary to replace that consumed by chemical shrinkage during hydration. As the cement hydrates, this water is drawn from the pores in the admixture\u2019s water reservoirs and absorbed into the pores of the cement paste. This process assists traditional curing techniques and can minimize the development of autogenous shrinkage, help in avoiding early-age cracking, and improve strength.\u200b<\/span>[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=”Will HydroMax\u00ae \u201cswell\u201d my mix or create \u201cblobs\u201d?”][vc_column_text]No. HydroMax\u00ae does not “swell” inside a mix. Most concrete mixes contain mix water that is not used for cement hydration. This is evidenced by bleed water from traditional mixes or evaporated moisture from pervious concrete and shotcrete. Have you ever seen condensation under a plastic curing sheet? That is mix water evaporating from the mix before cement hydration can take place.\u00a0<\/span> [vc_separator type=’transparent’ position=’center’ color=” thickness=” up=’6′ down=’6′] HydroMax\u00ae retains the free water that is available in a concrete mix. Typically, this amounts to 1-3 gals of water\/CY. The free water is suspended in the mix instead of bleeding or evaporating. This available water increases cement hydration and paste density contributing to improved durability and chemical resistance.<\/span>[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=”Will HydroMax\u00ae make my pervious concrete feel “spongy“? “][vc_column_text]No. In fact just the opposite.\u00a0HydroMax\u00ae increases the workability and decreases the effort of compaction required for pervious concrete. Pervious concrete that feels “spongy” is typically a result of very low w\/cm mixes with excessive paste or fines. More information on pervious concrete mix design can be found here<\/a>.<\/span>[\/vc_column_text][\/vc_accordion_tab][\/vc_accordion][\/vc_column][\/vc_row][vc_row][vc_column width=”1\/1″][vc_separator type=”transparent” position=”center”][\/vc_column][\/vc_row]\n<\/div>","protected":false},"excerpt":{"rendered":"

[vc_row row_type=”section” type=”grid” text_align=”left” video_overlay=””][vc_column width=”1\/1″][vc_column_text] Internal Curing [\/vc_column_text][vc_separator type=”transparent” position=”center” up=”6″ down=”6″][vc_accordion style=”accordion”][vc_accordion_tab title=”What is internally cured concrete?”][vc_column_text]Internally-cured concrete is defined as a concrete that utilizes absorptive materials that contain absorbed moisture. The absorbed moisture is released as the internal humidity of concrete drops…<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"full_width.php","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"class_list":["post-308","page","type-page","status-publish","hentry"],"jetpack_shortlink":"https:\/\/wp.me\/P5dEI1-4Y","jetpack_sharing_enabled":false,"jetpack_likes_enabled":false,"_links":{"self":[{"href":"http:\/\/procureusa.com\/producers\/wp-json\/wp\/v2\/pages\/308","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/procureusa.com\/producers\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/procureusa.com\/producers\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/procureusa.com\/producers\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/procureusa.com\/producers\/wp-json\/wp\/v2\/comments?post=308"}],"version-history":[{"count":37,"href":"http:\/\/procureusa.com\/producers\/wp-json\/wp\/v2\/pages\/308\/revisions"}],"predecessor-version":[{"id":7396,"href":"http:\/\/procureusa.com\/producers\/wp-json\/wp\/v2\/pages\/308\/revisions\/7396"}],"wp:attachment":[{"href":"http:\/\/procureusa.com\/producers\/wp-json\/wp\/v2\/media?parent=308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}