混凝土配合比全自動(dòng)計(jì)算書

混凝土配合比計(jì)算表（一）,,,,,,,

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,,,,,,委托編號(hào)：/p>

,,,,,,報(bào)告編號(hào)：/p>

委托單位,巢湖市鴻昌新型建材有限公司,,,水泥品種標(biāo)號(hào)廠家,,P.O42.5,中材

工程名稱,預(yù)拌混凝土,,,粉煤灰品種規(guī)格廠家,,一級(jí)灰,濰南平圩電廠

砼強(qiáng)度等級(jí),C15,,,外加劑品種規(guī)格廠家,,高效減水劑,PCA-I

坍落度,150±30,,,碎石品種規(guī)格廠家,,5-31.5,巢湖散兵

試配日期,2015/3/1,,,砂品種規(guī)格廠家,,中砂,長江

其它性能要求,,,,礦粉品種規(guī)格廠家,,,

"1.試配強(qiáng)度?cu,o確定",,,,標(biāo)準(zhǔn)差σ:計(jì)算值,,,┄┄

"?cu,o=?cu,k+1.645σ=",,21.6,MPa,混凝土強(qiáng)度標(biāo)準(zhǔn)值,≤C20,標(biāo)準(zhǔn)差σ,4.0

2.水泥28天抗壓強(qiáng)度?ce=,,49.3,MPa,,C25-C45,(MPa),5.0

水泥強(qiáng)度等級(jí)值,32.5,42.5,52.5,,C50-C55,,6.0

富余系數(shù),1.12,1.16,1.10,標(biāo)準(zhǔn)差σ取值,,,4

3.按JGJ55表3.0.5選取粉煤灰、礦粉摻量,,,,,βf=,33%,

,,,,,βk=,0%,

4.按JGJ55表5.1.3選取γfγs，計(jì)算膠凝材料28天膠砂抗壓強(qiáng)度,,,,,?b=γfγs?ce=,44.4,MPa

5.按JGJ55表5.1.2選取αa、αb，計(jì)算混凝土水膠比,,,,"W/B=αa?b/(?cu,o+αaαb?b)=",,0.89,

按GB50010規(guī)定和JGJ55規(guī)定校核允許的最大水膠比,,,,,取值:,0.67,

6.按JGJ55表5.2.1-2并考慮外加劑減水率及礦物摻合料性能確定用水量,,,,,мwo=,170,Kg/m3

7.計(jì)算每立方混凝土中膠凝材料用量,,,,мbo=мwo/(W/B)=,,253,Kg/m3

按JGJ55表3.0.4、表7.1.2、表7.2.2-1校核允許的最小膠凝材料用量，C15及其以下混凝土不受限制,,,,,,,符合

8.計(jì)算每立方混凝土中粉煤灰用量,,,,мf=мboβf=,,83,Kg/m3

9.計(jì)算每立方混凝土中礦粉用量,,,,мk=мboβk=,,0,Kg/m3

10.計(jì)算每立方混凝土中水泥用量,,,,мco=мbo-мf-мk=,,170,Kg/m3

11.根據(jù)外加劑廠家推薦及試驗(yàn)確定外加劑摻量,,,,βa=,,1.5%,

11.計(jì)算每立方混凝土中外加劑用量,,,,мao=мboβa=,,3.80,Kg/m3

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混凝土配合比計(jì)算表（二）,,,,,,,

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,,,,,,委托編號(hào)：/p>

,,,,,,報(bào)告編號(hào)：/p>

11.按JGJ55表5.4.2選用砂率,,βs=,45.1%,,,,

12.按重量法計(jì)算砂用量，石子用量,,,,,,,

采用假定容重法，按JGJ55提供每立方米混凝土拌和物的假定容重為2350Kg/m3～2450Kg/m3，,,,,,,,

取混凝土假定容重為,,мcp=,2352,Kg/m3,,,

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мf+мk+мco+мgo+мso+мwo+мao=мcp,,,,,βs=мso/(мso+мgo)*100%,,

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計(jì)算砂每立方用量мso=,,869,Kg/m3,計(jì)算石子每立方用量мgo=,,1056,Kg/m3

13.確定基準(zhǔn)配合比(按JGJ55表6.1.3確定混凝土試拌量L),,,,,,,

"試拌并測定坍落度,當(dāng)需調(diào)整單位用水量、砂率時(shí),計(jì)算出調(diào)整后的基準(zhǔn)配合比并測量表觀密度.",,,,,,,

