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鋼筋混凝土的密度一般是多少？

2016-06-04 11:28:53

來源：齊裝網

25320

　　在建筑裝修中，鋼筋混凝土的身影，也是我們經常會見到的。那么，你知道鋼筋混凝土的密度么？下面就跟著小編來看看，你就知道了。

鋼筋混凝土的密度

鋼筋混凝土效果圖

　　鋼筋混凝土的密度：
　　鋼筋混凝土密度主要指的是混凝土的密度。混凝土的密度需按照一定比例配置。而配置對混凝土所用的水泥也有一定要求。
　　一般來說，C10至C20等級的混凝土其容重在2360-2400kg/m3之間，C25-C35，一般約為2400-2420kg/m3，C35-C40一般為2420-2440kg/m3之間。
　　一般素混凝土密度大約為2200kg/m3。鋼筋混凝土一般設計密度大約為2500kg/m3，各種混凝土約為骨料不同，水泥不同，配置*不同，鋼筋用量不同，密度有所差別。
　　什么是鋼筋混凝土？
　　混凝土是由膠凝材料水泥、砂子、石子和水，及摻和材料、外加劑等按一定的比例拌和而成。凝固后堅硬如石，受壓能力好，但受拉能力差，容易因受拉而斷裂。為了解決這個矛盾，充分發(fā)揮混凝土的受壓能力，常在混凝土受拉區(qū)域內或相應部位加入一定數量的鋼筋，使兩種材料粘結成一個整體，共同承受外力。這種配有鋼筋的混凝土，稱為鋼筋混凝土。
　　什么是鋼筋混凝土結構？

　　鋼筋混凝土結構是指用配有鋼筋增強的混凝土制成的結構。承重的主要構件是用鋼筋混凝土建造的。包括薄殼結構、大模板現澆結構及使用滑模、升板等建造的鋼筋混凝土結構的建筑物。用鋼筋和混凝土制成的一種結構。鋼筋承受拉力，混凝土承受壓力。具有堅固、耐久、防火性能好、比鋼結構節(jié)省鋼材和成本低等優(yōu)點。

鋼筋混凝土的密度

鋼筋混凝土效果圖

　　鋼筋混凝土結構的優(yōu)點：
　　1、可以就地取材，容易建構。
　　2、耐久性特別的好，還耐火。
　　3、可模性很好。堅固性強。
　　4、使用壽命長。
　　鋼筋混凝土結構的缺點：
　　1、重量大，因為是鋼筋和混泥土的結合。
　　2、混泥土抗拉強度低，容易破裂。
　　3、費時，費工。制作周期長。
　　4、施工是受到季節(jié)影響的。冬季不適合。
　　5、補強修復比較困難。
　　好了，以上就是鋼筋混凝土的密度一般是多少的相關介紹了，大家對這些內容是否都記住了呢？若你還想知道更多的裝修資訊，請繼續(xù)關注齊裝網。

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SELECT a.px_abc,a.cid as cid,a.cname,a.uid,a.type,a.bm,a.px,a.px_abc,a.parent_city,a.parent_city1,a.parent_city2,a.parent_city3,a.parent_city4,a.other_city,b.qz_areaid,b.qz_area,b.orders,c.qz_province,c.qz_bigpart,c.qz_bigpart_name,a.lng,a.lat FROM qz_quyu a inner join qz_area as b on a.cid = b.fatherid and b.type = 1 inner join qz_province as c on c.qz_provinceid = a.uid WHERE a.bm = 'www' AND b.type = 1 ORDER BY a.bm,qz_area DESC [ RunTime:0.0011s ]
UPDATE qz_www_article SET `realview`=realview+1 WHERE `id` = 22761 [ RunTime:0.0086s ]
SHOW COLUMNS FROM `qz_thematic_content_related` [ RunTime:0.0015s ]
SELECT b.id,b.`name` FROM qz_thematic_content_related a join qz_thematic_words b on a.thematic_id = b.id and b.is_show = 1 WHERE a.content_id = '22761' AND a.module = 1 AND b.type = 1 AND b.is_delete = 1 LIMIT 5 [ RunTime:0.0010s ]
SHOW COLUMNS FROM `qz_thematic_content_related` [ RunTime:0.0014s ]
SELECT a.content_id FROM qz_thematic_content_related a WHERE a.thematic_id = '55402' AND a.module = 3 ORDER BY a.content_id desc LIMIT 5 [ RunTime:0.0010s ]
SELECT `id`,`title`,`anwsers` FROM qz_ask WHERE `id` IN ('119296','116585','115714','99328','97103') ORDER BY create_time desc [ RunTime:0.0010s ]
SELECT * FROM qz_www_article_class WHERE `shortname` = 'xuancai' AND `obsolete` = 0 LIMIT 1 [ RunTime:0.0010s ]
SELECT * FROM qz_www_article_class WHERE `id` = 88 AND `obsolete` = 0 LIMIT 1 [ RunTime:0.0009s ]
SELECT * FROM qz_www_article_class WHERE `id` = 87 AND `obsolete` = 0 LIMIT 1 [ RunTime:0.0009s ]
SELECT a.*,c.id as cid,c.classname,c.shortname FROM qz_www_article a INNER JOIN qz_www_article_class_rel as b on b.article_id = a.id INNER JOIN qz_www_article_class as c on c.id = b.class_id WHERE a.id = '22761' AND b.class_id = '92' AND a.state = 2 LIMIT 1 [ RunTime:0.0011s ]
SHOW COLUMNS FROM `qz_keyword_relate` [ RunTime:0.0014s ]
SELECT b.name,b.href FROM qz_keyword_relate a INNER JOIN qz_www_article_keywords b on a.keyword_id = b.id WHERE `article_id` = '22761' AND `module` = 'wwwarticle' [ RunTime:0.0012s ]
SHOW COLUMNS FROM `qz_www_article_class` [ RunTime:0.0014s ]
SELECT c.id FROM qz_www_article_class c WHERE c.is_new = 1 AND c.shortname = 'xuancai' [ RunTime:0.0010s ]
SELECT a.id,a.title,c.shortname,c.classname,a.face,a.subtitle,a.likes,a.imgs,a.face,a.pv FROM qz_www_article a force index(idx_state) INNER JOIN qz_www_article_class_rel rel on rel.article_id = a.id INNER JOIN qz_www_article_class c on c.id = rel.class_id WHERE a.state = 2 AND c.id IN ('92') ORDER BY a.id desc LIMIT 0,7 [ RunTime:0.0379s ]
UPDATE qz_www_article SET `pv`=pv+1 WHERE `id` = 22761 [ RunTime:0.0081s ]
SELECT `id`,`name`,`type` FROM qz_thematic_words WHERE `is_delete` = 1 AND `is_show` = 1 AND `type` = 2 ORDER BY id desc LIMIT 30 [ RunTime:0.0304s ]
SELECT `id`,`name`,`type` FROM qz_thematic_words WHERE `is_delete` = 1 AND `is_show` = 1 AND `type` = 2 AND `is_hot` = 1 ORDER BY id desc LIMIT 30 [ RunTime:0.0182s ]
SHOW COLUMNS FROM `qz_thematic_content_related` [ RunTime:0.0016s ]
SELECT b.id,b.`name` FROM qz_thematic_content_related a join qz_thematic_words b on a.thematic_id = b.id and b.is_show = 1 WHERE a.content_id = '22761' AND a.module = 1 AND b.type = 1 AND b.is_delete = 1 LIMIT 5 [ RunTime:0.0010s ]

鋼筋混凝土的密度一般是多少？

鋼筋混凝土的密度一般是多少？