材料名稱,水泥,粉煤灰,水,砂,石子,外加劑,礦粉

用量Kg/m3,170,83,170,869,1056,3.80,0

14.強(qiáng)度校核：,,,,,,,

"拌和料用量由所需“齡期數(shù)”A（3d,7d,28d,45d,60d),每個(gè)齡期試件組數(shù)B和試模尺寸決定",,,,,,,

1).確定每一編號(hào)齡期數(shù)A=,,2,,2).每個(gè)齡期試件數(shù)B=,,1,

"3).確定試模規(guī)格及其體積Va,Vp",,,,,,,

抗壓試模,1003,1503,2003,抗?jié)B試件,3.80,,

體積Va(L),1.00,3.38,8.00,體積Vp(L),,,

4)拌和量富余系數(shù)K1取1.5,,,,,,,

5).計(jì)算每一編號(hào)拌和料體積M:,,,,,,,

M=K1(3*A*B*Va+6*A*B*Vp)=,,,25,L,,,

"當(dāng)計(jì)算拌合量M小于JGJ55表6.1.3規(guī)定用量時(shí),用表中用量",,,,,,,

6)每編號(hào)各材料用量,,,,,,,

材料,用量Kg,,,,,,

編號(hào),水泥,粉煤灰,水,砂,石子,外加劑（g）,礦粉

1.基準(zhǔn),4.25,2.08,4.25,21.73,26.40,95,0.00

2.+0.05,3.96,1.93,4.25,22.41,26.16,88,0.00

3.-0.05,4.59,2.24,4.25,21.02,26.59,103,0.00

注:+0.05:基準(zhǔn)水膠比+0.05時(shí)配合比；-0.05:基準(zhǔn)水膠比-0.05時(shí)配合比，下同。,,,,,,,

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混凝土配合比計(jì)算表（三）,,,,,,,

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,,,,,,委托編號(hào)：/p>

,,,,,,報(bào)告編號(hào)：/p>

7)砼拌和物性能坍落度表觀密度測定結(jié)果,,,,,,,

配比編號(hào),試驗(yàn)日期,坍落度mm,空筒G(Kg),筒容積V(m3),筒砼G1(Kg),"表觀密度Pc,t（Kg/m3）",

1.基準(zhǔn),2015/3/1,180,0.88,0.005,12.96,2420,

2.+0.05,2015/3/1,180,0.88,0.005,12.92,2410,

3.-0.05,2015/3/1,180,0.88,0.005,12.94,2410,

8)砼強(qiáng)度測試結(jié)果,,,,,,,

齡期d,,（7）d,（28）d,（）d,（）d,,

試件強(qiáng)度代號(hào),,,,,,,

?cu基準(zhǔn)(Mpa),,18.3,19.5,,,,

"?cu,+0.05(Mpa)",,16.5,20.5,,,,

"?cu,-0.05(Mpa)",,18.9,24.0,,,,

"注;(1)?cu基準(zhǔn)-基準(zhǔn)配合比強(qiáng)度;?cu,+0.05:水膠比+0.05的強(qiáng)度;?cu,-0.05:水膠比-0.05的強(qiáng)度;",,,,,,,

(2)當(dāng)配制高強(qiáng)砼時(shí)水膠比±0.02,,,,,,,

15.最終配合比確定：,,,,,,,

(1)確定最終水膠比,,,,,,,

(a)內(nèi)插法計(jì)算,,,,,,,

"(b)直接選用強(qiáng)度相等或稍大于?cu,o的一組配合比的水膠比",,,,,,,

(2)確定表觀密度校正系數(shù)δ,,,,,,,

"(a)由最終水膠比確定的砼配合比計(jì)算砼的計(jì)算表觀密度ρc,c",,,,,,,

"ρc,c=мf+мk+мco+мgo+мso+мwo+мao=",,,2352,Kg/m3,,,

"(b)由10條之(7)表中選強(qiáng)度接近?cu,o的一組實(shí)測表觀密度ρc,t",,,,,,,

計(jì)算砼配合比校正系數(shù)δ,,,,,,,

δ=,"ρc,t",=,1.03,精確至0.01,,,

,"ρc,c",,,,,,

(3)最終砼配合比:,,,,,,,

"(當(dāng)混凝土的表觀密度實(shí)測值與計(jì)算值之差的絕對值超過計(jì)算值的2%時(shí),應(yīng)將每項(xiàng)材料用量乘以δ)",,,,,,,

水膠比:,0.67,砂率:,45.1%,,坍落度:,150±30,mm

材料,水泥,粉煤灰,水,砂,石,外加劑,礦粉

配合比,1.00,0.49,1.00,5.11,6.21,0.022,0.00

每m3砼用量Kg,170,83,170,869,1056,3.80,0

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檢驗(yàn)單位:,,批準(zhǔn):,,審核：,,檢驗(yàn)：,

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